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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Sep 13, 2025
Profile Activity
Topics: 17 / Replies: 2837
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RE: ÀSHP heat loss - how close to perfect can we get?

Indeed. Based on my own experience and sense of aesthetics I would, if I were doing this all again, avoid K3s unless the depth is hidden they ca...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

Listen to Barry about 3 mins into the latest podcast (awkward buildings) - he installs in Scottish retrofits and basically seems to be saying that the...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Renewable Heating Hub Homeowners' Q&A Podcast

Excellent, fun episode. Its interesting what Barry says about the problems with the way we measure heat loss and the inaccuracies in assumed air cha...

11 months ago
Forum
Introductions, Forum Rules & Updates
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RE: ÀSHP heat loss - how close to perfect can we get?

If most of your rads are K1s then upgrading to K2 double finned should bring the required flow temp down materially without compromising appearance. ...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

It would be interesting to get to the bottom of this but I suspect needs quite a lot of houses and certainly is not a priority. The average house con...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Mercury Energy Summit (with Greg Jackson on the stage)

If the product is free (or cheap) YOU are the product. This is worth remembering.

11 months ago
Forum
Government Schemes, Regulations, Planning & Organisations
Reply
RE: Samsung / Worldheat buffer mixing

How frequently do you get defrost cycles (I ask because if the answer is not very, it really doesn't matter).

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung / Worldheat buffer mixing

Apologies, this was the first time I had heard an argument for putting it in the flow, and the arguments for putting it in the return seem (and I thin...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung / Worldheat buffer mixing

That's an interesting angle not previously mentioned anywhere I have seen. Is it perhaps a positive reason for a volumiser?

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

R290 scops appear to be broadly similar to R32, there may be a small systematic difference which someone else can doubtless comment on. The only rea...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Samsung / Worldheat buffer mixing

@heacol That is a nice set of diagrams thanks for posting. Why volumiser on the flow not the return? I thought the usual advice was the latt...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ÀSHP heat loss - how close to perfect can we get?

Rads are actually pretty cheap, however, funny you should ask as only a couple of days ago i knocked up a quick spreadsheet to work out the business c...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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