Mr Q wrote: »
I have a heat pump with underfloor and set the max flow temp to 30 degrees. It never has any issues getting the rooms up to temp, although i would never set it as high as 21 degrees.
If the title didn't say new build i would wonder if the pipe spacing was set for oil and the house later added a heat pump.
What make and model is the unit?
murphaph wrote: »
You don't really set a desired temp with a heat pump like a boiler so I don't understand what the plumber told you. 34 degree flow temps are very high for a new build.
You need to adjust the heat curve at various outside temps until it is running as you like.
It could simply be that if is colder now and your heat curve is not well adjusted in this temperature range.
annubis wrote: »
well i dont know anything about the topic but on the main control panel of the unit there is a desired temp setting which you can adjust up and down, been told it should be at 35 degrees which seems to have kicked system into life