Comparison of gas boilers of three European brands

Protherm Cheetah 23 MTV

Specifications:

• type – double-circuit;
• the boiler has a closed combustion chamber;
• expansion tank with a volume of 5 l;
• produces hot water in the range from 1.5 to 11 l/min;
• power consumption 10.7 - 25 kW;
• useful power from 8.5 to 11 kW;
• the water temperature can be adjusted from 38 to 60 °C;
• has dimensions (H/W/D) 740/410/315mm;
• weighs 34 kg;
• equipped with a steel plate heat exchanger;
• operating pressure can vary from 1 to 10 atm;
• gas consumption: natural – 2.73 m³/hour, liquefied – 1.9 kg/hour;
• The efficiency is 93.2%.

Model description

The boiler is available in a wall-mounted version and is equipped with a liquid crystal display, with the help of which constant control over the operating process is carried out. The product is equipped with special devices that ensure safe operation.

This includes a safety valve, draft sensors, flame control, and water flow sensors. The device has built-in functions of frost protection, anti-blocking three-way valve, pump jam protection, and thermal fuse.

This model has a coaxial system that allows the boiler to operate without being connected to the central chimney. Also, no special ventilation device is required. The pipe of this system can be led outside through an external wall. With this connection scheme, combustion products do not enter the room, and air is taken not from the house, but from the street.

Boilers of this model have a function for monitoring the condition and auto-diagnosis of faults.

Advantages and disadvantages

The heating device heats up instantly, operates almost silently, 3 heating modes (winter-summer-vacation). Apart from the fairly high price of the device, no other shortcomings were identified.

Installation and instructions

Boilers of this model must be installed in a closed system with forced coolant. Please note that:

• devices must be installed on site only by a representative;
• connection and initial settings are also carried out by a certified specialist;
• You cannot change anything inside the device or erase the inscriptions on the case;
• If any problems arise, you should immediately contact the service center, and not repair them yourself;
• more complete operating instructions for the device and warranty statements should be included in the delivered kit.

Price for the heating device "Cheetah"

The cost of gas boilers of this model varies from 30,500 to 32,200 rubles without delivery. You can purchase them, as well as invite specialists for installation and configuration, in stores that sell boilers from this company.

What types of Buderus boilers are there?

Condensation

Condensing-type devices once became an innovation in the field of heating technology. They have much greater efficiency than traditional heaters. This occurs due to the use of energy, which in conventional designs simply flies out into the chimney - along with the combustion products. The operating principle of condensation modifications is based on the use of energy losses to heat the coolant. Thanks to the energy of the burned gases, it is possible to reduce fuel consumption. At the same time, the release of harmful substances into the environment is reduced. This is the most economical and energy efficient option.

Wall mounted

Wall-mounted versions are especially widely used for autonomous heating of apartments. Being small in size, wall-mounted boilers are in no way inferior to their floor-standing counterparts in thermal performance and functionality. May have one or two circuits. Their power is usually small - in the range of 7.8-28 kW. But there are also more powerful devices - for large houses and cottages. All wall-mounted versions are equipped with a circulation pump, expansion tank, pressure gauge, thermometer, automatic control system, efficient heat exchanger, burner and other elements necessary for a gas heating device. The main advantages are compactness and lower cost compared to floor-standing versions.

Floor-standing

Floor-standing versions can have atmospheric or forced-air burners. The heat exchanger is usually cast iron. Less often - steel. There are universal modifications - they can use any fuel (gas, pellets, fuel oil, diesel fuel, rapeseed oil). Plus - independence from one type of fuel.

The power of floor-standing devices is greater than that of wall-mounted analogues - 52,000-95,000 W. Thanks to noise-absorbing devices, there is practically no noise. More advantages:

• Smooth adjustment of water temperature.
• You can install additional devices to increase functionality.
• You can connect a water heating tank up to 200 l.
• They continue to operate if the gas pressure drops to 10 mbar.
• Intuitive controls.
• Reconfiguring burners for an alternative type of fuel.

