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Brendon Uys
@heacol
Contributor
Prominent Member
Joined: Aug 6, 2021
Last seen: Oct 1, 2025
Profile Activity
Topics: 3 / Replies: 411
AllTopicsReplies
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
Ground 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)
Reply
RE: Need ASHP advice for old (1882) stable development in SW Scotland - where do I begin?

@alan22 PM me and I will see what I can do, a lot of information needs to be gathered for a satisfactory outcome, it is not as simple as just throwing...

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

@crimson The fault is at Grants and MCS's door, the installer was, I presume, trained by them, I think you have every right to legally demand that you...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Depths for GSHP slinkys

@windyinsancreed At least 1.2 to 1.5 meters and straight pipes at least 1meter apart, the deeper they are, the less effect the weather has and the bet...

2 years ago
Forum
Ground Source Heat Pump (GSHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

@crimson Hi, Been dragged in by @editor 😀 I have not had time to read the whole thread, but, from what I can see, it is a typical Grant d...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Rethinking High-Temperature Heat Pumps
2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 8
Views: 999
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