I explain how to choose a double-circuit wall-mounted gas boiler for a private home. My team has been installing heating systems for 12 years. We have been servicing gas boilers in the Krasnogvardeisky district of Adygea for more than eight years.
During this time, I have accumulated statistics on boiler service. I warn you that I will express my point of view, my opinion, it may not coincide with the opinion and point of view of some manufacturers.
The gas boilers I am considering belong to the budget segment.
How to choose?
Having decided to purchase a wall-mounted double-circuit gas boiler with a closed combustion chamber, you should focus on the technical characteristics of each model. The main criteria for choosing such a device:
- efficiency. The higher it is, the more efficient and productive the device will be;
- thermal power, which determines how much area and how well the device will heat the house;
- fuel consumption. The more powerful the boiler, the more gas it consumes;
- protective systems that prevent boiler failure during power outages, drops in temperature in the house and other problems.
- price. It is not necessary to consider only expensive models. In most cases, during operation they differ little from their cheaper analogues.
The best known manufacturers and models: characteristics and prices
Now let's look at specific models so that you understand the difference between them. Still, the characteristics differ not only between specific models, but also between different companies. These are the most popular boilers in Russia.
Single-circuit
Let's start with boilers that are designed exclusively for heating.
BAXI ECO Four 1.24
Reliable fourth generation Italian boiler with a closed combustion chamber. The wide LCD display makes it easy to monitor and adjust the temperature. They do this using two modes. The first one is suitable for radiators. You can select a range from 30 to 80 degrees. The second mode involves the use of heated floors. The adjustable range is from 30 to 45 degrees. Safe operation is ensured by the most modern sensors. There is protection against freezing, pump pump blocking and a three-way valve.
Another feature is the modulating burner, which allows you to minimize noise when turned on. The boiler reaches the last 5 degrees of the set temperature at the minimum flame. Gas consumption at an efficiency of 91.2% is 2.78 m³. This model perfectly combines efficiency and European quality. But many owners say that the boiler is afraid of voltage surges, so it is better to install a stabilizer. Otherwise, this is a problem-free, most popular and widespread gas wall system in Russia.
Protherm Panther 25 KTO
The Protherm company produces its equipment in Slovakia and is part of the famous German corporation Vaillant Group. The model has gained quite significant popularity due to its efficiency and reliability: efficiency reaches 92.8%, closed combustion chamber, copper heat exchanger and pipes. Convenient control, high-quality spare parts, protection against freezing, overheating and pump blocking.
If you buy a boiler from the same company, you will get a single compact device. The boiler can be installed directly under the boiler, and all communications can be hidden in a special casing.
The boiler perfectly heats two-story buildings. You don't even have to install an additional pump. The owners themselves say this. Modulating burner and pneumatic gas valve ensure low noise levels. Excellent build quality. But the price is higher than similar models from other manufacturers.
Viessmann Vitopend 100-W A1HB 24 kW
A turbocharged model from a German manufacturer, which is considered the standard of quality. It is distinguished by one of the lowest practical gas consumption indicators in the price segment (although the maximum consumption is not a record low - 2.77 m3/hour). It is also known for its almost silent operation (double noise insulation), modulating burner, and a huge list of safety systems.
Modern automation allows you not only to regulate the temperature, but also to program the operation of the boiler for a week in advance - a rather rare function for this price category. The controls are simple, so don't worry about not understanding the functionality. And if you want to install a backup boiler, then the Viessmann Vitopend 100-W A1HB002 is best suited. After all, it has the ability to cascade connect two boilers. To obtain hot water, you can connect an indirect heating boiler.
Among the shortcomings, one can note only vulnerability to voltage surges (the protective mechanism is designed for 170-253 V, which is not always enough). Please note that today there are three generations of the model: A1HB001, A1HB002 and A1HB003.
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The best German gas boilers The most efficient, reliable and functional models on the market
BAXI Duo-tec Compact 1.24
One of the best representatives of condensing boilers, repeatedly taking first place in authoritative ratings, is considered one of the “smartest” representatives of the budget segment. For example, Think technology allows it not only to adapt to different operating conditions (weather, gas composition, chimney parameters), but also to control different temperature zones.
The maximum gas consumption is only 2.61 m³ per hour, the efficiency is 105.7%. The heat exchanger is made of stainless steel, so it is not afraid of harsh operating conditions. A filter is installed at the cold water inlet. The model is single-circuit, but the three-way valve is already built-in. Despite the fact that the boiler is a condensing boiler, its dimensions are not particularly large. Yes and weight too. According to reviews from owners and installation experience, the boilers have been operating without problems for more than 7 years and are known for their high reliability.
