Due to the fact that most country houses in European cities and towns are not equipped with central heating, the issue of heating a home is quite acute. Gas heating systems quite easily solve the issue of creating autonomous heating. If an electric water heater is installed in the house, then the best solution would be.
Today, the European climate technology market is overflowing with heating systems from manufacturers from Germany, Italy, France, Slovenia and China. In terms of its characteristics, domestic equipment is not inferior to the leaders of this segment and is on a par with such brands as Bosch, Vaillant, Baxi, etc. Even a specialist can get confused in a huge number of models, manufacturers, brands. That is why the domestic consumer is increasingly asking the question, which gas single-circuit boiler is better?
Criterias of choice
To choose the right model of a heating boiler, you should have an idea about the design and principle of operation of the device. If there is no such knowledge, then contact the experts. If you imagine how single-circuit gas installations are arranged, then before choosing a particular model, pay attention to the following points and design features:
- Manufacturer. Manufacturers from Germany (Bosch, Vaillant) are leading in the production of reliable gas heating installations. The most functional single-circuit boiler units are offered by manufacturers from South Korea (NAVIEN), Slovenia (Protherm). Italian manufacturers offer devices with the best combination of price and quality (Baxi and Ferrolli).
- Ignition type. In modern heating boilers, you can find electronic and piezo ignition. The first type — involves the ignition of the gas mixture in automatic mode. In the second, batteries are used as a power plant. Ignition requires human intervention.
- Burner. Single-circuit boilers use single-stage and modulating burners. Single stage always run at 100% power. Modulated — more modern, allow you to change the heating power of the coolant in the range from 30 to 100%. In addition, the burner can be atmospheric or turbocharged. Atmospheric — more hardy and silent. Turbocharged — have a higher efficiency, but also cost significantly more.
- heat exchanger material. For the heat exchanger, a material with good thermal conductivity and resistance to high temperatures is selected. Copper is a material with better thermal conductivity and a low melting point. A boiler with a copper heat exchanger should be selected with a low power equipment. In addition to copper, stainless steel is used for coils, which is characterized by average thermal conductivity and durability. Cast iron heat exchangers are durable, but due to their high weight they are used only in floor models.
- The combustion chamber. Modern boilers are equipped with an open or closed combustion chamber. In the open, the air intake comes from the room, in the closed, the air comes from the street through a coaxial chimney.
- Removal of combustion products. Exhaust gases are removed in modern heating boilers using natural and forced draft. In the first case, a vertical chimney and good ventilation in the room with the boiler are required. In the second option, combustion products are removed through a coaxial chimney using a built-in fan.
In order to provide assistance, a rating of heating installations was compiled, based on operational characteristics, design features and reviews of real owners.
Vaillant turboTEC plus VU 122/3–5
single-circuit wall-mounted boilers opens one of the most functional heating devices — Vaillant turboTEC plus VU 122/3–5. This multifunctional unit is designed for heating small areas, up to 120 m2. The rated power of the boiler is 12 kW, which is controlled automatically by a modulating burner. The device is equipped with: a closed combustion chamber, a turbine for the forced removal of exhaust gases, a built-in multi-stage pump that drives the coolant, a copper heat exchanger, an electronic ignition unit and a control unit for all plant functions, information about which is displayed on an informative LCD monitor.
This model is adapted to work in electrical networks with voltage drops, thanks to the built-in stabilizer. The boiler works without losing power at reduced pressure in the gas pipeline. To work together with a water heater, Vaillant turboTEC is equipped with the necessary connectors. Efficiency — 91%. The average cost in European stores is 500 $. Disadvantages — high cost.
Baxi FOURTECH 1.24F
This popular wall-mounted model is equipped with a closed combustion chamber, turbocharging and a forced smoke exhaust system. Flame modulation in the burner allows you to change the heat output in the range from 9.3 to 24 kW. Maximum heat load 25.8 kW. The material of the heat exchanger is copper. The boiler unit is equipped with a water pump for forced movement of the coolant through the heating system. A 6‑liter expansion tank allows you to compensate for the expansion of the coolant due to its heating.
For comfortable use, the unit is equipped with an indication of modes, auto-ignition, and a built-in thermometer. Safety is ensured thanks to the protection of the heat exchanger from overheating, a blast valve, a gas control system. The unit has an automatic self-diagnosis function. The efficiency of the device is 92.9%. The average cost is 320$ 8 dollars. Disadvantages: in some models there were problems with the gas valve.
