How to choose a water heater (boiler) First I would like to say what a 'boiler'. In technical terms, boiler – water heater storage type. Plain language – a system of heating element and the tank, which heats the water and to a certain temperature and maintained at the same level. This is useful if there are any shortages of hot water. We will tell you about its structure and help select the desired model.Gazovy or electrical energy for the boiler boylerIstochnik may be gas or electricity. But some of them prefer? Water heater capacity of 1-3 kW (some Models up to 6 kW) are able to work from ordinary electrical outlet, so you connect it to the power supply line is not obyazatelno.Esli install gas water heater, you will get an advantage in time of heating. Capacity gas boiler starts from 4-6 kW, compared with a maximum capacity of 1.5-3 kW electric majority, looks impressive. An example of the water heater 150-gallon tank can be seen that the gas equipped with burners on the average power of 7 kW, whereas for electric boilers used 1,8-3 kW heating elements. Ie in the gas boiler to heat 150 liters of water needed just over an hour, and at least two hours (and sometimes more) will go as long as the same amount of heated in an electric accumulator vodonagrevatele.No to install a gas water heater will need more and build the chimney. The complexity of installation depends on whether closed or open The combustion chamber is provided in the construction of water heater.