How to choose a gas boiler

A properly equipped heating system in a country house is the primary factor that directly affects comfort. Who wants to endure the constant cold and dampness of the room instead of enjoying the comfort? If it so happens that there is no central heating in your home, you need to resort to alternative heating sources. This can be a fireplace or an ordinary rustic stove, or maybe a modern gas boiler – a compact, easy-to-use and very functional device that allows you to quickly and, most importantly, economically heat even large and spacious houses. All that is needed is to choose the right gas boiler, as well as to think over the heating system.

Manufacturer's choice. What gas boilers are popular?

Despite the presence of a large number of diverse models on the market, preference should be given to exclusively proven equipment from well-known brands, certified by the relevant services of our country. The best are traditionally considered to be well-known European manufacturers of household appliances and industrial equipment, which have tremendous experience in the production of such devices.

1. Bosch;

2. Baxi;

3. Protherm;

4. Valliant;

5. Buderus;

Before giving preference to a particular model, you need to familiarize yourself with its key features, as well as study user reviews, taking into account both positive and negative experiences.

The principle of operation of gas boilers and their main types

The operation of a gas boiler consists in efficient combustion of an air-gas mixture, as a result of which the room is heated, as well as water is heated. The gas is ignited using a burner or a piezoelectric element, and during its combustion, the heat exchanger heats up. The latter is in contact with a heat-conducting liquid, which is forcibly pumped with a pump through the entire heating system of the house.

Types of gas boilers

Single-circuit

The principle of operation of such devices provides for the presence of one heating circuit. A source of cold water is supplied to the device, and at the outlet of it the water heats up and becomes hot. Accordingly, both the heat exchanger and the circulation pump are present in a single copy, and the main purpose of such boilers is to equip the heating system of a residential building.

Advantages

• Simple construction;

• Low price;

• Low gas consumption during operation;

• Unpretentiousness in operation and maintenance;

disadvantages

• For the equipment of the hot water supply system, a separate device must be installed;

Double-circuit boilers

Devices that allow realizing not only the heating system of a residential building, but also allowing the implementation of a hot water supply system. It is assumed that there are two separate heat exchangers (or one bithermal), working in tandem with one joint circulation pump. In standard mode, the system works to pump water in the heating system, and when the hot water tap is opened, the circuit opens, and the pump begins to transfer water along the second circuit to the tap. When the valve is closed, the system returns to its original state.

Advantages

• Compact dimensions;

• Ability to operate exclusively in water heating mode

• Versatility;

• Ease of operation;

disadvantages

• Complexity of installation;

• High price;

What to look for when choosing a gas boiler?

Device power

A parameter that directly affects not only productivity, but also the total gas consumption. The general rule when choosing such devices is that one kilowatt of boiler energy is enough to heat 8-10 square meters of area. If it is planned to use the boiler not only for heating, but also for hot water supply, it is necessary to add 25-30% to the required power, and 10-15% of the reserve power is almost always added to the resulting amount. The final figure obtained as a result of the calculations will denote the power that is needed for the efficient functioning of heating and hot water supply systems.

Wall mounted or floor mounted?

When deciding on a specific device, it is necessary to closely examine the area of ​​the furnace – the place in which it will be installed. Depending on the amount of available space, a specific model is selected – either it will be a floor-standing boiler, or its wall-mounted counterpart, when there is not enough space on the floor.

Automation systems

The more expensive the boiler is, the more perfect its design and the less it needs manual control. The most efficient models are equipped with a variety of automatic systems that maintain the efficiency of the boiler at the proper level, reduce gas consumption and help save water.

Protective equipment

A gas boiler is a source of increased danger, and therefore each manufacturer strives to maximally secure and protect users from emergency situations. Protection against overload and attenuation, protection against insufficient pressure of water and gas – the occurrence of even the slightest danger should lead to the operation of the protective automatics.

Combustion chamber type

Currently, the most popular are two main types of gas boilers – with an open and a closed combustion chamber. Boilers with an open chamber need atmospheric air to maintain the combustion process, while ventilation is carried out naturally, through the chimney. As a result of the operation of such a device, a lot of oxygen is burned, and therefore such devices must be installed in places with excellent air exchange; such models are unsuitable for installation in residential premises.

The second type of boilers does not have direct contact with the atmosphere, and their combustion chamber is equipped with two nozzles: one by one is a forced supply of oxygen, the second one removes exhaust gases outside. Such devices are characterized by maximum functionality, and their installation can be carried out even in an ordinary apartment.

Which gas boiler to choose?

1. For installation in a small apartment, a miniature double-circuit boiler becomes the best option. The combustion chamber of such a device must be closed, and the ventilation system is brought out of the room. Its power is calculated based on the area of ​​a particular room;

2. A private house will require the installation of a sufficiently single-circuit boiler with a remote control, designed for heating. For hot water purposes, it is best to use an external boiler. As a rule, the power of such a device is 15-40 kW.

Video for choosing a gas boiler

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Attention! This material is the subjective opinion of the authors of the project and is not a purchase guide.