12 best gas condensing boilers

Review of the best according to the editorial board. On the selection criteria. This material is subjective and does not constitute advertising and does not serve as a purchase guide. Before buying, you need to consult with a specialist.

A crucial point in the design of a heating system for a country house is the selection of a gas boiler. Not so long ago, condensation models appeared on the Russian market. They are distinguished by high efficiency and low consumption of natural or liquefied gas. On sale you can find modern equipment from all well-known manufacturers. Find a functional heating device at an affordable price with the advice of the magazine experts.

Selection recommendations

The principle of operation of the condensing boiler. To increase the efficiency of the gas boiler, a phased heating of the liquid in the heating system was invented.

1. First, the heating medium is prepared in a condensation chamber. Thermal energy arises from the condensation of vapors from the combustion products of the gas. In conventional boilers, this heat goes into the chimney.
2. At the second stage, the liquid (water or antifreeze) is heated in the heat exchanger due to the combustion of blue fuel. Due to the preliminary increase in the temperature of the coolant in the condensation chamber, fuel savings reach 20%.
3. Pros and cons of condensing boilers. When purchasing a condensing boiler, the advantages and disadvantages of such equipment should be considered.

Experts consider the main advantages of modern heating devices:

1. high efficiency;
2. low gas consumption;
3. reducing the load on all units and parts of the boiler;
4. the ability to work as convection equipment (in case of network failures).
5. The weaknesses of condensing models include:
6. the need to create certain conditions;
7. utilization of condensate;
8. high price.

Varieties. Condensing gas boilers are of several types.

1. By the number of connected circuits, one- and two-circuit models are distinguished. The former allow you to heat only the heating system, the latter are designed for simultaneous heating of the coolant and the organization of hot water supply.
2. Condensing gas boilers can be installed on the floor or on the wall. Wall mounted equipment looks more compact and lighter, floor structures have maximum power.

Heat exchanger material. In the most aggressive environment, there is such a gas boiler unit as a heat exchanger. Its durability depends on the metal or alloy from which it is made.

1. The traditional material for the manufacture of heat exchangers is cast iron. It is sensitive to temperature extremes; in case of strong fluctuations, the structure may crack. At the same time, cast iron heat exchangers are quite resistant to corrosion, they are distinguished by their durability and reliability.
2. Aluminum heat exchangers are distinguished by their lightness and compact dimensions. The material is susceptible to corrosion, salt deposits form on the walls over time, which must be periodically removed.
3. Copper heat exchangers combine lightness, compact size and good heat transfer. They resist corrosion for a long time, but wear out faster than steel or cast iron structures.
4. Stainless steel heat exchangers are not afraid of corrosion, the inner surface always remains clean due to self-cleaning by condensate. But the cost of boilers with stainless steel heat exchangers will be high.

Equipment. Condensing gas boilers are expensive equipment. Therefore, the desire of potential buyers to save money is understandable. However, one should take into account not only the price of the device, but also its configuration. The purchase of such items as a circulation pump, expansion tank, air vent will lead to serious additional costs.

The editors of the magazine, together with analysts of the rankquality.com service, selected 12 best gas condensing boilers for the review. You can buy these models in specialized stores in the country. When distributing the final positions, the starting point was the opinion of the expert community, and feedback from Russian users was also taken into account.

