I need to replace the central heating in my house as part of a full renovation. Currently have an ancient gas Rayburn which is only used for heating as the cooker is defunct. The architect has suggested an air heat pump and underfloor heating downstairs. I will not be having the air pump as I am on mains gas. However, underfloor heating sounds interesting as apparently it is more efficient and cheaper to run.
I have been told it's meant to be left on all the time. But surely it would make rooms too hot during a hot Summer (if we ever have one again!). And if you turn it off it takes ages to warm up again. Isn't it more expensive to have it on all the time? I don't have any experience of this type of heating and none of my friends have it. I will be improving my house's insulation at the same time.