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@editor
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Illustrious Member
Joined: Feb 11, 2021
Last seen: Aug 22, 2025
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Topics: 305 / Replies: 3082
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RE: Air source heat pump performance

@derek-m, I don't how the tank is built but I think that they have separate compartments.

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air source heat pump performance

If you have pipes running to the bottom your hot water cylinder (I've attached a photo) you probably have a buffer tank there.

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air source heat pump performance

@markc, our buffer tank is not visible as it's part of the hot water cylinder - the bottom 100 litres are the buffer tank. If you had a new HW cylin...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: 4 bed detached 1920’s house

You may want to read Sue's Grant experience:/p> She's currently working on an update of their experience and servicing the unit.

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: 4 bed detached 1920’s house

Welcome to the forums @annemolly. You have some valid concerns based on others' experiences, but the reality is that heat pumps do work when they are ...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air source heat pump performance

Hi Sam. How are you guys getting along? Did you ever resolve this issue? I'm gathering by your questions that you're still looking for solutions.

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air source heat pump performance

That is an excellent question. I'd be curious to know the answer to this. And what happens to the buffer tank. Does it just sit there full of water or...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air source heat pump performance

@kev-m, that's super interesting. I didn't know you were buffer-less and that your installer was adamant about this. We had six quotes and each one re...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Air source heat pump performance

@heacol, I can certainly see (based on our debate and interaction) why you wouldn't be liked by the industry. I do, however, respect your perseverance...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: My ASHP installation journey in Monmouthshire, South Wales

@novemberromeo, by the way we did discuss your dilemma in a recent interview (will hopefully be live in the next two weeks) and you settling on the 12...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Vaillant Aerotherm Plus

@witchcraft, sensible approach. I hope you can get it sorted with minimal fuss.

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP in Hampshire

We've set out hot water to 44C - ideal for us, but it will vary on peoples' preference. Always interesting to see.

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
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