Rating of gas boilers for heating a private home: the simplest, cheapest and most economical - what to look for when choosing

Which boiler is the most economical?

As you can see, the choice of heating boilers is quite large. In many ways, the purchase of a particular model depends on the user’s preferences and the current situation - you can purchase both gas and electric. The advantages of the first are the efficiency of the boiler, and the second are safety and ease of use. If the main requirement is heating a large area, then you should choose the Vaillant turboFIT VUW 242/5-2 23.7 kW. For users who value ease of installation, ZOTA 12 Lux 12 kW is suitable. And if you value high quality and are not too limited in funds, you can take a closer look at Protherm Skat RAY 9 KE /14 9 kW.

The most economical electric boilers

Electric boilers are also quite popular. They can be a good choice for regions with mild climates. The advantages are compactness, safety and environmental friendliness. But when purchasing, you should make sure that the network will handle the additional load - some weak transformers, which are found in many villages, may simply fail because of this.

1. Protherm Slope RAY 9 KE /14 9 kW single-circuit

Simply an excellent energy-saving boiler, the main advantage of which is its very high efficiency - as much as 99.5%, which very few models can boast of. Many users appreciate its compactness and lightness - the weight is only 24 kg, which makes it possible to install the boiler on the wall. If desired, you can connect external control to make the setup process and timely startup even easier and more comfortable.

The built-in expansion tank is an important part of any heating boiler. The larger it is, the lower the risk that the system will be damaged during frost.

The boiler has protection against overheating and freezing. Automatic diagnostics makes it easy to identify any breakdowns, even the most minor ones. And the built-in pressure gauge, thermometer and power-on indication make working with the boiler as comfortable and easy as possible. Of course, there is an expansion tank - as much as 8 liters. The power is easily adjustable from 3 to 9 kW, so you can adjust the heating system according to the outside temperature. To date, about a quarter of a million of these boilers have been purchased in Russia, which is an excellent indicator.

Advantages:

• highest efficiency;
• high-quality, European assembly;
• compactness.

Flaws:

• quite high price.

EVAN EXPERT 9 single-circuit

Users who need a reliable, simple and easy-to-use heating boiler will certainly not be disappointed with this model. Its maximum power is 9 kW, but if desired, you can set the desired level from nine available. The coolant can have a temperature from 10 to 85 degrees Celsius, so even a very cold building can be heated to a comfortable level in the shortest possible time. Thanks to its efficiency, it will be a good choice for medium and small houses - up to 90 square meters. Many users like that the kit also includes a display and an outdoor temperature sensor - this makes it possible to quickly change the power to avoid serious changes. Automatic diagnostics make it easy to find and fix breakdowns, and the ability to connect a heated floor attracts many users.

The boiler is equipped with outdoor and indoor temperature sensors - for most analogues you have to purchase them separately, spending a lot of money.

Advantages:

• easy to install and maintain;
• nine power levels;
• good functionality.

Flaws:

• Not very good build quality.

3. Vaillant eloBLOCK VE 12 12 kW single-circuit

Experienced users are looking for not only economical, but also truly durable space heating equipment. They will definitely be pleasantly surprised by this model. Its main advantages include its significant service life - it is as much as 10 years! The warranty period also does not disappoint - 900 days. Therefore, the boiler deserves a place in the ranking.

Even compared to other compact electric boilers, this one stands out. It has two power levels - 6 and 12 kW. Therefore, you can choose the most suitable mode for the outside temperature. The boiler is equipped with a circulation pump, which significantly increases the rate of heating of the rooms - within a few minutes after starting the heating, the rooms will become noticeably warmer. Equipped with a 10-liter expansion tank, which eliminates the possibility of damage to the heating system in severe frosts.

Advantages:

• light weight;
• built-in circulation pump;
• significant service life.

Flaws:

• only two power modes.

