Distance from gas stove to hood

Quantity

During the preparation of various dishes, a large amount of steam is released. Drops of fat, mixing with air, settle on furniture, floors, and walls. Why does this happen, because you have a hood above the gas stove, and you turn it on while cooking.

The fact is that the efficiency of the hood is determined by the performance and type of hood. And, of course, the correct distance to the hob is very important. All these factors will be discussed in this article.

Types of kitchen hoods

Hoods are used to forcefully remove combustion products, various impurities (nitrogen oxide, carbon dioxide, various carcinogens) and unpleasant odors that appear in the air during cooking. This system operates on the principle of a vacuum cleaner.

A standard hood consists of the following elements: housing, electric motor, air intake, ventilation system, grease (sometimes carbon) filters.

An island hood is an ideal solution for large kitchens, as well as wide stoves and hobs. In this situation, it is important to take into account the height of the cook

Depending on the method of removing processed air, devices can be either circulating or flow-through . In the first case, the air, after purification and filtration, again enters the room, and in the second, it is discharged outside. Circulating ones are suitable if there is no ventilation in the house.

Not long ago, hoods began to appear that combine these two air handling technologies.

There are several types of hoods based on the installation method. Island ones , they are mounted on the ceiling. Corner ones are fixed in the corner of the kitchen. Such models are suitable for small kitchens.

As for installation, the built-in hood model can be easily hidden in a wall cabinet. Dome ones are mounted on the wall. They perfectly complement the interior, but often come in large sizes.

The built-in hood is suitable for kitchens of any size. It is mounted in a special cabinet. Furniture for this purpose is made to order or existing furniture is remodeled.

Types of hoods

There are four main types of kitchen hoods:

Wall-mounted fume hoods;
Island hoods;
Built-in structures;
Desktop devices.

The first type looks like an umbrella with a pipe, which is mounted on the wall where it is clearly visible. Therefore, its design should suit the interior of the kitchen. Outwardly, it is very similar to a chimney from a fireplace.

Island-type devices are most often attached to the ceiling. They are used if the kitchen interior is designed so that the stove is located in the center of the room. This model operates only in one mode, based on the air exhaust principle.

Built-in appliances are placed inside cabinets. They are hidden from view, so they do not need to be trimmed too carefully. Their technical characteristics are no worse than those of other models, but they cost a little less.

Hood installation height calculations

Tabletop structures are built into the hob itself. They look like another panel section. Due to the fact that this model is located in close proximity to the source of dirty air, the quality of cleaning is usually high.

Factors influencing the distance between the stove and the hood

The hood located above the stove should draw in all the air and steam and not be heated by the burners and pots and pans standing on them. The distance from the slab is determined by calculation and experiment. The main factors influencing the right choice:

unit power;
principle of operation of the hood;
hob type.

The distance between the hood and the gas panel according to GOST is 65–85 centimeters. Above the induction stove, the ventilation equipment can be lowered lower, to a distance of 60–80 cm.

A color scheme

Horizontal appliances, domed and flat, must hang exactly in the center of the stove surface and be at least as wide as the hob.

The width of the lower plane of the air intake is determined by the power of the air-purifying equipment fans. The dimensions of the slab must be taken into account. The vertical deviation from right angles can be within 5–10° to the side of the air intake.

A large ventilation device will interfere with cooking. With lower parameters, there will be no vapor capture on the sides, as a result of which the vapor will partially remain in the room. Or the fans will have to constantly operate at maximum loads. Therefore, the hood should be selected with the required power for the given volume of the kitchen.

Electric stove

The standards for the power of the hood relative to the volume of the kitchen and its minimum distance above the hob are developed with the condition of maximum absorption by the equipment of the ventilation system of the air that rises above the stove during cooking.

At the same time, the air purifying device should not be heated by the burners. If you hang the hood low over the gas stove, the heat from the burners will be added to the heat generated by the ventilation mechanism during operation, so the equipment will quickly overheat and fail.

The design of kitchen hoods also influences the minimum distance. Vertical and inclined ventilation panels are mounted behind the stove; their distance from the upper edge of the stove is reduced to 35 cm, since the lower edge is not located directly above the burners, but is mounted behind the panel at a certain distance.

Bright hues

What does distance affect?

Many homeowners do not think about calculating the correct distance when installing a hood. They don't think it's that important. In practice, a correctly calculated distance allows the hood to easily cope with its task.

If it is placed below the required level, it will lead to many troubles and even problems. At low altitudes, the absorption radius of steam, soot and various emissions decreases. This also makes maintenance difficult - replacing filters, cleaning.

While cooking, a tall person will constantly hit his head on the hood body. And most importantly, at low altitudes, soot and grease that accumulate on the filter and engine blades can ignite.

If you fix the hood too high, its performance will decrease several times. And you will have to use it at high speeds, which will reduce its service life.

The standard height of the hood above a gas stove is 65-85 cm, for electric and induction stoves - 60-80 cm.

The distance to the hood can be adjusted within 10 cm.

The main factors that influence the distance from the stove to the hood are:

kitchen parameters - its height, layout;
type of hob and its dimensions;
hood power and its type;
growth of family members.

It is also necessary to take into account the requirements for air ducts and electrical networks. Only if you comply with all the requirements from the manufacturer and correctly install the hood, the air in the kitchen will be fresh and always clean.

