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GrahamF
GrahamF
@grahamf
Member
Estimable Member
Joined: May 2, 2025
Last seen: Apr 20, 2026
Profile Activity
Topics: 6 / Replies: 115
AllTopicsReplies
Reply
RE: Sizing - Save me from my headache

If you have enough space, you might consider opting for a larger hot water cylinder. That would reduce the risk of running out of hot water. However...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Seeking Help for In-Principle Quote to fix a botched heat pump installation by Heat Geek Installer

@drei your proposed radiator design looks inadequate to me. The first and second floors look OK, but a shortfall of 59% on the ground floor at 45C is ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat Pump Installers: Competence, Illusion and the Hard Truth Homeowners Must Face

@editor like @jamespa, I had a list of test questions: What SCOP will you design for? Can you show me evidence of achieving that SCOP on your ins...

7 months ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Reply
RE: Heat Pump Installers: Competence, Illusion and the Hard Truth Homeowners Must Face

@ashp-bobba I agree that as an installer you probably don’t want to be the cheapest. There is plenty of work out there. If you charge more, you can ...

7 months ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Reply
RE: Seeking Help for In-Principle Quote to fix a botched heat pump installation by Heat Geek Installer

@drei in your original post, you said: Did the Heat Geek Elite engineer give you a design within the £800 fee, or did he just tell you everything t...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Why does an ASHP provide a more comfortable environment than a gas boiler?

@majordennisbloodnok I read the document that you shared: "Get_to_know_your_Cosy-20.2-internal". It looks as though it automatically adjusts the wea...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Why does an ASHP provide a more comfortable environment than a gas boiler?

@andrewj this is an interesting discussion. I am curious to understand why you are asking the question. You already have a heat pump, so surely you ...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Testing new controls/monitoring for Midea Clone ASHP

This really depends on your heat loss and emitters. My installer and I seem to have been too pessimistic about the heat loss and maybe overshot on ra...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Repiping and Reconfiguring our Heat Pump System Including Removing the Buffer Tank

@heacol thanks for explaining. We have FRVs on most radiators. We have TRVs in the bedrooms instead, but they are all wide open. The temperature i...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How to choose Towel Rails for an ASHP

@judith Yes I agree. They are extremely expensive. I suspect they sell very few of them, so they don’t have the economies of scale of standard rad...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Repiping and Reconfiguring our Heat Pump System Including Removing the Buffer Tank

@heacol this may be a silly question, but why would you need a second pump? The water pump in my Grant Aerona 290 15.5kW is happily pumping the wate...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Repiping and Reconfiguring our Heat Pump System Including Removing the Buffer Tank

@editor Yes, we all suffer from the Dunning-Kruger effect. It is so easy to think we understand something, when we don't - especially when it looks...

7 months ago
Forum
Air Source Heat Pumps (ASHPs)
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