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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Sep 9, 2025
Profile Activity
Topics: 17 / Replies: 2813
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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)
Reply
RE: Fitting emitters with output greater than room heat loss.

If the objective is to operate without trvs then rads need to be balanced so that the rooms are at the same temperature (or deviate from the same temp...

9 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Fitting HP pipes in advance?

OK so it sounds like you have a vented DHW system all the heating pipes converging in the airing cupboard You are almost certainly going to w...

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

If they are all above the required heat loss by about the same amount, you simply turn down the flow temp! If some are 'oversized and some not, it mi...

9 months ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Fitting HP pipes in advance?

Definitely try to fit the pipework now, pushing it through conduit isn't likely to be very practical unless its large conduit without bends. Can I as...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Anyone have experience with Clivet? And monoblocks vs Splits?

Clivet is, I believe, Midea rebadged. There are several on here with Midea heat pumps who may be able to comment. They are not the most advanced in ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The UK’s Heating Nightmare: Why Many Systems Fail Homeowners

Based on this discussion it's pretty convincing that this can't work for the nation if run as a business, which of course doesn't mean that it's techn...

9 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: The UK’s Heating Nightmare: Why Many Systems Fail Homeowners

Thanks. The profit motive defeats us again. Is this beginning to feel like an argument for a nationalised system managed in the interests of the ...

9 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Page 127 / 237
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