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@heat-pump-newbie
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Joined: Dec 11, 2021
Last seen: Aug 17, 2025
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Topics: 11 / Replies: 159
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RE: Meaning of ΔT setting in an ASHP

@derek-m I have checked the Sontex version of my COP, having separately recorded the values for DHW and heating cycles. (The benefit of the heat pump ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Meaning of ΔT setting in an ASHP

You could try writing to the manufacturer and ask how accurate the readings on the controller will be. Well I probably won't as that's the least of...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Meaning of ΔT setting in an ASHP

Just out of interest Derek, why do you say the Sontex heat meter would be more accurate than the internal Daikin meter ? I’ve always wondered why they...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Meaning of ΔT setting in an ASHP

No buffer tank - it's quite a simple setup with 7 radiators.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Meaning of ΔT setting in an ASHP

@derek-m I can calculate the COP in two ways: on the Altherma 3 controller I can look up Information>Energy data> and get cumulative consu...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Meaning of ΔT setting in an ASHP

Ah yes, those were the days! I saw the Heat Geeks were also firing up smoke bombs simulating a cold well at hghq, so it’s not just me 😬 I can only a...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Meaning of ΔT setting in an ASHP

Hi Derek. I have a further question to this topic if you don’t mind me butting in… My Daikin (still a mystery to me in many respects) has been runni...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air to Air heat pump for a flat ? An improvement on Electric Ceiling Heating.

Thanks Derek. That's a very neat looking unit - much smaller than my Daikin. I don't think that would offend anyone ! Particularly if it was on a whit...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air to Air heat pump for a flat ? An improvement on Electric Ceiling Heating.

Yes - that's a very fair point @hughf - what a shame they can't look unobtrusive ! Though I still would like to see one. The ceiling heating in the ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air to Air heat pump for a flat ? An improvement on Electric Ceiling Heating.

@derek-m please can you post a photo of your A2A heat pump outdoor unit ?

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Air to Air heat pump for a flat ? An improvement on Electric Ceiling Heating.
3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 14
Views: 3061
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RE: Tips on How to Get Your Home Ready for Winter to Lower Bills

I’ve read a bit more about this. They charge for a survey (not too much) so they can check everything about the space under your floor, and give an ex...

3 years ago
Forum
DIY
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