Protherm Cheetah 23 MOV

Specifications:

• double-circuit boiler;
• it has an open combustion chamber;
• the volume of the expansion tank is 5 l;
• hot water dispensing capacity is 1.5–11 l/min;
• consumes power in the range from 10.4 to 25.8 kW;
• useful power is 9–23.3 kW;
• hot water temperature is adjustable from 38 to 60 °C;
• overall dimensions (H/W/D) – 742/410/311 mm;
• weight is 31 kg;
• heat exchanger – plate made of stainless steel;
• operates under pressure of 1–10 atm;
• liquefied gas consumption is 1.9 kg/h, and natural gas consumption is 2.73 m³/h;
• productivity is 90.3%.

Model description

The wall-mounted heating boiler has a built-in LCD display and mechanical control using buttons. The screen displays the operating data of the device, which allows you to constantly monitor the heating process. The reliable burner is made of chrome-nickel alloy.

Control is carried out using a room thermostat. The safety of the device is ensured by built-in sensors for traction control, water flow, and flame control.

The boiler is equipped with anti-freeze functions, protection against jamming of a three-way valve and pump. The built-in diagnostic system monitors the device status, finds and determines faults.

Advantages and disadvantages

Easy to install and maintain, ergonomic, reliable, compact, operates in winter-summer-vacation modes. A large number of service settings allows you to select the most convenient operating mode.

The disadvantages are low power, high gas consumption, sensitivity to impurities in water. When the water heats up, the heating turns off and vice versa.

Installation is impossible in rooms without a chimney, the arrangement of which has certain requirements. Requires additional air flow, cannot be used in a room with forced exhaust.

Installation and instructions

Upon receipt of the heating device, you should check the package contents, appearance, warranty card and the availability of complete operating instructions. Installation, connection, configuration and initial start-up of the heating boiler should only be carried out by a specialist from the manufacturer.

When operating, the following points must be taken into account:

• repairs, replacement of parts or parts of equipment are carried out in special service centers;
• changing various settings parameters should also be carried out by a specialist;
• all inscriptions on the boiler body must be preserved throughout the entire service life;
• Failure to comply with these points during the warranty period allows the company to revoke the warranty.

Boiler price

Heating devices of this model are sold in any specialized store of the company at a price from 29,000 to 30,200 rubles. Here you can order a specialist for installation and initial setup of the device.

Protherm Panther 25 KTV

Specifications:

• boiler type – double-circuit;
• closed combustion chamber;
• equipped with a 7 liter expansion tank;
• hot water output is 1.5–12 l/min;
• power consumption – 10.6–26.5 kW, useful power – 8.9–24.6 kW;
• temperature adjustable from 38 to 60 °C;
• dimensions (H/W/D) – 740/410/311 mm;
• the boiler weighs 37 kg;
• equipped with a stainless steel plate heat exchanger;
• operating pressure from 0.5 to 10 atm;
• gas consumption is: natural – 2.84 m³/h; liquefied – 2.05 kg/h;
• The efficiency is 92.8%.

Model description

The wall-mounted boiler is equipped with an LCD display for easy control of the heating process. It has built-in protection functions against overheating, freezing, and accidental jamming of the pump and fan. The heater is equipped with sensors for water flow, flame control, and chimney differential. It has a safety valve, a water drain tap and a thermal fuse.

The device can be connected either to a stationary chimney and ventilation system, or to an autonomous coaxial system with its own chimney leading outside in any convenient place.

The function of finding and recognizing problems helps to monitor the technical condition of the boiler for timely shutdown or repair.

Advantages and disadvantages

This model has internal and external temperature sensors, is characterized by economical gas consumption, silent operation, convenience and ease of operation. It is equipped with two autonomous heat exchangers.

Disadvantages include a poor-quality pressure sensor, the formation of condensation and the frequent need for additional air pumping into the expansion tank.

Installation and instructions

Upon receipt of the boiler, you can independently check the integrity of the casing, the contents, the presence of an instruction manual and the manufacturer’s warranty; everything else should be done only by a specialist certified for this type of work.

