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JamesPa
JamesPa
@jamespa
Moderator
Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 8, 2026
Topics: 27 / Replies: 5219
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RE: Cosy 12 or Grant Aerona 15.5?

There is onl,y one system currently on heatpumpmonitor that is both under 200 sq m and have a measured heat demand of >9kW at the design temperatur...

5 months ago
Reply
RE: Cosy 12 or Grant Aerona 15.5?

@glacken With 3 years on this forum, I am immediately suspicious whenever I read a surveyed heat loss greater than about 9kW, unless its for a mansi...

5 months ago
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RE: Any thoughts on control strategies for heat pumps?

There is essentially no doubt that operating heat pumps on well adjusted weather compensation, is, in the vast majority of cases, the way to go. In s...

5 months ago
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RE: Domestic wind turbines

For a couple of years b&q sold one, but then stopped I presume because no demand. They are quite popular for narrowboats see eg/p>  

5 months ago
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RE: Cosy 12 or Grant Aerona 15.5?

That's a big or rather lossy house. How certain are you that this is correct. Do you have any existing consumption figures to act as a sanity check,...

5 months ago
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RE: Heat Pump Books For Beginners – The Ultimate Guide to Heat Pumps, Bodge Buster & From Zero To Heat Pump Hero

If you are prepared to take out a buffer/LLH (or replumb it as a volumiser) and disable third party controls (which is generally possible with appropr...

6 months ago
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RE: Any thoughts on control strategies for heat pumps?

Experimentally I dont think thats the case - I, and many others here, have radiators, use WC with no room influence, and find it much more comfortable...

6 months ago
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RE: Rate the quality of your heat pump design and installation

Thats sadly very unusual in the UK so far as I can tell; you were very lucky. Most boilers (again so far as I can tell) are slapped in, flow temp t...

6 months ago
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RE: Rate the quality of your heat pump design and installation

Just to comment on this, if you get the adjustment right, your house should be more comfortable, possibly much more comfortable, with a heat pump than...

6 months ago
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RE: Heat Pump Books For Beginners – The Ultimate Guide to Heat Pumps, Bodge Buster & From Zero To Heat Pump Hero

That sounds like an 'opportunity' for a breed of 'no win, no fee' optimisers who partner with lawyers to sue the installers of faulty systems.

6 months ago
Reply
RE: Any thoughts on control strategies for heat pumps?

I think that's the problem though. Heat pump reacts but house won't because of its large heat capacity. By the time the heat pump measures a change ...

6 months ago
Reply
RE: Any thoughts on control strategies for heat pumps?

Have you got a minimum flow temp set by any chance?   Apart from this I can't comment as I don't know much about the ecodan autoadapt algorit...

6 months ago
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