If you are looking for a space saving solution or are living in a flat or small house and do not have the space for a large heating system, then this will serve your purpose. As this is a combination boiler all you must do is install one appliance. There is no need to install a hot water cylinder or water tanks. This instantly gives you hot water along with giving you sufficient pressure to you hot water taps as well along with heating your home.

Unvented Hot Water Systems is a two-appliance system. It includes both a boiler and an unvented hot water tank (normally located in the airing cupboard). Ideal for a bigger space or a home with a large family as it allows you to use two hot water taps at the same time without compromising on the hot water pressure. Also, can be used in homes with a low water pressure.

Conventional Boiler System is a system that uses three or more appliances and is used for bigger spaces as it requires more than three appliances which include a boiler, hot water cylinder and tanks in the loft.

This system is a little more complicated and uses two open header tanks in the loft. For the heating purposes a pump outside the boiler is used to pump waters in the radiators. This system has a drawback which includes low water pressure at the taps nearest to the loft tank and therefore other heating systems are more popular than this.