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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Oct 19, 2026
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Topics: 18 / Replies: 3075
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RE: How quickly would you want/expect heat recovery to take from setback?

Yes, but out of the box a Midea unit can't do this. It can only follow the WCC (or set a fixed LWT, but that defeats a lot of the benefits of running ...

14 hours ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: How quickly would you want/expect heat recovery to take from setback?

I agree it looks like a traditional fossil fuel boiler, modulating using on and off, but it (the slow cycling) is normal Midea behaviour. Others who h...

1 day ago
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Air Source Heat Pumps (ASHPs)
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RE: How quickly would you want/expect heat recovery to take from setback?

Exactly, and this is the point, a heat pump operating normally will not be able to achieve a rapid rise in IAT. In their defence, they are not designe...

2 days ago
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Air Source Heat Pumps (ASHPs)
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RE: How quickly would you want/expect heat recovery to take from setback?

Here's one of my bits of string... Untweaked, most heat pumps will take hours if not days to recover from a setback. This is because they are not me...

2 days ago
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Air Source Heat Pumps (ASHPs)
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RE: Replacing Storage Heaters with a Heat Pump in a Stone Cottage

All very true. Personally I also put a fair amount of weight on my gut feeling after a long enough face to face meeting. I also deplore the 'you gets ...

1 week ago
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Air Source Heat Pumps (ASHPs)
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RE: Replacing Storage Heaters with a Heat Pump in a Stone Cottage

Ah, that explains it. Thanks! Then I agree with others, £18k is on the high side, but I don't think absurdly so, given it presumably includes all...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing Storage Heaters with a Heat Pump in a Stone Cottage

I'm certainly interested in it. I tried to work out how the units in the formula got to what is a single count of watts, but failed. The formula is de...

1 week ago
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Air Source Heat Pumps (ASHPs)
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RE: Replacing Storage Heaters with a Heat Pump in a Stone Cottage

I have just had a look at how the freedom Heat Loss uses and calculates ACH values. The actual values are by default look up values based on room type...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Replacing Storage Heaters with a Heat Pump in a Stone Cottage

The freely available table I linked to just simplifies the calculation to a single multiplication:     As you can see, the correctio...

1 week ago
Forum
Air Source Heat Pumps (ASHPs)
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