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Prunus
@prunus
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Estimable Member
Joined: Apr 6, 2021
Last seen: Oct 26, 2025
Profile Activity
Topics: 4 / Replies: 60
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Reply
RE: Two interesting hydrogen graphics

I came across this video: This is the perspective of, shall we call them, 'Big Boiler'. They take the position that they can build hydrogen boil...

4 years ago
Forum
Well & Truly Off The Grid
Reply
RE: Please don't shout at me! Electric boiler vs ASHP

It's also worth mentioning that heating in flats is a bit different from houses, because in flats you often have a lot of walls and floors that are he...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP manufactures (NIBE vs Grant)

Interestingly, I think I figured out that Grant are rebrands of Chofu of Japan - the diagrams in the installation manuals are identical. I'm not fami...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Lay person looking from the outside in

Hi Mark, if you already have a plumbing background I can recommend the training videos from Freedom Heatpumps: Most of what they describe are Monobl...

4 years ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: ASHP manufactures (NIBE vs Grant)

I too am wondering this question - in this case Grant v Mitsubishi. The installer says Grant 'is the better product' which could be installerspeak fo...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are air source heat pumps overpriced in the UK?

@julianc Absolutely, I'm not really suggesting this as a feasible option for a lot of people. For other thing, the RHI and friends have a list of 'ap...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are air source heat pumps overpriced in the UK?

I posted this on another thread - from Alibaba: 11kW ASHP monobloc - $838 Heat pump water cylinder - $286 Radiator-style fan coil unit - $125 (i...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: The ASHP industry is not helping itself.

On costs, I've recently been spending some quality time on Alibaba. Typical examples (clickable links): 11kW ASHP monobloc - $838 Heat pump water...

4 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Smart Home Tech

@derek-m Yes, going for the classic industrial control route is one option. There's a certain merit to hardwiring in valves and sensors and running t...

5 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Smart Home Tech

I can't help but feel this is all a bit primitive. We have a mishmash of control systems all fighting against each other. For example, the heat pump...

5 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Reply
RE: Low temperature radiators

@kev-m I haven't tried running rads at 50C as the old oil boiler is very unhappy if the output temp is set below 70C. I'm just curious whether there a...

5 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Topic
Low temperature radiators
5 years ago
Forum
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Replies: 2
Views: 2365
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