The best deals aren't that easy to find, so all the best prices for boilers are here and Cheap-Boilers-UK.co.uk already laid out for you to compare.  The boilers have been divided into Combi Boilers, System Boilers and Open Vent Boilers for your type of central heating system.  Most customers will now opt for a Combination boiler as it delivers on-demand hot water, rather than having to heat water and keep it in a hot water cylinder all day.