Browse Forums Heating, Cooling & Insulation Re: Heating capability of heat pumps in cold climates like H 3Jul 15, 2011 9:23 pm Have you considered a ground source heat pump? The reason that the air source heat pump struggles, is because it is hard to extract heat from cold temps eg -1C to 7C. The ground temperature is probably around 15C to 18C so getting heat from it is much easier. You can expect 400% to 500% efficiency from a ground source heat pump (GSHP) versus 100% to around 400% efficiency for an air source HP and usually when it is really cold outside, the efficiency is at its lowest - exactly what you don't want. You will keep your bills lower and be able to achieve your desired temps regardless of how cold it gets (ground temp doesn't change much even if it is a super cold year). The cons are that it has higher up front costs but if you are confident that you will be living in this house for a long time, it is probably going to end up paying for itself and then save you money while achieving your desired temp. Where I live now, we have gas ducted heating and I would far prefer a heat pump - next place:). Gas is getting really expensive. Depends how much direct sun it gets. Is there any shading (eaves or trees)? If the sun hits a window directly it doesn't matter too much if it's double or single… 1 12647 Hi guys, I want to butt a concrete vegetable garden bed against a concrete build up of a carport. It will be a 700mm high wall about 120mm thick and I will run a 12mm rio… 0 2588 There may be answers here but can't find anything. I have a closed in veranda, four windows. North facing, just had sunblock blinds installed. A bit cooler (actually… 0 2969 |