ZOTA 12 Lux 12 kW single-circuit

Transporting and installing a heating boiler is quite a troublesome job. It is not surprising that many buyers prefer the most compact models, especially if they are also quite powerful. That is why this model is very popular - its weight is only 18 kg. This does not prevent the boiler from having a fairly high power - 12 kW, which is quite enough to heat a house up to 120 square meters. Three power levels make it possible to choose the mode that is best suited for certain conditions, so as not to waste electricity. Electronic control greatly facilitates operation of the boiler and fine tuning. Additionally, operation is simplified by a display and temperature sensors – room and outside.

Among the useful functions is weather-dependent regulation - the boiler independently adjusts to the outside temperature in order to maintain the temperature at the proper level.

Advantages:

• ease;
• high power;
• ease of use;
• affordable price.

Flaws:

• Not all models can boast of high-quality assembly.

Prices: summary table

Gas boilersBoilersWays to save Solid fuel boilers

What is economy?

Many homeowners confuse the concepts of “cost” and “economy.” They buy the most inexpensive solid fuel or gas boiler in the hope of getting maximum comfort for little money. In reality, the opposite happens - the cheaper equipment is purchased, the more guests are forced to pay for heating their home in the future.

The next misconception of consumers is the belief in the very fact of economy. This is a complex concept that depends not only on the technical characteristics and brand of the equipment, but also on the ideas of the residents of the house about a comfortable temperature in the room, the heated area, and the region of residence. The most innovative developments from manufacturers will be of no use if you forget about other factors.

When calculating efficiency, the selected type of fuel, features of the heating circuit design, and the possibility of increasing the price of fuel in the future are also taken into account. It is better to do calculations for 10-15 years than for 3-5. And whatever the result of the calculations, you will still have to spend money on high-quality equipment.

However, you can save money wisely. For example, this can be done by installing a gravity radiator heating system in a private house. Alas, 99% of houses are not connected to the heating mains of cities, and often owners have to choose an alternative heating method. The most commonly used are solid fuel, electric or gas boilers. Below is an overview of their features and advantages.

Rating of gas boilers

So, let's move on to the rating of the best gas boilers for heating a private home. Let's start with the wall ones.

Wall mounted

Which is the best wall-mounted double-circuit gas boiler is a difficult question, because there are a huge number of manufacturers working in this area who have long proven themselves on the positive side. And yet we will try.

See also: Catalog of companies that specialize in autonomous gasification

Bosch Gaz 7000 W MFA

The German manufacturer offers a unique unit that can operate on both natural and liquefied gas. The line also includes single-circuit models. Boiler power is from 24 to 33 kW.

Design features:

• ceramic monothermal heat exchanger;
• stainless steel burner;
• electronic ignition;
• two water heating modes: “eco” – when water is needed as needed, “comfort” – maximum heating;
• you can connect the boiler through a three-way valve;
• automatic system, with which you don’t have to worry about thermal inertia;
• Efficiency – 91%.

Gas boilers from BOSCH Source stroy-podskazka.ru

Baxi Eco Four

This is a representative of Italian production. It can also run on both liquefied and natural gas. The manufacturer produces two power models: 14 and 24 kW.

Design features:

• copper heat exchanger;
• heat exchanger for domestic hot water made of stainless steel;
• The burner is made of the same material;
• there is an automatic system that protects the boiler from freezing and blocking;
• sensor responsible for water movement;
• automatic bypass;
• weather-compensated automation;
• electronic self-diagnosis;
• flame modulation – electronic.

Gas boiler Baxi Source krayinatepla.com

Vaillant turboTEC plus VU INT

This is another German whose power varies in the range of 12-36 kW. These are single-circuit models with a closed fuel combustion chamber.

Design differences:

• copper heat exchanger;
• chromium-nickel steel burner;
• step circulation pump;
• automatic air vent;
• equipment freeze protection system;
• electronic ignition;
• Efficiency is above 91%.

Boiler from the Vaillant company Source kak.znate.ru

Required boiler power

To put it simply, for an average house in the climatic zone of the Moscow region, with a masonry of 2 bricks and a ceiling height of 2.7 m for every 10 m2, 1 kW of heating capacity of heating equipment is required. We also recommend keeping a reserve of 15-20%.

For example, for the house described above with an area of ​​80 m2, the minimum required boiler power is 80/10 * 1.2 (20% reserve) = 9.6 = 10 kW.