At what distance should the hood be installed?

The sanitary standard and the technical passport for the equipment determine the distance from the gas stove to the hood - at least 65 cm. This is the manufacturer’s standard. The maximum distance from the gas stove to the cabinet with built-in ventilation is 85 cm, but it is a recommendation. It can be increased by installing more powerful equipment, and thereby ensure complete air purification.

Recommended distances

The minimum distance from the hood to the stove with electric burners, without an open flame, is 5 cm less. Filtration method: recirculation or with outlet to ventilation, this does not affect the established norms of the lower horizontal.

Built-in horizontal models are installed at a distance specified for wall-mounted and hanging models, namely: from electric stoves - at least 60 cm, from gas stoves - 65 cm.

Air filter location diagram according to standards

It is necessary to take into account

To correctly calculate the distance from the hob to the air intake, you need to consider:

power;
Type of equipment;
location of the air intake plane – inclined or horizontal;
type of stove;
the height of the hostess.

At what distance to hang a kitchen air filter above the stove depends on the power of the hood. When installing low-power circulation-type models, maintain the minimum permissible distance. They are suitable for kitchens up to 10 m2.

Basic rules and regulations

Fireplace hoods can be hung higher than recommended by standards. Such models are characterized by a large air intake area, high performance and power. They have 4 fans that drive the air flow through the filters and discharge it into the exhaust duct. At the same time, the cleaning of a kitchen of any size and the dining room combined with it is carried out efficiently. Not only above the stove, but also from the entire room, air with soot, grease and steam is discharged into the exhaust system.

Recirculation-type installations filter air masses and return them in purified form back to the kitchen. They are suitable for small rooms where it is difficult to provide air flow from outside. In fact, only mechanical impurities and water remain on the filters. Carbon dioxide comes back. Oxygen levels in the air remain low.

Before choosing an air filter model, you should consider the size of the kitchen. It is also necessary to correctly determine its location. It is important at what distance from the stove the ventilation equipment is installed. The power of the device is determined by the volume of air in the room where it is installed.

Options and standards

Experts recommend purchasing hoods with one fan for small rooms; its operation is sufficient to clean the kitchen 10–12 times per hour.

The location of the bottom horizontal of the device is selected to be minimal for the existing hob.

The volume of a large room requires powerful equipment. The ventilation device in the kitchen is hung at the maximum distance from the stove surface recommended in the technical data sheet of this model.

Standard sizes

For ease of use of the equipment, the installation of a hood in the kitchen is carried out taking into account the height of the housewife. The front edge of the panel should not touch the head when a person leans over food being prepared on the stove. You shouldn’t hang the hood very high above the stove; it’s enough at the level of a raised half-bent arm. While cooking, you can easily switch ventilation modes without distraction.

Ergonomics experts recommend positioning the hood taking into account the height of the person who stands most near the stove. They calculated the most convenient size of the filter device from the floor of the bottom panel at a distance: human height minus 35 cm. The standards established by GOST should not be violated; they are based on the safe operation of the equipment.

Watch a useful video on this topic below.

Types of kitchen hoods

Hood in the kitchen interior

Currently, the domestic market of household appliances offers a wide range of kitchen hoods, which, according to their design, are divided into the following types:

suspended design, which is one of the most convenient to install and practical exhaust devices, suitable for most ordinary users. With all the listed advantages, such a hood, however, is characterized by insufficient productivity;
an exhaust device built into the walls or ceiling that provides the required efficiency in removing odors and fumes from rooms of a large area;
an exhaust device designed in the form of a dome, the effect of which extends not only to the stove, but also to the working surfaces of the countertop located near it;
the so-called “island” hood, mounted in the center of the kitchen space and providing air exchange throughout its entire volume (including above the gas stove).

Calculation of the minimum required exhaust power

Before purchasing a new device for air purification in the kitchen, you should make some measurements and calculations in order to know exactly what power equipment will be able to efficiently purify the air in the kitchen.

Before purchasing a kitchen hood, it is necessary to accurately determine the volume of air in the ventilated room. Then make the calculation yourself. You can contact the seller with these measurements. It will determine the performance of the equipment. The minimum required power is determined by the formula:

Pb = Vk × 12 × 1.3 = (a × b × h) × 12 × 1.3

Where:

Vk = (a × b × h) – kitchen volume;
The air must be completely changed 12 times in 1 hour;
1.3 – actual power coefficient, it takes into account power losses when air passes through ventilation holes, filters and pipeline bends;
Pb – design hood power.

All necessary measurements and power calculations can be made independently. It is enough to determine the length and width of the kitchen, as well as its height, using a tape measure. The numbers are written in meters. Then calculations are made using a simple calculator. By multiplying three numbers, you get the volume in cubic meters (m3). When multiplied by other coefficients, the resulting power is m3/hour.

Scheme and drawing

Model performance does not always match estimates exactly. The nearest higher value should be selected. A less powerful device costs less. But it will constantly work at maximum load, as a result of which it can quickly fail. There is also a possibility that the air will not be completely purified, and then odors will penetrate into the rooms.

Equipment with air exhaust into ventilation usually has high performance. It can be installed above an electric stove above the standard size. As a result of powerful exhaust ventilation, the kitchen and even living rooms will be completely cleaned not only from steam and grease.

