Regular Boilers
Regular boilers are a type of condensing boiler, you may find regular boilers are also referred to as traditional or conventional boilers.
If you are replacing an older model of boiler, the chances are that you will have a regular boiler. A typical conventional condensing boiler system incorporates a boiler and extended controls, a feed and expansion cistern, and a copper hot water cylinder (usually in the airing cupboard) which is often fed by a cold water storage cistern located in the loft.
Regular boiler systems have more components but tend to have a less complicated design.
Loft space requirements
The header or feeder tank for the central heating system will be in the loft space. The idea is to take water from your cold water system and store it in a small expansion tank. This expansion tank is then used to continually feed water to your central heating system when any is lost.
Airing Cupboard space
The hot water created by the system is stored in a hot water cylinder often located in an upstairs airing cupboard. This is then used to provide domestic hot water through your hot water taps when required.