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cathodeRay
cathodeRay
@cathoderay
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Joined: Feb 28, 2022
Last seen: Aug 10, 2025
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Topics: 17 / Replies: 2075
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

Further information: here are some defrosts from this morning, about 50 mins apart, duration 4 minutes. But the problem isn't just the defrost, it is ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Avoid the Heat Pump Villain: Why Low-Loss Headers and Buffers Can Sabotage Your Heat Pump's Efficiency

The problem is, unless I have missed something, is he just asserts system volume 'really helps' with defrosts, which I take to mean it reduces duratio...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Is My Midea Heat Pump Inherently Defective?

I know! I have been working on it for ages! I am reasonably confident my rads are big enough for the design LWT of 55 degrees. I checked and double ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Can you work an ASHP too hard?

I am posting this here (it also on another thread), because I think it is relevant to this thread's title. Last Wednesday I upped the WCC left hand as...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is My Midea Heat Pump Inherently Defective?

@bobtskutter, @iaack - thank you both for you comprehensive replies. I don't in fact think this is the case. Recall the main problem is defective...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Is My Midea Heat Pump Inherently Defective?

I do think you have to be careful here. you really need minute by minute data for the key parameters to be sure of what is going on, and typically, fo...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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