Ventilation with exhaust to the outside removes moisture, carbon dioxide, and unpleasant odors from the apartment. The peculiarity of exhaust ventilation is that for its normal implementation it is necessary to ensure access of air from outside into the apartment.

Accounting for distances from the slab according to standards

You cannot install powerful equipment above a gas stove and hang it at a minimum distance from the heating elements. A close hole with a large air flow can blow out the burner flame.

Consequences of an incorrectly chosen location

The accommodation standard was not determined by chance. Any unauthorized change in distance entails unpleasant and even dangerous consequences.

If you hang the hood below the established norm, this is fraught with:

overheating of the device;
ignition of soot, dust, grease deposited on the hood filters;
difficulty in cleaning the device;
blocking the view of the hob.

Due to its low location, the user will often hit it with his head and hit it. The cooking process will become less convenient, especially for tall people.

Consequences of being too high:

decreased efficiency, since a high-mounted device absorbs odors and combustion products worse;
difficulties in servicing the device;
Due to poor absorption of unpleasant odors, the user more often turns on the device at maximum power, which leads to noisy operation of the device and increased energy consumption.

Device installation rules

The hood, which filters the air and returns it back, is easy to install. You can install it above an electric stove yourself.

It is necessary to draw a horizontal line above the hob at the height of equipment installation - the distance between the gas stove and the hood.
A vertical line is drawn on the wall in the center of the slab. The standard provides rules for installing the hood exactly above the hob.
The template from the packaging is applied to the lines, and 4 points are marked - the locations of the mounting bolts. Depending on the model, the distance between them is set as standard 200×200 or 200×100 mm.
Make holes, hammer in dowels and screw in screws.
The design without a filter grille and housing is hung on the wall.
Install the remaining parts of the mechanism.

Spacious kitchen with electric stove

In cases where you purchase a hood with air exhaust into a ventilation pipe or chimney, the structure itself with fans is mounted on the wall in the same way as a model with a circulation method of air purification. Then you need to install the air duct, taking into account the minimum distance from the hood to the gas or electric stove. For normal ventilation, in order to prevent the effect of recirculation, that is, the return of air masses from the ventilation ducts back into the pipe, it is advisable to invite specialists.

Basic requirements for the air duct:

the cross-section of the pipe is designed to allow air masses to pass through it at maximum equipment performance;
the safety factor is taken into the formula for a specific design;
the optimal distance to the outer wall or ventilation duct should be no more than 5 m;
a maximum of 3 bends are allowed in the duct;
pipes of different sections are unsuitable for the exhaust structure;
All turns are made smooth, from radii.

At the stage of planning the placement of equipment in the kitchen, the stove should be placed closer to the outer wall or opposite the ventilation ducts in an apartment building.

Kitchen with gas stove in a country house

The socket must be grounded and located on the side of the edge of the hood body at a distance of 25 cm. The safest option is to install a switch that can quickly turn off the equipment.

Hood configuration

Currently, domestic and foreign manufacturers produce several configurations of kitchen hoods, which have characteristic design features:

Built-in models are often used, installed in kitchen units. This type is very easy to use and affordable, but it has two very noticeable disadvantages - noise during operation and insufficient power.
Dome-type models belong to the category of separately installed kitchen exhaust equipment and most often have a very attractive appearance, reminiscent of a dome. However, their fairly voluminous dimensions make such hoods most popular for installation only in large kitchen spaces.

Hoods also differ in the method of removing contaminated air masses and the cleaning option. The most effective and least expensive are models that remove air pollutants into a common ventilation shaft.

Less convenient and more expensive is equipment that has a recirculation function, in which, through filters, air purification is performed directly inside the kitchen hood itself.

It is also important to remember that hoods differ in the type of placement. Traditional exhaust hoods can be installed horizontally above the hob, allowing for maximum suction efficiency

Models mounted above the stove at a certain angle are equipped with very powerful motors, thanks to which they also show fairly high efficiency.

Before deciding how to install a hood in the kitchen, you need to explore all possible options. This will be discussed in the article.

You can see the diagram for installing a hood in the kitchen in this material.

It should be taken into account that the installation of exhaust ventilation in a kitchen almost always becomes the main reason for disruption of the standard ventilation of a living space. It is for this reason that the issue of choosing such equipment and its installation must be approached very carefully, and if necessary, resort to the help of specialists.

General recommendations for safe installation

But in order for any model of hood to work efficiently and fulfill its functions, it must be installed correctly. This task is best left to professionals.

So, the following factors influence the height of the hood:

standard recommendations;
type of stove or hob;
the presence or absence of ventilation, as well as its power;
device performance;
hood dimensions;
user height.

Since the main task of the device is to purify the air above the hob, when calculating the height you should base it, first of all, on the type and size of the stove itself.

There are stoves: gas, electric, induction and halogen. A special feature of the latter are Hi-Light burners.

To operate effectively, the hood must completely cover the hob area. Thanks to this, all polluted air will be recycled. If the stove is wider, then harmful impurities and unnecessary odors will remain in the kitchen.

For fire safety reasons, standard height parameters between the hood and the burners have been developed.

When compiling them, the type of stove and the design of the lower part of the hood are taken into account. It can be straight or inclined.

For gas stoves, the height from the burners to the straight hood is from 75 to 85 cm, and to the inclined hood – 55-65 cm.

For electric, induction and halogen surfaces, the height from the burners to the direct hood is from 65 to 75 cm, and to the inclined hood – from 35 to 45 cm.