According to our experts and based on price — quality — functionality, the best single-circuit wall-mounted boiler from European manufacturers is Baxi FOURTECH 1.24 F
Neva Lux 8618
This model is a single-circuit heating boiler with small dimensions from the European manufacturer Gazapparat. The maximum power of the device is 18 kW. According to the manufacturer, it is enough to heat an apartment or a small private house, up to 180 m2. The boiler is equipped with an open combustion chamber, therefore it requires a separate chimney and good ventilation in the room where it is installed. The almost silent operation of this mini-boiler room is due to the use of an atmospheric burner. Thanks to the use of a copper heat exchanger, the efficiency declared by the manufacturer is at around 90%. Gas consumption 2.13 m3/h When switching to liquefied gas, the consumption is 1.59 kg/h.
Comfortable use of this boiler unit is due to the presence of auto-ignition, the temperature and pressure in the system are displayed on the front panel of the unit. Safety is ensured thanks to the gas control system, a safety valve on the water circuit and protection against overheating of the heat exchanger. This model features low fuel consumption and ergonomic design. It is possible to connect: indirect heating boiler; systems “warm floor”; air turbine; external thermostat. The average price is 200 $. Disadvantages: often turns on and off without an external thermostat.
This model is designed for apartment heating in multi-storey buildings and private houses, up to 300 m2. The unit is equipped with a closed fuel chamber and has a capacity of 30 kW. The removal of exhaust gases is forced, with the possibility of using a separate and coaxial chimney.
The peculiarity of this device is: continuous modulation of combustion; the presence of 1 copper heat exchanger, not subject to low-temperature oxidation; automatic ignition with flame level control. It is possible to connect a water heater and switch to liquefied gas. The main advantage of the boiler is accurate temperature control and the possibility of using propylene glycol-based coolant. Consumers positively evaluate this heating boiler for stable operation at low fuel pressure and voltage drops. Efficiency at 100% power — 92.5%. Cost — 360 $.
If you decide to support a domestic manufacturer and wondered which single-circuit wall-mounted heating boiler is better, then according to our experts and in terms of price-quality-functionality ratio, the best single-circuit wall-mounted boiler from a European manufacturer is the NEVA-8230–1 model
As noted above, in the last decade, most of our compatriots prefer living outside the city in their own houses and cottages. Unfortunately, they are limited in power, so it is not always advisable to use them for heating large private houses. In this case, underfloor heating systems come to the rescue. Next, a rating of gas floor boilers from European and European manufacturers will be presented.
Protherm Medved 50 PLO
It is a floor heating system with an atmospheric burner and an open fuel chamber. The maximum power of the boiler is 44.5 kW. The design of this mini-boiler room includes a built-in boiler for 110 liters. to create a hot water system in the house. A feature of the boiler is the use by the manufacturer of a reliable and durable cast-iron heat exchanger. According to the manufacturer, its service life reaches 20 years. Main advantages: low fuel consumption 5.2 m3/h; protection class IP 40; Efficiency 92%. Disadvantages: does not work in gas pipelines with low pressure. Cost — 700 $.
Vaillant AtmoVit INT 164–564/1–5
Designed for heating a small private house or cottage, with a total area of up to 120 m2. Equipped with a single-stage atmospheric burner, cast iron heat exchanger, electronic ignition and flame level control sensor. A feature of this model is the design of the burner with ceramic rods and a fuel flow regulator. The open chamber and the absence of pressurization make it impossible to install it in a room that is not equipped with ventilation and a natural draft smoke exhaust system.
Advantages of this heating system: high efficiency — 94%; the ability to connect an indirect heating boiler; the presence of automatic self-diagnosis. The average cost is 70$ USD. Disadvantage: there are no VRC 420S regulators in the package.
Lemax Premium 20 is a European-made single-circuit non-volatile boiler unit with a capacity of 20 kW. The unit is equipped with a steel body, 2 mm thick, an atmospheric burner and an open fuel chamber. A feature of this device is the innovative design of the heat exchanger, with protection against overheating and coated with a special enamel that prevents its corrosion. The advantages of this device: the presence of an air flow regulator, self-diagnosis functions. Efficiency — 90%. The average cost is 210 $. Disadvantages: frequent problems with ignition, general shortcomings.
Conclusion: in terms of price — quality — functionality, Vaillant AtmoVit INT 164–564 / 1–5 is unanimously recognized as the best floor boiler.