21-06-12, 12:41 PM
as a gas fitter myself, i would recommend the combi option (preferably with an electric shower, just in case your hot water fails in the future), a direct replacement will be easier to fit,but with a combi you lose all of your tanks and hot water cylinder etc . Possibly making some extra storage space,and also losing a lot of pipework and wiring. Also i would recommend a wireless room stat. Combi boilers nowadays are extremely reliable and offer high hot water flow rates. Unless you live in a large house 4 beds+, with en-suites ,and with a extremely high useage of hot water (several people showering at the same time etc),then a combi is the way to go. Hope this helps.