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@heacol
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Noble Member
Joined: Aug 6, 2021
Last seen: Jul 27, 2025
Profile Activity
Topics: 3 / Replies: 404
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Reply
RE: How Do Compressors and Frequency Affect Heat Pump Efficiency?

@william1066 It will be great to see the results.

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How Do Compressors and Frequency Affect Heat Pump Efficiency?

@william1066 This is exactly what I would expect to see, your required flow temperature for under floor is very high, the switch on frequency is very ...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
How Do Compressors and Frequency Affect Heat Pump Efficiency?
1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 10
Views: 790
Reply
RE: My horrific Samsung heat pump installation and experience

The Samsung pulse width modulation output does not work at flow temperatures below 45 Deg C, why? It is anybody’s guess.

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ground source heat pump is unaffordable to run

@gshpwoes Unfortunately, from looking at the pictures, and the components used, you more than likely have a serious flow issue.

2 years ago
Forum
Grounds Source Heat Pump (GSHPs)
Reply
RE: Ground source heat pump is unaffordable to run

@gshpwoes Cold radiators, you more than likely have a flow problem, unfortunately it sounds like the system is micro-zoned and more than likely has a ...

2 years ago
Forum
Grounds Source Heat Pump (GSHPs)
Reply
RE: Rethinking High-Temperature Heat Pumps

@JamesPa, I wrote the original text and did the original analysis to show that high temperature heat pumps are not the panacea they are portrayed to b...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

@bontwoody mmmm theory is a wonderful thing, but rarely follows through in to practice. You are only looking at a very small piece of the puzzle. Unli...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

@bontwoody it is easy to get SPF's above 5 in ANY house, including old draughty solid stone buildings, I have hundreds to prove it. Get the design and...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

@bontwoody and @william1066 No problem if you are happy with an SCOP of 3 instead of 5 or 6.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

@bontwoody I agree, but the fundamentals of design and sizing for best performance requires experience and knowledge. A DIY installation, may work bet...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson You do not stand a chance of getting any reasonable performance with your current system design, regardless of heat pump installed. You have ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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