Warranty obligations are fulfilled by the manufacturer provided that:

• installation, installation and configuration of the device, as well as connection of the external sensor and room regulator were carried out by a representative of the company;
• if it was necessary to repair the boiler or replace any parts, the consumer used the services of a service center;
• the heating device was operated in strict accordance with the attached instructions;
• During repairs and maintenance, only those spare parts approved by the manufacturer were used.

Prices for heating boilers "Panther"

The cost of boilers of this model in stores selling the company’s products is almost the same. These devices can be purchased in specialized departments at a price of 39,200–39,900 rubles. The departments also provide installation and commissioning services for equipment.

Comparison of gas boilers of three European brands

Such well-known European brands as Ariston, Protherm and Vaillant have proven themselves in operation and are recognized as the most popular brands of boilers for heating private houses and individual heating of apartments. Comparing these brands allows you to determine which types of boilers are more preferable for heating homes and hot water supply.

The quality of heating and the availability of hot water, and therefore the creation of comfortable conditions in your home, depend on the correct choice of heating equipment. In this case, you should take into account the cost of the boiler, its reliability, durability, efficiency and level of automation, which will ensure safety and convenient operation.

Protherm Bear 20 PLO

Specifications:

• open combustion chamber;
• the volume of water is 9.1 l;
• has an injection two-stage burner made of stainless steel;
• power consumption: natural gas – 12-17 kW; propane – 11-16 kW;
• fuel consumption: natural gas – 1.6-2 m³ per hour; propane – 1-1.4 m³ per hour;
• boiler dimensions (H/W/D) are 880/335/600 mm;
• the device weighs 90 kg;
• contains a cast iron heat exchanger;
• operates under pressure from 0.5 to 3 atm;
• The efficiency is 90%.

Model description

This floor-standing model only works in closed systems with forced water circulation.

It has two power modes “winter - summer”, ignition is carried out from the “eternal flame” piezoelectric element. The boiler is equipped with an LCD display, temperature indicator, draft and flame control sensors and a thermal fuse, as well as working and emergency thermostats. It has a built-in automatic self-diagnosis function.

Advantages and disadvantages

The boiler is easy to operate, reliable, economical and ergonomic. It is possible to connect a fan for forced removal of exhaust gases.

Disadvantage: slight noise during operation.

Installation and instructions

After delivery and unpacking of the device, the consumer must check the compliance of the boiler model with his order, inspect the housing, control panel for damage, check the packaging, the presence of installation and operating instructions, as well as the presence of documents establishing the warranty period of the device.

The basic conditions for installing and operating the boiler are as follows:

• the heating device is installed and used according to a design that meets the requirements of regulations and the manufacturer’s recommendations;
• it must be installed in a well-ventilated area;
• installation and commissioning work is carried out by a certified specialist;
• any boiler malfunctions can only be repaired by a service center authorized by the company;
• It is prohibited to erase or damage special inscriptions on the surface of the boiler;
• Unqualified intervention will void the warranty.

Price for “Bear” boilers

In stores selling the products of this company, you can purchase boilers of this model for about 38,000 rubles. It is recommended that, along with the purchase, you immediately invite a specialist to install and adjust the equipment.

Single-circuit floor-standing gas boiler for heating a private house

We will start the review with a single-circuit offer; such models are in demand where there is no need for hot water supply, and the purpose of the purchase is to equip a heating system at reasonable prices.

Gas boiler BAXI SLIM 1.490 iN

Perhaps one of the preferred options if you decide to buy a single-circuit gas boiler for heating a private home. Baxi is an Italian brand that occupies a leading position in the field of boiler equipment construction. Consumer reviews persistently note the best price-quality ratio among its closest competitors. In addition, a wide network of service centers helps to find a quick way out of unforeseen situations.

