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JamesPa
@jamespa
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Joined: Apr 3, 2023
Last seen: Sep 12, 2025
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Topics: 17 / Replies: 2832
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RE: Difficult positioning of air source heat pump

Landing windows dont count so calcs are based on the nearest window to a liveable space Covers are an option but if the calcs say that its OK noi...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Fitting heat pump plumbing and pipes in advance?

I think thats what I meant by the suggestion to fit an electric element to a towel rail?

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Difficult positioning of air source heat pump

@rikiarn I agree with @allyfish that this is a difficult one. I spent ages contemplating locations for mine, mentally going through all the options ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Fitting heat pump plumbing and pipes in advance?

That is what I originally planned, then I fell back to 'ignore and rely on heat from adjacent room and steam when the bath is in use.@ The TRV will ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Fitting emitters with output greater than room heat loss.

I don't think that Vaillant are special in any major way, they are one of a number of well-reputed manufacturers all of which reportedly produce good ...

9 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
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RE: Non standard houses with non standard owners

Its not quite as simple as that Unless the insulation between rooms is very good, or the insulation between the house and the outside world very bad...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Fitting heat pump plumbing and pipes in advance?

One more thought if you are doing a bathroom refurb and planning a heat pump later - towel rails are basically more or less useless for heating when r...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Fitting emitters with output greater than room heat loss.

The proof, of course, will be in the heating! My ASHP was fitted two weeks ago sized based on two years measurements of gas consumption and assumpt...

9 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Which system is most efficient...

OK. Im not going to be able to answer the question, but can give you some pointers. Others may chip in. Forget the idea of a 100l buffer tank to...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Fitting heat pump plumbing and pipes in advance?

You are right about 35mm, my mistake. The D2 can certainly go through the wall assuming that the porch doesn't conflict given the levels (look at...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Fitting heat pump plumbing and pipes in advance?

I wouldnt disagree with this! No. The pipe is carrying pressurised hot water (it could be as hot as 70C in a legionella cycle) so it needs t...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Which system is most efficient...

First question, where does 16kW come from. It's a big loss even for a 220sq m house unless its poorly insulated or it gets very cold, which it may de...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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