My existing convential boiler and rad system needs replacing and I want to do it this Summer while we can cope with heating down time in the house.
House is 3 bed semi. 1 bath, 1 shower, 11 rads. Has a floor area of
100 sq.m and has an existing hot water flow rate of 14 l/min.I want to go the combi route and also want to replace the rad system with underfloor heating (UFH). I have made initial enquiries about boilers and the range of prices is mind boggling.
My main questions are:
1) Will UFH work OK with combi boilers? I have noticed even some of the cheaper boilers have functionality to be able to turn the central heating water temp down to 40C. Would I still need a mixing valve in this case?2) I was thinking of going for a 30KW combi but initial quotes I have got (just for boiler) range from =A3700 - =A32000. If I paid more for the higher end boiler I realise that I would be getting a higher quality, more efficient boiler with a higher flow rate, but I would be keen to find out from others about how their combi boilers perform, particularly anyone out there who is using theirs with Underfloor heating.
Thanks in advance.