Baxi SLIM 1.490-N advantages

• The cast iron heat exchanger provides a heat demand of up to 250 kW, which helps to heat even two-story buildings with an area of ​​up to 370 square meters.
• High efficiency when using an open combustion chamber reaches 90%, while rivals in the price and technology category have no more than 87%;
• Possibility of sequential cascade installation;
• Electronic life support and protection system;
• Extremely compact installation. The width of the single-circuit boiler is 35 centimeters, such dimensions allow it to fit into the most limited space.

Main advantage: cast iron heat exchanger – high corrosion resistance, durability, and reliability. Among the shortcomings, a fairly rare problem has been identified. At times, the pops of gas micro-explosions, which occur as a result of depressurization of gas valves, can be clearly heard. As we noted, the service center will handle this and any other problem. In just a couple of hours, the sealing of the valves will be adjusted or replaced with new ones and the unit will again serve you faithfully.

2. Gas boiler Protherm Medved 50 KLZ

Gas boiler Protherm Bear KLZ is the simplest solution to survive the winter and enjoy the benefits of hot water supply. The design is floor-standing, two circuits, a built-in boiler with a capacity of 90 liters is located at the bottom, the device itself with a cast-iron heat exchanger is located at the top.

Protherm Medved 50 Benefits

• Preparing hot water in a 90-liter built-in storage tank eliminates the issue of additional financial costs for purchasing a separate boiler.
• 2 year warranty, efficiency 92%;
• Corrosion-resistant stainless steel atmospheric burner
• Economical: 50 kW will require no more than 5.2 m3/hour of gas;
• Providing an energy-efficient circulation pump for the heating circuit with an automatic air vent

Protherm Medved 50 Disadvantages

The joy of the owner of Protherm Medved 50 KLZ and potential buyers comes from the surprisingly reasonable price of the device. The boiler and boiler are all assembled and at a competitive price. Taking into account customer reviews, we consider the disadvantages of the boiler to be the forced pumping of the hydraulic tank three to four months after starting the boiler.

The next unpleasant moment may be a breakdown of the boiler loading pump. As testimonials from owners testify, Sometimes there is also a problem with the traction sensor, and installing the sensor closer to the exit helps to cope with it.

In general, the Protherm Medved 50 KLZ is noted as an excellent gas boiler for private homes, but still, if space allows, then individual elements are preferable. It is always easier to repair the boiler separately from the boiler, and replacing spare parts, for example, for the boiler and waiting for them after ordering, will not cause the entire system to stop.

Gas boiler Buderus Logano G334WS-73

German symbol of European quality. . In general, the series is considered so powerful that it moves from the category of household equipment to the industrial segment with a heating output range from 73 to 270 kW. Buderus Logano G334WS-73, a powerful stove with a two-stage atmospheric burner, produces enough heat to heat a residential building with an area of ​​up to 730 square meters.

advantages

• Despite the enormous power, the boiler turned out to be surprisingly compact. Very little space is enough for installation, even if there is a need to complete it with a boiler.
• The minimum service life of a cast iron heat exchanger is determined to be 20 years of operation;
• Noise characteristics allow installation in residential premises;
• Buderus, a company that offers the consumer a great variety of additional and varied modules, the configuration of which can significantly expand the functionality of the unit.

The disadvantages are nothing more than the reverse side of the advantages: firstly, the cast iron heat exchanger makes the gas boiler extremely heavy, and secondly, high power implies increased gas consumption. Reviews from homeowners agree: the use of Buderus Logano is always the best component in the decision to build a heating system in a large house or office building, or it will be extremely difficult to find the best options.

Baxi MAIN Four 24

Specifications:

• double-circuit boiler;
• has an open combustion chamber;
• the volume of the expansion tank is 6 l;
• hot water is produced in a volume of 13.7 l/min;
• useful power – from 9.3 to 24 kW;
• water temperature is adjustable from 35 to 55 °C;
• boiler dimensions (H/W/D) – 740/400/299 mm;
• weight is 30 kg;
• the heater is equipped with a bithermal heat exchanger;
• operating pressure in the system – 0.15–8 atm;
• natural gas consumption – 2.78 m³/h, liquefied gas – 2.04 kg/h;
• productivity is 90%.