This difference in height is explained by the absence or presence of open fire and the risk of ignition of fat and soot particles on the filters

Often the manufacturer himself prescribes the required height. This is dictated by the characteristics of the materials from which the filters and the device itself are made. The material may be particularly flame resistant and/or have some special features.

You can deviate from the established standards by a maximum of 5-10 centimeters. The distance can only be increased, and reduced only if the power allows and the height of the cook requires it. In any case, before making a final decision, you should consult a specialist.

Professional installation will allow the device to perform its functions better and more efficiently (to extract all excess and purify the air), and will also save energy, since you will not have to turn on the hood at maximum power.

In addition, the height between the hood and the hob is affected by the performance of the hood itself. Sometimes this indicator is called power and is measured in cubic meters. m/hour. Before purchasing a hood, it is worth calculating at least an approximate value.

The quality of air purification directly depends on productivity. Also, if the device has sufficient power, you can adjust the height of the hood above the hob.

It is worth noting that power is also affected by the presence or absence of ventilation and the number of family members who smoke. Additional creases and right angles of the duct can only reduce the performance and increase the noise of the hood

No. 1 - installing a hood over a gas stove

There are many requirements for appliances that are installed above a gas stove. First, you need to accurately measure the distance from the bottom of the device to the hob. As mentioned above, it should be within 75-85 cm.

This distance is slightly greater than when installing the device above an electric model due to the fact that an open flame can ignite the hood filters, especially if they are heavily dirty.

Also, we should not forget that in the case of gas stoves, natural ventilation must work. Therefore, during installation, you cannot completely block the ventilation hole in the kitchen.

To avoid this, you can purchase special grilles for air ducts, divided into two parts: one for connecting the hood, and the other for natural ventilation.

The extraction power is also a very important parameter. Before purchasing a unit, it is necessary to accurately calculate it. A little below will be written about how to do this correctly.

Having carried out the necessary calculations and measurements, it is worth remembering that you cannot buy a device with less power than that obtained in the calculations. Otherwise, it will just be money thrown away; such a device will not cope with the task assigned to it

Do you want to install a hood over a gas stove yourself? In this case, we recommend watching the step-by-step installation instructions.

No. 2 - distance to the electric stove

More lenient requirements are being put forward for electric models. First of all, this concerns the installation height of the hood above the device - it can be reduced slightly, since these models are considered safer to use than gas models.

If the kitchen space is small, then the best option would be to opt for a built-in or flat hood model. In addition to convenience, the prices for such devices are affordable for most citizens.

Another important factor that needs to be taken into account when placing the device above the hob is the dimensions of the stove. So, the width and length of the hood should not be less than the same parameters of the slab. Otherwise, grease and soot will accumulate on the furniture.

The hood above an electric stove can be placed a little lower than above a gas stove, since the former are a little safer to use

Criteria and rules for choosing a hood

When choosing a hood, be sure to pay attention not only to the appearance of the device, but also to such significant characteristics as its size, power, and noise level. The type of control is also important, additional “bonuses” from the manufacturer are added useful functions.

Size

The size of the hood must correspond to the dimensions of the hob and in no case should the device be smaller. The suction plane must cover the entire surface of the plate. Only in this case can the device operate efficiently. If you hang a hood 50 cm above a stove with a width of 60 cm or more, you should not expect a good result. The device will not cope with the removal of odors and grease, and the money will be wasted.

Power

The performance of the hood, its power, depends on the power of the fans built into it. More often, systems are equipped with one or two air exhaust devices. Fans can operate at different speeds. Typically, hoods are equipped with two or four modes. Productivity is determined by the amount of air purified per hour. In different models, this figure varies between 200 -700 m3/h. There are expensive hoods, the power of which reaches 1300 m3/h. According to GOST 26813-99, the capacity of the ventilation unit above the hob should not be less than 200 m3/h.

High power makes it possible to quickly and effectively remove grease and unpleasant odors. In emergency situations - food has burned, milk has run out - this ability will be very useful. But there is no point in forcing the hood to constantly work in this mode. At maximum speed, the device makes a lot of noise, which only gets in the way. Therefore, fans with medium power are quite sufficient for normal cooking or heating of food.

You should also focus on the dimensions of the room. The amount of air that needs to be renewed 10 to 12 times per hour depends on them. To calculate this indicator, you need to calculate the volume of the kitchen, subtract from it the volume of the furniture present and multiply by 10. The resulting value will correspond to the optimal power level of the hood.

Control type

Manufacturers offer a choice of equipment with three control panel options.

Exist:

touch panels – the device is incredibly comfortable to use. Simply touch your finger to the intended area and the device will begin performing the task. The LED indicates that work has started;
panels with slider-type controls - in order to turn on the hood and adjust the power level, you need to move the slider;
panels equipped with buttons - each button is responsible for a particular task.

Additional functions

The functionality of the hood can be expanded. Additional features make it easier to manage the equipment and make it more comfortable for the user. Of course, expanding the “arsenal” of capabilities cannot but affect the final price of the device.

