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DavidAlgarve
@davidalgarve
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Joined: Dec 1, 2023
Last seen: Aug 24, 2026
Profile Activity
Topics: 43 / Replies: 205
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Reply
RE: Hot water circulation

Thanks Ian. The type of purpose-made unit I have in mind is on many YouTube videos and is fitted with T's into the hot and cold supply under the sin...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
Hot water circulation
3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 4
Views: 2091
Reply
RE: Slash Your Heat Pump Bills Overnight

The maths attached to a cost analysis of this approach sounds daunting. It seems to me that there are two variables that would need to be evaluated...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

Thanks Gary. That is a new, and interesting bit of inside information that I am pleased to learn. I think this may be useful in balancing the radiator...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

I am finding that this topic is becoming more complicated than I can handle. As I understand the Ecodan Hydrobox, it has a single pump with 5 speeds...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

Derek M is correct in that the Ecodan has a 5 speed pump and this is currently set at max of 5. I was just hoping for a meaningful measure of performa...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

By "taking the buffer tank out of circulation" I mean removing the secondary pump and using the buffer tank just as a volumiser

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

Thanks JamesPa - have only just picked this up. I have the contractor visiting who is primarily a solar installer but he added the DHW system and I ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

Thanks Derek M for the further update. I have approached the contractor that installed the DHW system (including the 3 way valve) and he will make the...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

@derek-m You would be most welcome and 3 bedrooms available. I would consider it good value!

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

I am most grateful to both Derek M and JamesPa for their advice, and I would just like to confirm how the tank is used as a volumiser, only in the ret...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Secondary pump speed - how much slower should it be?

Hello JamesPa. The contractor I employed, seemed to know what he was doing (and I was desperately trying to escape from LPG at a time when the price w...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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