Rating of the best gas condensing boilers

Nomination	a place	Name of product	price
The best wall-mounted gas boilers of the condensing type	1	Vaillant ecoTEC plus VU INT IV 386 / 5-5 35 kW single-circuit	12 640 RUB
	2	Viessmann Vitodens 100-W B1HC042 26 kW single-circuit	RUB 105,470
	3	Buderus Logamax plus GB172-20 i K 20 kW double-circuit	RUB 103 431
	4	BAXI LUNA Platinum + 1.24 26.1 kW single-circuit	RUB 83 654
	5	Viessmann Vitodens 050-W BPJC 24 kW double-circuit	RUB 76 752
	6	Ariston GENUS PREMIUM EVO 24 FF 22 kW dual-circuit	RUB 63 465
	7	Protherm Lynx condensing 30 MKO 30 kW single-circuit	RUB 66,000
The best floor standing gas boilers of the condensing type	1	Vaillant ecoCOMPACT VSC 306 / 4-5 150 30 kW dual-circuit	RUB 315,900
	2	Viessmann Vitocrossal 300 CU3A038 19 kW single-circuit	RUB 340 100
	3	Fondital Giava KRB 12 11.6 kW double-circuit	RUB 309,690
	4	Buderus Logano plus GB102-16 17 kW single-circuit	RUB 159,890
	5	Vaillant ecoVIT VKK INT 186/5 17.2 kW single-circuit	RUB 158 600

The best wall-mounted gas boilers of the condensing type

When wall mounting a gas boiler, potential buyers should pay attention to two points. The model is selected with a minimum weight, and the wall must be load-bearing. The experts liked the following models.

Vaillant ecoTEC plus VU INT IV 386 / 5-5 35 kW single-circuit

Rating: 4.9

An efficient heating device is the German single-circuit boiler Vaillant ecoTEC plus VU INT IV 386 / 5-5. The thermal power of the apparatus ranges from 6.4 to 35 kW. The device is designed for installation in heating systems, the model is prepared for connecting a storage water heater. Experts highly appreciated the innovative information and analytical system DIASystem. The simulator burner operates in a power range of 20-100%. For combustion, you can use air, both outside and inside the house. The device is equipped with a digital display with backlight and duplicate codes. The heat exchanger of the device is made of stainless steel.

Due to the high price, few homeowners in Russia managed to purchase a German boiler. They are satisfied with the efficiency, reliability, compactness and low noise level.

Advantages

• high thermal power;
• innovativeness;
• profitability;
• quiet work.

disadvantages

• high price.

Viessmann Vitodens 100-W B1HC042 26 kW single-circuit

Rating: 4.8

The Viessmann Vitodens 100-W B1HC042 wall-mounted gas condensing boiler has a high level of comfort. It can be installed in heating systems or in hot water supply lines. The experts liked the compact dimensions of the device, stylish design, low consumption of natural gas. The device is slightly inferior to the leader in thermal power (4.7-26 kW), it is not adapted to work with liquefied gas. In the asset of the boiler, you can add smooth automatic power control, compact size, environmental friendliness. Experts note the ease of maintenance, since all nodes are accessible from the front of the equipment.

Russian users speak flatteringly about the reliability, economy, and convenient operation. The owners consider expensive original spare parts to be a disadvantage.

Advantages

• profitability;
• environmental friendliness;
• good automation;
• compactness.

disadvantages

• expensive service.

Buderus Logamax plus GB172-20 i K 20 kW double-circuit

Rating: 4.8

The well-known manufacturer of gas equipment Buderus has released a new generation of wall-hung boilers Logamax plus GB172-20 i K. Experts have discovered in the model the most modern trends in the world of thermotechnics. The elegant front panel made of tempered Titanium Glas catches the eye. The automatic control system allows you to establish interaction with the boiler via the Internet. The equipment allows you to simultaneously heat the house and provide residents with hot water. Thermal power of the model is limited to 20 kW. Unlike the leaders of the review, the boiler is equipped with an aluminum heat exchanger.

Users are satisfied with the cool appearance of the wall-mounted boiler, low noise level, versatility and convenient operation. The disadvantages include an aluminum heat exchanger.

Advantages

• innovativeness;
• elegant appearance;
• multifunctionality;
• convenient control.

disadvantages

• aluminum heat exchanger.

BAXI LUNA Platinum + 1.24 26.1 kW single-circuit

Rating: 4.7

The single-circuit boiler BAXI LUNA Platinum + 1.24 stands out for its rich configuration. The manufacturer installed all the necessary equipment (pump, air vent, expansion tank) so that the device can be immediately connected to the heating system. Thermal power of the model is in the range of 2.4 … 26.1 kW, for ease of operation there is a display and a remote control. The heat exchanger is made of stainless steel, the capacity of the expansion tank is 8 liters. The experts appreciated the boiler's versatility, both natural and liquefied gas can be used as fuel.