There are several types of additional functions:

Responsible for the convenient use of the device are a remote control, multi-stage power regulators, a touch panel, and a display showing the operating mode. All these features make operating the hood simple and enjoyable.
Additional “bonuses” not involved in air removal - built-in TV, integrated recipe book, computer, Internet access. The built-in timer will allow you not to think about the need to turn off the hood yourself after a certain time. Faber Imago even provides the ability to keep an eye on children in another room using video telephony.
Parts for automating the operation of the device - the presence of sensors that detect the presence of smoke and odors, a programming function - to set a shutdown delay or automatically stop operation after intensive removal of fumes and odors.
Illuminate countertops and stoves with built-in halogen or LED lamps. Access to lighting control makes it possible to use it as a decorative component of the interior.
Continuous operation mode according to a given program - allows you to constantly maintain a comfortable microclimate in the room.

General requirements, rules and standards for installing hoods

There are general rules that should be followed during the installation of any exhaust systems. The main thing is compliance with the manufacturer’s requirements and established standards. The instructions for any model always contain recommendations on the optimal distance to the stove. As a rule, you can vary these parameters within 10 cm depending on the height of the housewife or the characteristics of the furniture design. The standards were developed to prevent fires to maintain fire safety. The width of the hood must match the width of the hob. If the suction surface is smaller than the area of the stove, effective air purification will not occur.

Installation features and height above the gas stove

Of all types of stoves, it is the gas stove that puts forward the most serious requirements for the installation and placement of the hood. It is unacceptable to ignore standard recommendations, since their failure to comply creates a real threat to the lives of both the individual family and the other inhabitants of the building.

Let's start with the fact that using a gas stove implies the presence of an open fire in the room. Any devices and structures placed above them must be removed from the surface at a distance of 75-85 cm.

When installing the air duct, you must remember that it is unacceptable to completely close the ventilation hole. Gas accumulated in the room as a result of an accident or improper handling of the stove must be able to escape freely. If a separate outlet to the ventilation duct is not provided, the existing one should be divided into two parts. This is achieved by installing a special grille divided into two sections. In one part there is a hole for the pipe, the second has standard jumpers.

Installation features and height above electric and induction hobs

The requirements for installing hoods over electric and induction hobs are somewhat milder. This mainly relates to recommendations for placing the device at a certain height above the stove. In this case, it is allowed to install the hood a little lower - at a distance of 65-75 cm.

Installation features and height of inclined hood

Inclined hoods are indispensable in miniature rooms, where the issue of maximizing the preservation of free space is acute. When installing an inclined hood over a gas stove, the requirements are slightly different. The lower edge of the surface should be at a distance of 55-65 cm from the gas oven. You only need to step back 35-45 cm from an induction or electric stove.

Height from the stove to the inclined and horizontal hood

The next step before installing the hood is to determine the distance from the hob at which the hood should be mounted. The meanings differ for different types.

Depending on the operating mode, three types are distinguished:

Flow-through. This is the type we meet most often. The hood sucks in air, passing it through a grease trap. And through the air duct it takes it out into the street. For this type of operation to work effectively, air flow is necessary.
Recirculation. Used in cases where a flow-through system cannot be installed. The hood sucks in air, filters it with a carbon and grease filter, and returns the air back into the room.

It is necessary to change carbon filters every 6-12 months.

Combined. An exhaust hood option that can be changed to create a flow-through or recirculation option.

Manufacturers also introduce hoods that differ in shape. This makes it possible for everyone to choose a device when decorating a kitchen.

You may be interested in the article “How to choose the right linoleum for the kitchen: types, class, wear resistance, installation methods” Go>>

The following forms of hoods are found:

built-in, mounted in a cabinet above the hob and practically invisible;
island, used if the kitchen is large and the stove is in the center;
suspended, mounted strictly above the hob;
retractable, a popular option, takes up little space.

All hoods are distinguished by the location of the dome relative to the hob.

There are two options:

Horizontal.
Inclined.

When determining at what height to hang the hood, you need to take into account all factors: the size, shape and location of the hood dome.

Oblique

Inclined hoods differ significantly from horizontal ones. The tilt makes it easy to clean and replace filters. It also has a lower risk of fire.

The fans are located in the upper part of the housing, so the inclined hood can be mounted lower than the straight type.

Inclined hood1

Inclined hood2

Inclined hood3

Inclined hood4

For installation, manufacturers recommend focusing on the following distances between the stove and the hood:

the height of the hood above the gas stove is 60cm;
The height of the hood above electric and induction hobs can be reduced to 50 cm.

When choosing an inclined type hood, it is very important to decide in advance on the layout of the kitchen wall. So that there are no problems when installing the exhaust device.

Horizontal

Horizontal hoods are often used to provide ventilation in the kitchen. When choosing this type, it is necessary to take into account not only the power of the device, but also the height of the people living in the house.

If installation at a high altitude is necessary, the height of the ceilings must be taken into account. Is there enough height to connect the hood to the ventilation duct?

Horizontal hood_1

Horizontal hood_2

Horizontal hood_3

Horizontal hood_4

Manufacturers recommend for installation to be guided by the following values from the surface of the slab:

the distance between the gas stove and the hood is 80 cm;
for electric and induction cookers, the distance can be reduced to 50 cm:

These are the recommended installation distance values; they can be slightly adjusted so as not to experience inconvenience during its use and maintenance.

The same requirements apply to the installation of island hood types. It is necessary to calculate in advance the distance from the hood to the hob so that there are no difficulties during installation.

