Boiler & Hot Water Systems

Knight Heating Solutions can service and install both open vented and unvented hot water systems, as well as modern combi boiler systems. 

An open vented hot water system has two tanks, a hot water storage tank and a cold water feed tank located at the highest point, which is usually in the loft. Open vented heating systems were used for many years, up until the 1980’s when combi boilers were introduced. They are usually found in older propertues but are prone to some issues and they also can't work in conjuction with a combi boiler so you would have to update your entire system when changing from an older gas boiler to a newer combi boiler.

An unvented or pressurised hot water system is fed directly from the mains water supply and therefore has a higher pressure. This system has no reliance on a tank in the loft to cater for expansion and venting, hence the name. The system works by taking cold water directly from the mains water supply and heating it within the unvented cylinder, then storing it until required. The water can be heated by various methods including immersion heaters, gas boilers or increasingly by heat pumps, solar or other energy efficient methods.

Whatever system you have, we can maintain and repair it or install a new system if the old one is no longer fit for purpose.