The owners are pleased with the rich boiler package, high-quality assembly, and ease of operation. To save fuel, move the control panel away from the boiler.

Advantages

• good equipment;
• stainless steel heat exchanger;
• versatility;
• convenient control.

disadvantages

• it is better to take the control panel away from the boiler.

Viessmann Vitodens 050-W BPJC 24 kW double-circuit

Rating: 4.7

Compactness and durability are the main advantages of the Viessmann Vitodens 050-W BPJC double-circuit boiler. The model has a maximum thermal power of 24 kW, which is enough to heat a house and provide residents with hot water. The experts praised the manufacturer for its high-quality assembly and a 10-year warranty. The device is equipped with a circulation pump, an expansion tank (8 l), an exhaust fan and a digital display. Automation independently selects the optimal operating mode, minimizing the participation of a modern person.

In the reviews, users praise the model for its compactness, reliability, and low noise level. To minimize the risk of clogging the heat exchanger, you should fill the system with quality water.

Advantages

• compactness;
• 10-year warranty;
• good equipment;
• automatic control.

disadvantages

• sensitivity to water quality.

Ariston GENUS PREMIUM EVO 24 FF 22 kW dual-circuit

Rating: 4.6

The experts refer to the premium segment as the Ariston GENUS PREMIUM EVO 24 FF wall-mounted gas boiler. The double-circuit model produces a thermal power in the range of 2.5 … 22 kW. The manufacturer has equipped the device with an expansion tank (8 l), an air vent, a fan and a circulation pump. The boiler can operate on both natural and liquefied gas. The boiler is equipped with a backlit display, although the device can be easily switched to remote control. The asset of the model should include the low consumption of natural gas (2.33 cubic meters per hour), in this parameter the equipment surpasses its competitors.

Domestic homeowners speak flatteringly about low gas consumption, simple installation, and ease of use. The disadvantages are the high price.

Advantages

• high-quality assembly;
• rich equipment;
• profitability;
• simple installation.

disadvantages

• high price.

Protherm Lynx condensing 30 MKO 30 kW single-circuit

Rating: 4.5

A whole line of condensing gas boilers was produced by the Slovak manufacturer Protherm. The most powerful model in the Lynx series was the device with the designation 30 MKO. Single-circuit equipment is inferior in heat capacity only to the winner of the review (7.1 … 30 kW), while the consumption of natural gas looks quite economical (3.2 cubic meters per hour). The wall-mounted boiler is equipped with a circulation pump and an 8 liter expansion tank. The heat exchanger of the model is made of reliable silumin. Experts note the competent pricing policy of the Slovak manufacturer and good build quality.

The owners are pleased with the simplicity of operation, efficiency and high output of the boiler. Of the minuses, they emit a large volume of condensate (up to 85 liters per day), which must be removed.

Advantages

• low price;
• high power;
• simple control;
• profitability.

disadvantages

• large volume of condensate.

The best floor standing gas boilers of the condensing type

A non-combustible stand is required to install a floor-standing gas boiler. When choosing equipment, you should focus on heat output and functionality. Experts have identified several modern models.

Vaillant ecoCOMPACT VSC 306 / 4-5 150 30 kW dual-circuit

Rating: 4.9

According to experts, the main advantage of the Vaillant ecoCOMPACT series of boilers is its compact size. Thanks to this, the equipment can be installed both in a cramped boiler room and in the attic. The VSC 306 / 4-5 150 model successfully combines modest dimensions with a complete set. A heating boiler and a water heater with a capacity of 150 liters are located in a single building. The thermal power of the model is regulated in the range of 5.8 … 30 kW. The manufacturer equipped its product with a circulation pump, an air vent and an expansion tank with a volume of 12 liters. Both the primary and secondary heat exchanger are made of stainless steel. Considering all these features of the boiler, it is difficult to call it an expensive pleasure.