Island hood_1

Island hood_2

Island hood_3

Island hood_4

Requirements for air ducts and electrical networks

Parameters such as air ducts and electrical networks directly affect the performance of exhaust devices. That is why it is necessary to take a responsible approach to the design of ventilation ducts and electrical networks.

It should be immediately noted that for recirculation type hoods there is no need to lay ventilation pipes. They absorb air and simply filter it, after which they return it back to the room. That is why this chapter will consider the flow-through type of exhaust equipment.

If you do not plan the air exhaust system correctly, a person may get a number of the following problems:

Changes in pressure in the channels;
Load on the hood motor;
Poor air permeability;
Large air flow from the street.

To avoid this, it is best to use the help of professionals who will install ventilation ducts according to GOST standards. Only in this case will the hood be able to reveal its full potential and not cause problems during long-term use.

Also, attention must be paid to electrical networks. The position of the socket must correspond to the length of the factory hood cable. Under no circumstances is it recommended to extend the equipment wire yourself; this can lead to cable oxidation and overloading the hood.

The socket is also installed in accordance with GOST standards. It is best to plan the wiring and power points in advance after the hood has already been purchased. Of course, you can always use an extension cord.

Where to put the socket

So, in order to correctly design and install ventilation ducts, it is necessary to adhere to the basic opinions of experts, which will help increase the performance of the hood and reduce the pressure on the device’s motor.

The first thing to avoid when laying communications is excessive bends. First of all, they force the exhaust air to create additional pressure in order to deliver the exhaust air outside the house. Hence the conclusion: the fewer knees, the less force the device will need to expend to perform its basic functions. Also, the pipes must be sealed. Under no circumstances should holes be allowed in them, which could lead to a loss of pressure and, accordingly, to overload of the hood motor.

It is important to make the distance from the hood to the street as short as possible so that the exhaust device spends less energy working with a large volume of air. Also, narrowing and expansion should be avoided - the pipe must be of the same cross-section throughout its entire length, which will allow maintaining constant pressure for normal operation of the fans.

It is also recommended to install ventilation communications strictly at level. There is no need to make the air rise at an angle through the pipe; it is better to maintain a strict horizontal line and use a 90-degree elbow to move to the vertical level.

The diameter of the ventilation pipes must match the hood connector. It is best to use pipes made of environmentally friendly plastic or galvanized, they will last longer, and the cost will not hit the budget too much.

It is important to note that the installation of ventilation ducts should be carried out by a specialist who has extensive experience working with hoods and knows the basic subtleties that can improve or, conversely, worsen the performance of the exhaust device.

Distance for ventilation ducts

According to GOST standards, the outlet for the exhaust device is installed at a height of 2.5 meters from the floor level. This is the optimal indicator that specialists will use during the installation of electrical communications.

Also, it is necessary to step back 15-20 centimeters to the left or right from the hood so that the equipment body does not block the access point to the electrical network. Some hoods are connected directly to the network using terminal blocks or plugs, so installing an outlet is not always necessary.

It is very important to provide grounding for the outlet. Grounding prevents the device from burning out due to voltage surges or other unpleasant situations. Considering that some hoods cost a lot of money, it is best to take every precaution and know that the equipment will not be damaged.

If the wiring and sockets are old and the hood is already installed, you can use an extension cord. However, it is recommended to purchase an extension cord with a fuse (a device that will disconnect the carrier from the mains in the event of power surges or other situations).

Installation of air ducts and power supply connections

Hood with corrugated air duct
When installing the air duct, we advise you to pay attention to the following important details:

outlet channels for a wall-mounted kitchen hood are made up of relatively short and straight sections with a minimum number of bends, the radius of which should be chosen as large as possible;
when using corrugated hoses as a discharge channel, their bending angle should not be less than 90 degrees;
It is also not recommended to narrow the outlet section of the air duct, which can lead to increased noise;
The hatch of the ventilation shaft to which the air duct is connected must be completely cleaned of all contaminants accumulated during its operation.

The operation of the exhaust mechanism requires an electrical network, the supply of which must be provided in advance. As a rule, products of this class are equipped with a cord with a plug, for connecting which a specially equipped socket with a grounding contact must be used.

Important! To avoid heating, such an outlet should not be located above the area where the hood is located.

Self-installation

A hood is not the most complicated device, so if you have a little experience and a set of necessary tools, it is quite possible to install it yourself. Self-installation is a great opportunity to save on the services of specialists.

Installation of a hood attached to the bottom of the cabinet

Hanging models are attached directly to the bottom shelf of the cabinet. Installation is simple, installation is carried out using self-tapping screws and a screwdriver. Since connecting the air duct to the recirculating device is not required, the installation ends by connecting it to the electrical network.

Installation of a hood in a wall cabinet

Installing a hood into a cabinet yourself requires certain carpentry skills. For a new set, the device is purchased at the furniture design stage. In order for it to fit into an already used hanging cabinet, it is necessary that the dimensions of the hood correspond to the internal dimensions of the case.

To work you will need:

jigsaw, you can also use a manual one;
hacksaw for wood;
pencil;
screwdriver (preferably a screwdriver);
awl;
construction angle, tape measure;
clamps.

