Sealed or Vented Central Heating Systems
Sealed or Vented Central Heating Systems
Before you purchase a central heating system you need to picture what form of system and heating boiler you will require. To help you picture the choices available we will outline the main variants of system. The main component in a central heating system is the gas boiler and this will be selected in accord with your needs.
Air conditioning systems are not yet a usual feature in households whereas every northern European dwelling is built with a form of central heating. The majority of new houses that are being built in this day and age are built with a Central Heating System.
Heating is vital, particularly in wintertime. Heating your home provides a restful and cosy atmosphere. Another essential role for the central heating system is to create hot water. You need heating and hot water every day so you need a system that you can depend upon. Out of sight daily operation without unexpected breakdowns is a standard requirement of any central heating system.
Pumped systems and sealed central heating systems are the two main forms.
The pumped/vented system is most often seen. A feed and expansion tank is incorporated into this type of central heating system alongside a hot water cylinder. The tank makes way for any water expansion that is caused by the heating process. The loft is most normally used to house the expansion tank as it needs to be high in the house.
A slightly newer, more up-to-date system that several people are choosing over a pumped/vented central heating system is a sealed system. 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 gets its water direct from the water mains. This frees your attic of the expansion tank and pipework, the whole system is sealed, its unvented, which has its benefits:
- frozen winter copper piping from copper pipes in the loft it is now eliminated
- your upkeep requirements are reduced as there are fewer constituents
- less pipework and seals to leak
- as the system is sealed there is less chance of air introduction leading to corroding or airlocks
Normal fluctuations of pressure can be permitted in a sealed system through a pressure vessel that contains compressed gas. Safety valves open if the interior pressure is too high. Other automated valves open to allow the inner water to be topped up if it drops to low.