Combination (Combi) Oil Boilers
Combination boilers (Combi) provide hot water on demand, heated as required with no water storage. They heat your radiators when activated by a controller or programmer similar to standard (or conventional) boiler systems. Combi boilers dispense with the need for the hot water cylinder in the airing cupboard, the large cold water cistern (tank) plus small header cistern (tank) in the loft which are otherwise needed in conventional vented heating systems.
All the major components are housed in one unit which makes them very convenient to the installer and saving space for the householder.
Combi boiler systems are generally suitable for smaller households, flats and bungalows where with a smaller number of users with modest heating and hot water demands. Although the latest combination boilers can also suit larger households, in some instances it is down to personal preference.
Condensing Oil Fired Boilers
These types of boilers are available as high efficiency, energy saving condensing boilers. Condensing boilers are designed to recycle heat with an extra heat exchanger so that the hot exhaust gases are used to pre-heat the water in the boiler system, therefore reducing energy consumption and bills.
Condensing boilers cost a little more but the energy savings will repay that extra initial investment in 2 to 4 years of normal use.