The advantages and disfavours of the contrasting central heating boiler forms

Various types of Gas Central Heating Systems are available in the central heating market. These systems for the most part are made up of a number of radiators, pipework and of course a gas heating boiler.

In most parts of the UK air conditioning is hardly needed because of the average temperatures of those regions. That is why in the United Kingdom most houses built these days are built with Gas Central Heating Systems fully integrated into the home.

As autumn fades and chilly winds begin to blow, homeowners turn to their Gas Central Heating for warmth and comfort. While snowstorms rage on outside, you can be safe and warm on the inside. Therefore your heating system needs to be efficient and reliable. Additionally, your heating system should also be safe, user-friendly and durable.

Sealed and vented or pumped systems are the two leading types of Central Heating Systems available.

Pumped/vented systems are the ones that many homes have and they have the most components resulting in potentially higher maintenance costs. An expansion tank is present in a pumped heating system. Your house gets hot water through the stored hot water tank, it also supplies heat to the central heating radiators. The expansion tank has adequate space to accommodate any water expansion that occurs due to heat. The tank is placed in the highest place, normally the attic area. The tank provides a dual supply of hot water and warmth for the house.

Many homes feature a pumped/vented Gas Central Heating System, particularly the ones constructed several year ago.

A slightly newer gas boiler is sealed heating system and this is the preferred central heating system in newer properties. No water tanks are needed with the sealed system. This unvented system eliminates water tanks and attic plumbing, thus giving a number of advantages.

- There is no chance of pipes freezing in the attic.

- No maintenance or repair work is required for the pipes and tank which would have been in the loft.

- Because the system is not vented, there is less chance of water leaking out.

- The risk of airlocks, corrosion and gunk are reduced because there won’t be any air being taken down into the system through the open holes as the system is sealed.

- It is possible to flush out the system if required by using the mains water supply.

A sealed Central Heating System is a packaged unit with all the necessary controls and safety devices. The water for a sealed Central Heating System is supplied direct from the main water supply. The main water supply feeds the system directly under pressure.

Normal variations of pressure can be allowed in a sealed system through a pressure vessel that contains compressed gas; this is separated from the sealed system water by a diaphragm. Pressure buildup in a Sealed system can be relieved by a safety valve which drains out water; and pressure drop is compensated by automatic fresh intake of water via another valve.

Central Heating Systems are a worthwhile investment as they have the lowest cost of operation when compared with other types of heating. They also provide you with complete control which is much more than other heating systems can say about themselves.