These calculations are sufficient in more than 95% of cases. If the house is located in the extreme northern or southern point of the country, has a large glazing area and ceiling height, the required power is calculated individually, taking into account correction factors.

How to accurately calculate the required boiler power Individual calculation, formula and correction factors

Deciding on the type of fuel used

Gas boilers have the lowest ratio of initial purchase and installation costs to operating costs. In addition, they are completely autonomous and can work for weeks without human intervention; they do not require fuel procurement or storage space. Therefore, if there is a gas main near the house, we recommend choosing a gas boiler without hesitation.

If there is no gas line, the most budget-friendly option would be solid fuel models: wood, coal or universal: burning wood, coal, peat, and pellets. One has only to pay attention to the material of the heat exchanger; it is desirable that the steel thickness be 5 mm or more; the service life of such heat exchangers is much longer (from 10 years).

The simplest and most inexpensive design of a solid fuel boiler using the example of the Warmos series of models.

Diesel boilers and waste oil boilers have an initially high cost, and operating costs depend on the price at which waste or diesel fuel can be found. Electric boilers should not be considered as a budget option, since their operating costs, even at night electricity rates, are the highest. For heating a house of 100 sq. m. may require from 8 to 12 thousand rubles/month.

Traditional boilers vs condensing boilers

Each of the two types - condensing and convection devices - uses different technologies for heating. A classic boiler (convection) burns fuel. It subsequently heats the heat exchanger with circulating water. There is quite a lot of energy left that the device cannot use. And it is removed through the chimney. Therefore, the efficiency of such devices does not exceed 90%.

Condensing technology works differently. The design provides for the presence of two chambers. In the first, gas is burned, in the second, the resulting excess energy is condensed on a heat exchanger. Thanks to condensation, the temperature of the heated water that is supplied to the system increases.

On the one hand, condensing models have high efficiency, thereby saving resources and money for the owner. On the other hand, one must take into account the high cost of such equipment.

To withstand chemically active condensate, equipment must be made of durable and high-quality materials. This increases the price of it. In addition, it will be necessary to install additional devices that will neutralize the condensate. After all, it cannot simply be poured into the public sewer.

Condensing boilers work best in combination with heated floors. In this case, the water temperature usually heats up to an average of 35 degrees.

If only radiators are used for heating, a temperature of at least 50 degrees is needed. But the process in this case will not be so effective, because the heated water upon contact with the heat exchanger will not release as much condensate. And the efficiency will not be high enough.

Typical gas consumption for heating

First, let's determine the gas consumption for heating, which is set by manufacturers of the simplest gas equipment.

If you do not take into account frankly unsuccessful models, and also do not take into account manufacturers who produce obsolete equipment, the gas consumption per 1 kW of burner thermal power can be called standard.

As you will see from the table below, it is approximately 0.1 m3 of gas per 1 kW of heat per hour.

Of course, each specific gas heat generator has its own characteristics. But the average numbers are approximately the same.

That is, if you have a house of 130 sq.m. and you are using a 13 kW gas boiler, then in an hour such a heat generator (with continuous operation) will consume approximately 1.3 cubic meters of gas.

This calculation is made without taking into account the efficiency, which varies for different types of gas equipment.

So a standard modern gas boiler with an atmospheric burner has an efficiency of approximately 90 percent. At the same time, old boilers (70-80 years of production) had an efficiency of no more than 80 percent.

As you can see, progress does not stand still. And the efficiency of the simplest boilers is constantly increasing.

However, now there is gas equipment that can come very close to the coveted “one hundred square meters”. Its efficiency is 95-96 percent. We are talking about condensing gas boilers.

What if the boiler consumes too much fuel/energy?

Perhaps the increased consumption is caused by a malfunction in the system, blockages or other factors in the unit itself or in the circuit. In this case, you should not immediately buy a new boiler. To get started, contact Profteplo. We will carry out diagnostics, find the reason for the high fuel consumption of the boiler, find the points of greatest heat loss, etc.

carries out maintenance and repair of boilers of all types in Kaluga and the region. We will help you make the use of your heating system more economical and profitable.