How to choose a gas boiler for home, which is better and what to look for when buying gas heating?

Why buy a gas boiler?

Gas heating equipment is still one of the most demanded among ordinary consumers.. And there are a number of good reasons for this..

• At first, gas boilers have proven themselves well in the construction and arrangement of private houses, of which there are a lot in any country, including Russia, Belarus, Ukraine. Naturally, in some village or in a new private sector, there is no need to dream of central heating, Therefore, the only reasonable way out in such cases will be the installation of an individual boiler, natural gas. Why actually on gas, Some of you may ask? Yes, there are also solid fuel boilers, which can also work on coal, and on the wood, and on other available natural resources. However, to operate a gas boiler, you do not need to constantly monitor the fuel., adding it periodically is convenient, is not it?
• Secondly, natural gas is a relatively cheap type of fuel, which is available to most modern cities and towns, If of course, There are trunk communications nearby. There is another option - liquefied gas. In such cases, somewhere on land plots, a container with liquefied gas is buried. (gasholders) and connect it to the house. Fuel container must be periodically referred, And every approximately 10-20 years of GAZGolder will need to be examined. All this is not very convenient and, what is important, it is much more expensive than the use and maintenance of a small boiler, natural gas. That is why individual boilers for heating the house are in constant demand among the vast majority of consumers.

Three reasons buy a gas boiler

1. Convenient and compact
2. Relatively inexpensive fuel
3. Simple service

Today there is a wide variety of models, which are distinguished by their configuration, capabilities and, naturally, price. So which boiler will be the best option and how to choose the right The best gas boiler for effective heating of a private house?

How to calculate the power of a gas boiler?

If you are not friends with mathematics, do not be scared - everything is very simple! For, In order to approximately evaluate the necessary power for heating, you only need to know the quadrature of the house or premises in conjunction, which you plan to warm. And it will not be difficult for you to remember the formula - 1 kW approximately on 10 sq.m.

Sure, These are very simplified calculations without taking into account thermal losses of the house and additional coefficients, but they will allow you to quickly understand what power the gas boiler will need you. So, eg, it turns out, what for heating a house, whose area does not exceed 250 sq. m., The boiler in a power in 24 kWs taking into account hot water supply (One bathroom and kitchen).

It is also worth remembering, that when calculating power, it is useful to take into account all possible thermal media in the house, which in theory can be included simultaneously. For example, If everything is in the same house 250 sq. m. There are two bathrooms and pool, then probably gas equipment with power 24 kW may not be enough for that, so that all these points of energy consumption work simultaneously and efficiently. For more detailed calculations of the power of the calculation boiler, the following formula contains:

• Q=K×V×ΔT
• Q - heat loss;
• K - statistical coefficient of heat loss of the room;
• V - room volume (width Length height);
• ΔT is the maximum possible temperature difference in the region.

When you get the result, then divide it by the constant power indicator 1 kWh = 860 kcal / h.

Single -circuit or double -circuit - which one to choose?

Everything is relatively simple here and the issue is solved depending on the type of task, which you want to put in front of the equipment. If you just need heating without hot water (Suppose, You have a gas column), Then you can safely purchase a single -circuit gas boiler. But if you need, so that heating and hot water supply work in the house, eg, for bathroom and kitchen, then you need to buy a double-circuit boiler.

The main types of gas boilers

All gas boilers can be divided into three types:

• Hinged
• Floor standing
• Condensing

A hinged boiler is the most popular type of gas boiler among most people, who buy heating equipment. There are a number of significant reasons for this.

1. At first, hinged gas boiler is quite compact, He will not take up much space in the house.
2. Secondly, It is relatively easily installed and connected to the existing heating system.
3. Third, a hinged boiler compared to the full installation of other types of boilers is the most economical solution.

Middle -class hinged boiler, according to source, It will cost approximately 600-1200 euro depending on power and configuration. A huge plus of these boilers is, that all the necessary equipment for the normal functioning of the heating and water heating system is already included in the standard equipment, that is, you will not need to buy separately, eg, pump or equip a separate chimney.

As for the floor boiler, then installing this type of equipment will cost you more, If we consider in comparison with the attachment similar in power. The floor gas boiler does not always have a built -in pump for pumping water in the system. Plus to everything, When installing this equipment, you will need to equip a separate chimney in the house, which should have a special stainless pipe inside. You will have to buy and mount all this additionally.

note! If a boiler room with a hinged boiler can cost you before 1000 euro (we do not take into account radiators and heating pipes in the house), then a boiler room with a floor boiler will cost you at least 1500 Euro along with the work of installing all the necessary components.

We have already talked about floor and wall boilers. But what is the condensation gas boiler? The main difference between this type of equipment and others is, that efficiency is equal 100%, and the boiler itself can be hinged, and floor. That is, the main advantage of this boiler will be that, that it can help you save about 15-25% gas consumption.

However, not everything is so simple and it is worth knowing about some nuances.

1. At first, The boiler itself will cost more than wall or floor analogues.
2. Secondly, for, so that the condensation boiler works in the maximum efficiency mode, The temperature of the reverse water in the system should not exceed 40 degrees. And here is the main nuance, since the low -temperature system requires the installation of more powerful radiators, more powerful in 2-3 times, depending on the size of the room. In other words, your costs for arranging a home heating system in this case will be much higher.

Sure, There are advantages in the installation of a condensation gas boiler, but to install a competent heating system (So, To maintain the main advantage - gas saving) You will need no less 2000-3000 euro along with all materials, equipment and installation work.

So far, gas prices are relatively low, condensation boilers are not in great demand, However, if fuel prices will increase significantly, Then the heating system, along with a condensation gas boiler, can recoup itself in a few years ...

Open or closed combustion chamber?

One of the criteria for choosing a gas boiler can be the type of combustion chamber. What it is?

The difference is, that the work of the boiler with an open combustion chamber (eg, atmospheric boiler) It is required to install a separate chimney in a well -ventilated room, since the air fence will in this case be carried out directly from the room itself. As we have already mentioned before individual chimney, this is additional expenses. Therefore, a more economical option is boilers with a closed combustion chamber. Such boilers are equipped with a turbine, which forcibly helps to remove spent gases through the coaxial chimney, Usually small size. In this case, you do not need to remove a separate room for installing the boiler, Since the air fence in boilers with a closed combustion chamber will be carried out from the street.

At the moment, all hung gas boilers have a built -in turbine, That is, a closed combustion chamber.

Manufacturers of gas boilers or which brand to buy?

The most popular manufacturers of gas boilers are the following brands:

1. Vaillant (Germany);
2. Bosch (Germany);
3. Buderus (Germany);
4. Wiessman (Germany);
5. De Dietrich (France);
6. Protherm (Czech Republic);
7. Immergas (Italy);
8. Ariston (Italy);
9. Daewoo (Korea).

In fact, the question of, Which brand of boiler is better, It remains open so far. Everyone chooses for himself the most suitable model for the price and required configuration. In this case, the brand plays a secondary role..

Sure, Such manufacturers as Viallat or Wiesman and WISMAN and the most promoted well and most promoted, If you have enough necessary funds, then you can safely choose some models from these manufacturers. However, gas boilers from Immergas or Ariston will work no less regularly, the price of which is much lower, And in terms of service life and reliability, they are practically in no way inferior to more expensive analogues. Only the complexity and power of the heating system can play an important role here.

If you have a large heating area or you have increased requirements for the automation of a gas boiler, then you should choose premium boilers, eg, Vaillant. If you need a relatively small power, and the heating system is standard, Then you can well choose a gas boiler of the middle price category, eg, Immergas. The choice of brand is up to you...