Model description

The wall-mounted boiler is compact in size and has a wide LCD display and easy-to-use push-button controls. The device is equipped with protection systems against scale, overheating, freezing, and pump blocking.

To control the operating process, the boiler has sensors for draft, flame control, temperature, and a pressure gauge. The boiler is equipped with a safety valve, circulation pump, and automatic bypass.

The burner dividers are made of stainless steel.

Advantages and disadvantages

Compact, very economical, low fuel consumption, maintains optimal temperature in the house in any frost, completely silent.

No significant flaws were found in this model. Sometimes a spontaneous reboot is possible.

Installation and instructions

Boilers of this type are connected to the heating and hot water system in accordance with their power and characteristics. They can only be installed by a specialist from a licensed company.

Before installing the boiler you must:

• make sure that the equipment is configured to work with this type of gas (information on the packaging);
• check the chimney for draft and the absence of foreign objects, debris, soot, etc.;
• clean and rinse the equipment with neutral detergents to remove dirt and possible deposits;
• for the first start-up, commissioning and subsequent maintenance it is necessary to invite a certified specialist;
• installation and operation of equipment must comply with all applicable technical standards.

Prices for Baxi MAIN Four 24 boilers

The cost of heaters of this model is set in the range of 28,000 - 30,000 rubles; in a network of branded stores it varies in the range of ± 500 rubles.

Classification

To simplify the choice, all brand products are classified according to several criteria. By installation method:

• wall;
• floor

By design:

• single-circuit and double-circuit;
• with closed and open firebox;
• with atmospheric or forced-air burner:
• with cast iron or steel heat exchanger;
• with natural or forced draft.

The power of manufactured devices varies in the range of 7,000-100,000 W.

Bosch Gaz 6000 W WBN 6000-24 C

Specifications:

• type – wall-mounted, double-circuit;
• the boiler is equipped with a closed combustion chamber;
• it has an 8-liter expansion tank installed;
• hot water productivity – 13.7 l/min;
• useful power range – 7.2-24 kW;
• heating system temperature – from 40 to 82 °C;
• boiler dimensions (H/W/D) 700/400/299 mm;
• the unit weighs 34 kg;
• natural gas consumption is 2.1 m³/h, and liquefied gas consumption is 1.5 kg/h;
• maximum permissible inlet pressure – 10.5–16 mbar;
• two heat exchangers: copper and steel;
• The efficiency is 93.2%.

Model description

With its small compact size, the boiler has many necessary and useful functions. It features an LCD display with a large backlit screen and push-button controls. Data about the operation of the system is displayed on the screen. The device is equipped with the function of automatic parameter settings, equipment self-diagnosis and alarm signaling.

To control the safety of operation, the boiler has sensors for water temperature, pressure, flow with a coarse filter.

It is equipped with a pressure gauge, a three-speed circulation pump, an overheating protection system, an automatic air vent and a safety valve.

Advantages and disadvantages

Easy to operate, compact, no noise during operation, high performance, stable operation under pressure changes, good heat dissipation.

Disadvantages include the sensitivity of the heat exchanger to hard water (scale, deposits).

Installation and instructions

The boiler is connected only to closed hot water supply and heating systems; all other installations are considered to be used for other purposes.

To maintain your warranty, you must follow some guidelines:

• installation of equipment is carried out in full accordance with the requirements of the project and the manufacturer;
• work on installing, configuring and starting up the boiler must be carried out by employees of the service center with a license to authorize the provision of such services;
• repairs and alterations of equipment are entrusted only to a specialized organization;
• all replaced and installed spare parts must be original;
• The inscriptions on the boiler body remain intact throughout the entire period of operation.

Prices for boilers Bosch Gaz 6000 W WBN 6000-24 C

In terms of price in specialized stores, heaters of this model do not differ significantly. They can be purchased at prices ranging from 28,900 to 30,200 rubles.

