Sealed Or Vented Systems
Most houses have a form of heating and it is recognised that the most common is gas central heating. In terms of the systems within your dwelling the central heating system will be one of the most costly and the one that is in everyday use, and cooling systems are seen less often. Nowadays central heating systems are a feature in every modern family.
Purchasing a new central heating system is not a straightforward subject, you first need to picture what type of system is best suited to your family. In this section we will discuss that the variants of central heating system available to help you match them to your needs. Most if not all of these Central Heating System comprise of a boiler, radiator and pipe work.
Having become used to modern creature comforts we cannot do without a heating system. Heating your dwelling house provides a restful and cosy ambience. The central heating system also can give you a cheap source of hot water. Dependability is a major requirement for your central heating system. You will want an efficient system that works in the background without any niggling failures.
The main variants of the central heating system are sealed systems and pumped systems.
The most frequent type is a pumped or vented system. This type of system has a feed and expansion tank together with a hot water cylinder. The expansion tank permits the system to be topped up with water and creates headroom for the hot water to expand when the heating system is used. The expansion tank needs to be mounted higher than the other system elements and most often this will be positioned in your attic.
As thinking develops sealed systems are now more commonly being installed in homes. There is no need for the water expansion tank if you prefer to have a sealed central heating system fitted. A sealed Central Heating System is attached to the mains water supply to allow the removal of the water feed tank. This removes the requirement for any pipe work or central heating water tanks in the loft, you will get the following advantages when adopting a sealed system:
– reduces the risk of leaking
– there are fewer system components reducing any maintenance requirements
– you don’t need to care about pipework in the loft freezing
– as the system is sealed there is less chance of air introduction leading to corrosion or air locks
A pressure vessel is included in the system to deal with any pressure variances in the water supply. If the pressure becomes too high in a sealed Central Heating System; a safety valve will allow water to escape from the system and if the pressure drops too low a valve will open to refill the system with water.
David is the author of Heating Boilers , a web site which contains help and advice on selecting the right central heating boiler. http://www.heating-boilers.org . Please have a look at the site and the detailed ideas on how to reduce your boiler installation costs.