there was two 12kw units. ground floor and up stairs. underfloor heating only. the units where short of refrigerant and never reaching temp. therefore two units running none stop 24hours aday.going onto defrost every 10 mins and bringing on elec heaters for the tank when on defrost.

as i said it wasnt me or my company that installed these we were brought in by a consultant who was working with the client as the oringal company said there was nothing wrong.