Rating of wall-mounted gas boilers

Wolf CGG-1K-24

Double-circuit gas water heating unit made in Germany Wolf CGG-1K-24 wall-mounted
Wolf CGG-1K-24 (made in Germany) are the most reliable wall-mounted double-circuit gas boilers with a closed combustion chamber with forced smoke removal.

Important! Carbon dioxide is removed and oxygen supplied through separate or concentric chimneys (air ducts) - a special sensor independently regulates the fan speed depending on the length of the pipe to remove combustion products.

Advantages:

• high quality and efficiency;
• rational placement - possibility of installation close to the wall;
• the ability to use mains or liquefied gas (after replacing the nozzles and making changes to the settings);
• fast water heating;
• smooth start;
• compact dimensions;
• light weight (weight up to 45 kg);
• reliability;
• long warranty (24 months).

Flaws:

• high cost (52-55 thousand rubles).

Baxi Luna-3 Comfort 240 Fi

Double-circuit gas boiler Baxi Luna-3 Comfort 240 Fi for wall placement
The wall-mounted double-circuit gas boiler from Baxi is perfectly adapted to the specifics of operation in the CIS countries. It works even with minimal gas supply. The equipment has a removable digital panel, which allows you to install it in any convenient place. It also acts as a room temperature sensor. It runs on fuel from a line or bottle. A filter is provided for the water supply. The equipment has high quality workmanship and excellent functionality. Advantages:

• stable operation at low gas pressure;
• closed combustion chamber;
• special anti-corrosion coating of copper components of the heat exchanger;
• possibility of connecting an additional boiler for a hot water supply system;
• two heating modes (normal and warm floor);
• timer with weekly programming;
• it is possible to connect an outdoor temperature sensor;
• digital monitor, which displays all the necessary information;
• electronic self-diagnosis.

Flaws:

• high cost (45-47 thousand rubles);
• Sensitivity of electronics to power surges - it is necessary to connect through a stabilizer.

Bosch Gaz 6000 W WBH 6000-24C

A gas wall-mounted double-circuit boiler from a well-known German company was created adapted to the climatic conditions of Russian regions, as well as the characteristics of domestic electrical and gas networks.

Double-circuit heating boiler Bosch Gaz 6000 W WBH 6000-24C (Germany) wall-mounted

Advantages:

• compactness;
• modern design;
• high efficiency;
• stability of operation at constantly changing gas pressure;
• the ability to connect to a cylinder or line (after changing burner nozzles and adjustments);
• modern smoke exhaust system;
• high security;
• ideal price/quality ratio;
• high quality assembly.

Flaws:

• quite high cost (27 - 33 thousand rubles)
• small thickness of steel body parts.

Navien Deluxe 24K

Double-circuit boiler with a closed combustion chamber, a highly functional unit. It has a closed combustion chamber. Adapted to working conditions in the post-Soviet space.

Double-circuit gas boiler with increased functionality Navien Deluxe 24K

Peculiarities:

1. Built-in frost protection - if the temperature of the liquid in the heating system drops to 10 degrees, the pump automatically turns on; upon further cooling to 6, the burner starts until the water reaches 21ºС.
2. Stable operation at low pressure in the gas and water pipes - the system operates at the corresponding indicators of 4 bar and 0.3 bar.
3. A control panel is provided.

Advantages:

• separate stainless heat exchangers;
• modulated boost, increasing efficiency;
• internal components made of high quality copper;
• affordable price;
• high quality assembly;
• wide functionality.

Flaws:

• instability of outlet water temperature.

Protherm Cheetah 23 MOV

These devices are perfect for installation in apartments and country houses. They are double-circuit boilers, which allows you to heat water and simultaneously heat the room. Efficiency – up to 93%. Advantages:

• ease of operation;
• a monitor showing all the necessary information about the operation of the device;
• automatic diagnostics;
• several modes - warm floor, comfort and winter/summer;
• there is an option for connecting automatic weather monitoring systems;
• built-in pump;
• protection against freezing and overheating;
• operates from a gas line or cylinder.