Installation steps:

First of all, you need to free the cabinets from the facades, and not only the specific cabinet for the hood, but also the adjacent drawers. Next, remove the cabinet and fasten the adjacent cases together with clamps. Do not skip this point - the boxes may fall and be damaged.
We unscrew the bottom shelf and apply it to the upper plane of the exhaust device. We outline the outline of the air duct and the holes for the outlet of the wire with a plug to connect the device to the network. Cut out the marked holes.
We insert the hood into the housing and mark the upper boundaries of the device. We fasten the bottom shelf along the marked lines. We drill 4 holes in it.

You can ensure exact alignment of the fastening points with the holes using a stencil.

We fix the hood inside the cabinet and install the air duct. We use it to connect the ventilation hole and the system. We install shelves and fronts. It is worth checking the functionality of the equipment before installing the facades.

Installation of a hood with an air duct

The installation procedure for such a hood includes:

fixing the hood;
development of air duct and electrical wiring diagrams;
box fitting;
installation of the box using sealant.

The air duct is assembled from a plastic box or made of aluminum corrugation. The first option is stronger, more aesthetically pleasing and more reliable. Therefore, it is worth giving preference to it. Plastic is easy to saw and joined with special elements. Additional strength is added to the joints using sealant. Corrugation also has its advantages - its flexibility allows you to lay the air duct along a curved path.

The main rules for installing ventilation in the kitchen of a private house

Taking into account existing requirements, a hole that facilitates the influx of air masses should be placed on the external wall of the dwelling, at a height of about 2 meters from the foundation. In turn, taking into account all the standards, the hole for removing air from the kitchen area is located on the roof. But in this case, one should take into account the fact that the chimney pipe, where all ventilation channels are connected, must be at a height of more than 50 centimeters above the roof.

Taking into account the fact that the kitchen room in the house is one of the main rooms where high-quality ventilation is required, it is simply necessary to install a built-in ventilation duct in it, into which the outgoing air flow will penetrate through the existing vent.

If the ventilation for the kitchen was correctly planned and installed, then the main part of the air will move from the rooms of the house to the kitchen, and from there, along with the odors present there and the gases released, it will go outside. That is why more attention needs to be paid to the quality of ventilation ducts.

Taking into account existing standards, to install high-quality ventilation using special tables, it is necessary to calculate the area of the rectangular cross-section of the channels, as a result of which the waste accumulated in the air masses would be fully discharged to the street. After completing the calculations, it is necessary to install the above channels inside the walls.

This ventilation device is made of stainless steel and has a smooth surface, this is necessary to prevent various contaminants from settling on the surface of the channels. The openings for the entry and exit of air masses are closed with special grilles to prevent the penetration of various foreign elements and dirt into them. In winter, the channel should be heated; to do this, it will be enough to install any heating equipment next to it.

Tips for use

Keep the device clean and wipe it free of dust and grease after each use.
Do not turn off the device immediately after cooking, as steam particles can spread throughout the kitchen faster than the device can absorb them. Therefore, you need to leave the hood running for a few more minutes so that it draws in all the fumes.
Replace carbon filters regularly - at least 2 times a year.

Preparatory work for installing a kitchen hood through the wall

Connecting the hood to an outlet through the wall is an option for private houses or apartments where ventilation is not provided for by the design or is in poor condition. In such cases, for the normal functioning of the exhaust unit, the outlet is made directly to the street, punching a through hole in the wall, providing a channel of minimum length. For the air duct, it is recommended to choose a round pipe.

To prevent the external channel from freezing and leaking, a check valve is installed in the hole inside the wall.

At the preparation stage, the exact installation location of the unit is determined and materials are purchased: a galvanized pipe with a canopy for arranging external ventilation, a corrugated aluminum pipe for the air duct, clamps and a check valve. You will also need hardware.

When preparing the room:

remove kitchen utensils, textiles and decorative items;
cover furniture and equipment;
cover the floor in the installation area with thick fabric;
clear the wall where the unit will be installed.

Equipment location and dimensions

The location for installing the air purifier is selected taking into account the location of the exhaust unit and the area of the kitchen.

According to the location of installation, exhaust units are divided into:

Island - above the stove located in the center of the room.
Wall-mounted. The dome is attached to the wall on one side, and the opposite side is located above the slab.
Corner ones are installed above the hob in the corner of the room.

The shape of the hoods is flat, inclined and dome. The size of the suction surface should not be smaller than the area of the hob, otherwise the hood will be ineffective.

According to the rules of SNiP, the socket for powering the hood is installed above the wall cabinet, inside it or in the casing of the device at a height of 1900-2200 mm from the floor.

Selection of materials for the exhaust duct

When choosing a check valve and an outer pipe for the air duct, they are guided by the thickness of the wall and the material from which it is built. The best option is a galvanized round pipe with a canopy. Any moisture-resistant material is suitable as insulation for such a pipe. Most often, penofol with a thickness of 100 mm is used.

The check valve for the hood is made of:

PVC;
polypropylene;
polyurethane;
vinylurethane;
plastic;
polyethylene.

The most durable valves are made of polyethylene and reinforced vinyl urethane. The latter is almost impossible to damage.

Creating and preparing a ventilation hole in the wall

The hole for the air duct in the wall should be located at a distance of 200-300 mm from the ceiling on the outer wall as close as possible to the slab. Ideally, directly above the hob.

Before starting work, empty the kitchen of decorative items, utensils, small accessories, and cover furniture and appliances with film or cloth. The location of the hole is measured on the wall and markings are made for the air duct.

