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pash44pump
@pash44pump
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Joined: Aug 28, 2025
Last seen: Dec 21, 2025
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Topics: 0 / Replies: 65
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RE: Midea ASHP – how to set weather compensation

This now in answer to my request to provide input assumptions for the heat loss calculations "In the scope document that Sandra shared with you, the...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea ASHP – how to set weather compensation

@jamespa how do you get from usage of 30MWh to loss between 10 and 15?

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea ASHP – how to set weather compensation

@jamespa Ok I have now found all my old oil orders and over a 7 year period, the average amount ordered was 2900 litres. The installer assumed an aver...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

So now I have completed my heat loss calculations and I get a total property heat loss of 12502 against the installer's calculations of 8610. I have u...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea ASHP – how to set weather compensation

@jamespa I woke up this morning (at 4.45am!) thinking about exactly that and I have been looking into the ACH numbers on the Freedom Pumps xls. To me ...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

@cathoderay. I've taken the numbers directly from the Freedom heat loss calculator that I downloaded from your link. This shows a room heat loss (larg...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

So, I have input details into the Freedom Heat Pumps loss calculator and I get the following Lounge - Installer Heat Loss 40 Room Loss 1995 Mine He...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea ASHP – how to set weather compensation

@cathoderay nice one. That's what I was doing when I saw your message. Will revert  

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea ASHP – how to set weather compensation

@benson thank you. I am beginning to see that now and will be changing my approach thanks to what I have recently learned. @cathoderay and others. T...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Midea ASHP – how to set weather compensation

@cathoderay floor plans were in the scope document that I posted 👍

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea ASHP – how to set weather compensation

@jamespa thanks so much. Very useful

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Midea ASHP – how to set weather compensation

To summarise where things stand. The external insulation is totally inadequate and should be completely replaced and I will contact the installers t...

4 months ago
Forum
Air Source Heat Pumps (ASHPs)
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