In general, a boiler is a vessel in which water or other liquid is heated (and not necessarily boiled). A system boiler is a type of a condensing boiler. Condensing boilers are called so because the vapor produced in the process of their work is condensed into water, thus the waist heat is used to pre-heat cold water. So their efficiency is mostly greater than 90 %, compared to the usual 75-85 % of other boilers. As they are resource-saving and require less fuel, the use of condensing boilers is obligatory or stimulated by financial incentives in many countries.
A system boiler is also known as a “sealed system”. It works on the principle of stored hot water, and it is designed for heating water from the mains immediately. Its specific feature is that many of the major individual components of the heating and hot water system, such as the expansion vessel and the pump, are built into this boiler. It contributes to quick, neat, easy and efficient installation.
In this construction hot water is pumped through the heating system from the boiler right to the radiators and hot water cylinder, so that your house will heat up quicker, thus reducing the running cost.
The use of a system boiler gives you a considerable number of advantages. Some of them have already been mentioned, but consider also the following:
But of course as with all boilers certain problems may also arise, such as mentioned below:
Nowadays there exists a wide range of boilers, and one of them is sure to suit you best both in price and in reliability and performance. But remember that some minor details may influence the right choice, and the best thing you can do is get proper advice. It is especially important if you have never dealt with boiler installation and have no experience of your own. Most boiler manufacturers provide the services of a boiler installer free of charge. They visit your home, access the general situation and help to choose the boiler particularly meeting your needs. Or you may get a recommendation from a household energy consultant. Always remember that a boiler will have a drastic influence on the quality of life in your house. So choosing it without much experience and in haste is certainly not the best way to save time and money.