RedGage

 Whatever type of boiler you're thinking of buying or if you just want to find out more about the one you have, our boiler guide will help. When chosing which boiler is best for your home, you first need choose which type. There are three main types of boiler: combi, system and conventional. Combi boilersSystem boilersConventional boilersCondensing boilersEnergy-efficient boilersCombi boilers Combination boilers - more commonly known as combi boilers - are the most popular kind in the UK and provide heat and hot water with no need for water tanks or cylinders. Prosyou get unlimited heat and hot water when you need it.there's no need for a tank in your loft.they don't take up much space.ConsThe water pressure might be reduced if you need hot water from more than one tap at a time.Suitable forAlmost any home, but best for homes where lots of people won't need lots of hot water at the same time.System boilersSystem boilers - also known as sealed system - come with a water cylinder (which usually sits in an airing cupboard) and no water tank. http://www.uswitch.com/boilers/guides/boiler-guide/