Smaller homes can benefit from fitting a combi gas boiler as they need much less space than orthodox heating boilers. With just a combination gas boiler and balanced flue you have all the components you require to install a full central heating system. To complete the heating you just need radiators, the required fittings and a quantity of copper pipes. Your first reaction maybe that we had forgotten some components. The hot water storage cylinder, the feed and expansion tank ordinarily put in the attic, the central heating pump and other component components that central heating and hot water systems seem to need.
The response to your queries would be that with a typical combination gas boiler you do require these component parts. The hot water storage cylinder can be excluded from your system, you do not need a feed and expansion cylinder up in the loft, the combination boiler also incorporates the other small components. So you can see with a combi gas boiler you can save a respectable amount of space within your dwelling house.
Do not think that all this is new as combi gas boilers have been fitted for a while now. The combination has been more popular in the Continent than in the U.K., but is now being fitted more frequently as an alternative to the traditional wall mounted gas boiler. By comparison with conventional heating boilers you will see that there are two main differences. A fully sealed system contains the circulating hot water for the central heating. The benefit of this is that there is no need to fit a feed and expansion tank in the attic. A second gain is withdrawing the need for the hot water storage cylinder as the gas boiler stocks its own hot water.
Hot water is produced as you need it, turning on a hot water flags this requirement to the heating boiler. And economical internal heat exchanger enables the heating boiler to rapidly heat and cold water. Water from the sealed central heating circuit is heated and is diverted to the hot water heat exchanger heating it up. On the other side of the heat exchanger cold mains water is heated before finishing its journey to the hot water valve.
The boiler design gives priority to getting instant hot water. The moment the tap is shut the combination gas boiler will return to providing hot water to the radiators.
So in summary and combi heating boiler can save you a substantial amount of room in your dwelling house.