When compared with the condensing boiler market, the model cannot be called the most efficient, but for its extremely budget price it is one of the best offers in terms of technical parameters.
Rinnai BR-UE30
Technological and smart Japanese boiler. A modulating burner with turbocharging, a copper heat exchanger and pipes, the boiler has very compact dimensions characteristic of Japanese models. The maximum gas consumption is only 2.87 m³ per hour, which is very significant for a power of 29 kW. For comparison, European boilers of 24 kW usually have approximately the same consumption. The set includes a remote control that can be hung separately in any convenient place.
It is possible to connect an indirect heating boiler, as well as disinfect it using the Anti-Legionella function. Switching to hot water will occur automatically using a built-in three-way valve. Rubber seals are installed at the joints, an anti-vibration insert is installed on the rear wall, and the front cover is additionally thickened. All this allows you to reduce the noise from the operation of the boiler to a minimum. There are many advantages, but the disadvantages include the high price of the boiler itself and spare parts (the need for which, of course, is rare in practice).
Review of Rinnai gas boilers The closest analogue of standard German quality
Dual-circuit
Most buyers still prefer double-circuit boilers, since they do not need to spend money on an additional water heater.
BAXI ECO-4s 24F
One of the most popular double-circuit boilers on the Russian market. Inexpensive, but very reliable. Closed combustion chamber, primary heat exchanger - copper, efficiency 92.9%. The maximum gas consumption is only 2.73 m³ per hour. The boiler is equipped with protection systems against freezing, overheating and condensation. At the same time, the boiler is well adapted to domestic conditions: unstable gas or water pressure, often not the cleanest coolant, automation and pump tolerate minor voltage drops.
Owners often note changes in temperature, but this is a problem with almost all instantaneous water heaters. To keep the temperature stable, you need good pressure in the water supply. As for unstable voltage in the electrical network, the boiler can withstand small surges. European assembly leaves no doubt about the quality. A filter is installed at the cold water inlet, which can significantly extend the service life of the heat exchanger and circulation pump. Considering the cost of the boiler, there are simply no disadvantages.
BAXI LUNA-3 240 Fi 25
Another, newer model from the Italian manufacturer BAXI. It differs from the previous one in its convenient control panel, which has a built-in programmer. This allows you to set a separate temperature for each day of the week. Capable of operating in underfloor heating mode. The maximum efficiency is 93%, and the gas consumption is quite acceptable - 2.84 m³ per hour. Long service life and efficient operation are ensured by a copper heat exchanger with anti-corrosion coating.
Many users do not understand the difference between the ECO and LUNA series. Everything is simple here. LUNA boilers have higher quality components, which is why they cost several thousand rubles more. It's like comparing a cheap smartphone and Apple. Both the quality and functions are better. For example, the boiler produces up to 14 liters of water per minute, since the secondary heat exchanger is quite voluminous. But LUNA is also a little larger in size. If finances and space allow, I would still recommend choosing this model.
Vaillant turboFIT VUW 242/5-2
German quality, reliability, ease of maintenance and operation - these are the associations that arise in my mind when I hear about the Vaillant company. It seems to me that this is one of the best gas wall-mounted boilers for heating a private home. Firstly, high efficiency, which reaches 93.5%. Secondly, low gas consumption compared to similar models. Only 2.66 m³ per hour. Thirdly, the company has already managed to prove that wall-mounted boilers can operate for 5, 7, 10 or more years without breakdowns. And numerous reviews confirm this.
Separate heat exchangers are installed, so there is no need to worry that the boiler will quickly clog. The main one is made of copper. The secondary heat exchanger, as is customary, is made of steel. A high-quality hydraulic unit, to which the company pays special attention. All pipes are copper, not rubber, connections are threaded, excellent build quality. All necessary protection systems are present. The turbine, servo drive and ignition operate almost silently.
I wouldn’t say that the boiler is budget, but it’s not too expensive either. Of course, when compared with European analogues. The company cares about its customers, so the turboFIT VUW 242/5-2 takes into account the comments of the owners of previous models. Even the price has become lower. Today they are excellent for Russian conditions. The boiler is equipped with a pump from the famous and reliable Grundfos company, as well as Sit automation. The disadvantages include expensive spare parts. Also, do not forget that it is advisable to connect the boiler through a voltage stabilizer.