Wall-mounted gas heating boiler Protherm Cheetah 23 MOV
Disadvantages:

• It is imperative to install a separate filter on the incoming water to protect the boiler system from salts;
• Possibility of installation only if there is a chimney in the home.

Buderus Logamax U072-24K

Specifications:

• wall-mounted, double-circuit boiler;
• equipped with a closed combustion chamber;
• expansion tank – 8 l;
• power – 8-24 kW;
• hot water output is 13.6 l/min;
• water heating is possible in the range from 40 to 82 °C;
• overall dimensions (H/W/D) – 700/400/300 mm;
• weight is 36 kg;
• natural gas consumption – 2.8 m³/h, liquefied gas – 2 kg/h;
• working pressure – 3 bar;
• primary heat exchanger made of copper, secondary heat exchanger made of stainless steel;
• Efficiency – 92%.

Device Description

A small, original, stylish model with a liquid crystal display and backlighting on the central panel. The device is equipped with functions necessary for control and safe operation of the device.

Built-in sensors for controlling flame, pressure, temperature, and water flow. A cold water filter and pressure gauge are installed at the inlet.

The device is equipped with a three-speed circular pump, a three-way valve, an auto-air vent, a safety valve, and a water drain tap.

The device has a built-in function for self-diagnosis and automatic adjustment of system operating parameters; it is possible to connect an alarm sensor.

Advantages and disadvantages

Excellent design, economical, high heat dissipation, silent operation, high-quality assembly, not afraid of low pressure, antifreeze can be used instead of water. Two separate heat exchangers allow the unit to be used in areas with hard water.

No shortcomings were found, which affected the cost - it is quite high.

Installation and instructions

The boiler is designed for connection to closed systems with forced water circulation. It is installed in houses of various storeys with centralized chimneys and an area of ​​up to 250 m².

After delivery of the equipment you must:

• check the integrity of the case, the presence of the instruction manual and warranty card;
• make sure from the information on the packaging that you have received exactly the device you ordered and configured for this type of gas;
• clean the boiler from deposits and dirt with a neutral detergent;
• invite a certified specialist to install and commission the boiler.

If there is a malfunction or failure of the heater, you should contact a special center, and do not try to repair the boiler yourself, otherwise you may lose the warranty.

Rating of wall-mounted condensing gas boilers

Vaillant ecoTec plus VUW INT IV 246

Wall-mounted gas boiler made in Germany Vaillant ecoTec plus VUW INT IV 246
German gas boiler. The thermal power of the unit is 20 kW, which allows it to be used for heating housing up to 200 square meters. m, the device is designed for stable water heating and heating. To increase the temperature of the water in the pipeline, a hidden condensation system is additionally turned on, due to which it is possible to achieve the declared performance with significantly lower fuel consumption.

Peculiarities:

1. Built-in function for increasing power in DHW mode.
2. Also suitable for low temperature heating systems.
3. External and internal oxygen supply to support combustion.
4. Backlit display.
5. Electronic ignition.
6. Heat exchanger made of stainless alloy.
7. Built-in pump.
8. Expansion tank 10 l.

Advantages:

• modern design;
• high quality;
• efficiency.

Flaws:

• connects to the general network only through a voltage stabilizer;
• high cost (75-77 thousand rubles).

Baxi Duo-tec Compact 24

Inexpensive boiler made in Italy, with a closed combustion chamber and stainless steel heat exchangers. The model has simple and convenient controls. Installation of the unit is not technically difficult.

Important! The device has an adaptation system to different operating conditions. Even if the gas pressure drops, the rated power is maintained.

Gas heating boiler made in Italy Baxi Duo-tec Compact 24 with liquid crystal display
Advantages:

• light weight;
• compactness;
• high efficiency;
• low noise and vibration levels;
• efficiency;
• quality components and reliable assembly.

Flaws:

• dependence on power parameters in the network;
• quite high cost (45-53 thousand rubles).