The model becomes the winner of our review, despite the small number of reviews.

Advantages

• high power;
• compactness;
• rich equipment;
• high-quality assembly.

disadvantages

• not found.

Viessmann Vitocrossal 300 CU3A038 19 kW single-circuit

Rating: 4.8

The most expensive floor-standing gas boiler in our review was the single-circuit Viessmann Vitocrossal 300 CU3A038 unit. The German manufacturer is trying to draw attention to its product with a high rate of conversion of combustion energy into heat (98%). Environmental friendliness, economy and quiet operation will be important properties for the consumer. The self-cleaning function of the heat exchanger simplifies the maintenance of the equipment. Users are offered to save money in the future due to an extended service interval (3 years). Although the model is inferior to the leader in maximum power (19 kW), the coolant temperature can reach 95 ° C.

Perhaps the arguments of our experts will help potential buyers in our country to see all the advantages of the model. But so far there are no real reviews about the boiler on the thematic forums.

Advantages

• high efficiency;
• profitability;
• quiet work;
• self-cleaning of the heat exchanger.

disadvantages

• high price.

Fondital Giava KRB 12 11.6 kW double-circuit

Rating: 4.8

The Italian double-circuit boiler Fondital Giava KRB 12 can boast of a rich set. The model is equipped with a built-in 130 liter boiler, a 10 liter expansion tank, and a circulation pump. The equipment is designed to work with natural and liquefied gas, the maximum thermal power of the device is 11.6 kW. Thanks to the use of condensation technologies, the manufacturer managed to achieve a minimum emission of harmful compounds into the atmosphere and low fuel consumption. The floor standing boiler wins the bronze medal in our review.

The strengths of the unit include multifunctionality, rich equipment, and efficiency. Modest power can be a limiting factor in purchasing.

Advantages

• rich equipment;
• multifunctionality;
• environmental friendliness;
• profitability.

disadvantages

• modest power.

Buderus Logano plus GB102-16 17 kW single-circuit

Rating: 4.7

The Buderus Logano plus GB102-16 gas boiler has the most attractive price against the background of competitors. The single-circuit model is created on the basis of modern condensation technologies, thanks to which the equipment demonstrates a high efficiency of converting fuel combustion into thermal energy. The experts drew attention to the compact dimensions (930×394 mm) and lightness (52 kg) of the equipment. The boiler is controlled by reliable automatic equipment BC20; the heat exchanger is made of a special aluminum alloy. However, such important components as pump, air vent and expansion vessel are not supplied with the boiler. The model stops one step away from the prize pedestal.

Russian homeowners like the affordable price of the boiler, compactness and lightness. They consider a poor package to be a minus.

Advantages

• affordable price;
• compact size;
• ease;
• high efficiency.

disadvantages

• poor equipment.

Vaillant ecoVIT VKK INT 186/5 17.2 kW single-circuit

Rating: 4.6

An excellent option for modernizing old heating systems would be the installation of a high-tech boiler Vaillant ecoVIT VKK INT 186/5. The model attracted the attention of experts with its stylish design and ergonomic construction. Thanks to the high efficiency, the manufacturer has managed to reduce fuel consumption. The thermal power of the device is adjustable in the range of 5 … 17.2 kW, it is possible to connect an external control. Of the useful functions, it should be noted autodiagnostics, protection against frost and overheating, auto ignition, indication of inclusion, display. Gas control is responsible for safety.

Domestic users liked the high-quality manufacturing of the gas boiler, high efficiency, and efficiency. But in addition to the equipment, you will have to buy a circulation pump and an expansion tank.

Advantages

• stylish design;
• low gas consumption;
• high efficiency;
• quality workmanship.

disadvantages

• poor equipment.

---

Attention! This rating is subjective and does not constitute an advertisement and does not serve as a purchase guide. Before buying, you need to consult with a specialist.