By: ryan

ryan — Mon, 10 Aug 2009 18:02:21 +0000

i’ve been looking into this option recently and seriously considering installing it. i had been planning to install solar hot water heating and had purchased a twin-coil cylinder for this but found arranging an installer to a remote location to be troublesome so was just going to use the cylinder with the gas boiler alone until a later date… now i’m thinking the lower coil would be handy for making use of an air source heat pump at night on economy 7, maybe also tying in the towel rail for the bath room in the loop.
since there are companies selling air source heat pumps for loft installation, such as triancos activair units, it must be achievable. the limiting factors seem to be making sure you have at least 250mm loft insulation (to ensure that the cold loft doesnt encourage heat loss from your home) and sufficient ventilation so that the cold air can be exchanged (i’m guessing if the air can move freely enough the temperature shouldnt drop much lower than the outside temperature). personally the only concern i have is whether or not the natural ventilation would be sufficient, i do wonder if a low power extractor fan may help prevent the loft space getting too cold… perhaps fitted to a thermostatic switch

By: jon

jon — Mon, 13 Apr 2009 20:03:34 +0000

can you fit an air source pump in the loft? i have seen plenty of claims that you can and also plenty that you cannot. the reasons given for not being able to do this is 1) beacuase of noise (not too worried about this) 2) the ashp gives out cold air so the loft will soon become very cold (limited air) and thus making the ashp not very effecient. i want to install a 12kw ashp. my loft space is quite large (40ft X 40 ft X 8ft) and has good ventilation. any comment would be greatly appreciated. thanks

Comments on: How does an air source heat pump work?

By: ryan

By: jon