A through hole in the wall and installation of a ventilation duct are done in several stages:

Drill a hole in the wall to install the frame.
Hammer a dowel into the hole and screw in a pin to secure the frame.
Attach the frame to the wall and install the hammer drill.
Install a coolant drain for the crown made of foil or tin cans.
The drill bit of the hammer drill goes through the finishing layer inside the room.
The crown is freed from the building material and the inside of the wall is passed.
The front part of the wall is drilled out, after which the frame with the tool is dismantled.
Prepare the hole for installation of the ventilation duct, freeing it from debris and dust.

Next, a system of check valves is assembled, which will prevent dust and debris from entering the channel and will not let cold air from the street into the room. After installing the valves, the hood body is attached.

Power calculation

The formula helps to calculate the power of kitchen hoods: L x B x H x 10 (or 12) = productivity in m3/h. Where:

L is the length of the room;
B – width;
H – height;
10 or 12 – coefficient.

An example of how to calculate the hood power: L x B x H x 10 = 4.5 x 3 x 2.7 x 10 = 364.5 m3/h. This means that it will be able to process 364.5 m3 of air in one hour.

But it should be borne in mind that coefficients 10 and 12 help in finding maximum performance, and there is no power reserve left. In emergency situations, the power of the unit may not be enough. Also, calculation coefficients may vary depending on which slab you are going to use:

for gas stoves this figure can increase to 20 (due to the increased flow of gas combustion products, in comparison with an electric hob, over which fumes appear only from the food being cooked);
over an electric stove – up to 15.

This means that for a kitchen with a gas stove, the power value will be: L x B x H x 10 = 4.5 x 3 x 2.7 x 15 = 546.75 m3/h. It is recommended to make a small power reserve in excess of the calculated one when operating fans at maximum load.

The examples of how to calculate a hood given above are suitable for a closed room if it has a closing door.

When there is no door and an arch is installed, or the room is adjacent to the living room (dining room), then amendments must be made to the calculated data taking into account these features. To quickly calculate power, you can use the table.

Basic mistakes when installing a hood

Even experienced home craftsmen who repeatedly carry out various repairs in their apartment/house can make mistakes when installing a hood over a gas stove. And even more so for those who are new to this business.

For gas stoves, the recommended height for hoods differs from electric ones. This should be remembered before starting installation work.

The most common mistake is choosing the wrong height for mounting the device. Thus, often the person responsible for the installation considers it unnecessary to waste his time reading the instructions and simply relies on the opinion of a neighbor/comrade who is authoritative in his eyes, who claims that 60-70 cm is enough.

This situation can especially often occur in kitchens where no one cooks. After all, you don’t need a hood to brew coffee and heat pizza. Therefore, the hood in this kitchen will play a decorative role for the time being. As soon as a housewife appears there, inspiredly sculpting culinary delights, she will have to buy a new one or reinstall a low-hanging hood.

The second installation mistake is insufficient width of the equipment. It should be remembered that for normal operation the width of the hood must be the same as that of the stove.

Experts recommend planning to purchase a hood only after purchasing a gas stove. This way you can choose the model that is optimal in width and height.

The third error is more related to design - it will not affect the functioning of the equipment. We are talking about hoods with air ducts connecting the device to the ventilation shaft - in open areas it is advisable to install a plastic one. This will visually give a more sophisticated appearance to communications.

For air ducts that are hidden under a decorative casing, in a plasterboard box or in a suspended ceiling, you can use corrugation. This option is also acceptable for hood models that are mounted in a wall cabinet. The air duct will hide perfectly in the same cabinet - you just have to cut the appropriate hole for it.

How to connect a kitchen hood without an air duct is described in detail in our article.

The air duct made of metallized corrugation hides perfectly in the closet. If masking is not possible, it is better to choose a neat plastic pipe

Another mistake is made by beginners when working with a hood with decorative glass. When installing it above a gas stove, you must be extremely careful not to accidentally damage the decorative casing. Under no circumstances should you lift the equipment while holding onto the glass.

The fifth mistake is incorrect connection to the electrical network. This situation is fraught with not the most pleasant consequences if the current flows through the hood body. Basically, this problem occurs when the wires of the device are directly connected to the power cable by a novice home DIYer.

If the hood will be plugged into an outlet, then it is important that the electrical point be removed from the gas stove at a distance of 60 cm. Compliance with the rules and safety regulations will protect against accidental fire of the wiring.

The neat white plastic of the ventilation duct does not catch the eye in the kitchen. If desired, you can choose a color to match the wall decoration or paint the pipe in the desired shade

All mistakes can be avoided if you take each stage of installation work responsibly. Correct installation and connection of a hood over a gas stove brings you closer to an excellent result with every step. High-quality installed equipment will please any housewife and will last much longer than its service life.

Electrical connection

According to the rules, sockets for hoods are located above wall cabinets, at a distance of 5 cm from the top cover. Along with this, it is necessary to take into account where the corrugated pipe will be laid to the ventilation shaft. Access to the outlet should be free, and the corrugation should not interfere.

If the equipment is built into a cabinet, then the socket can be located there too. It is recommended to lay the wiring above the cabinets, hiding it in a plastic casing. You can learn more about all the nuances from the article on connecting a hood.

So, choosing the right ventilation installation height is very important to create a microclimate in the kitchen. If the device is hung too high, cleaning will be insufficient; if it is positioned too low, a fire may occur.