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robl
@robl
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Honorable Member
Joined: Mar 23, 2022
Last seen: Feb 19, 2026
Profile Activity
Topics: 1 / Replies: 211
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Reply
RE: ASHP Consumption

s The rule of thumb I’ve seen has been total yearly kWh/2000 gives the peak power in kW. It works for us- but would give 36000/2000=18kW. Are you ...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Crossed flow and return

Yes, probably it does matter, depending on the rest of your system. If you have a heat exchanger, it's likely using it the wrong way around, which wi...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is your heat pump insured?

There are so many insurance options these days, which I believe most people would be better off without. Bike, phone, washing m/c, heating system, pe...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Stop ASHPs being stolen

Once you've cut out the compressor, will there be swarf in the cut pipes? If it's stored badly, will the sump oil get water in it which turns it to a...

3 years ago
Forum
Buy & Sell
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RE: Best practice during summer?

Correct me if I'm wrong, but is heatmiser an on/off thermostat type controller? Can you describe your GSHP a bit more: Make / model /power? Is it...

3 years ago
Forum
Ground Source Heat Pump (GSHPs)
Reply
RE: What do we need to know before installing a heat pump?

I can't think of a single reason why you would want to operate a counterflow heat exchanger the wrong way around, the inefficient parallel way, in a h...

3 years ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Reply
RE: A beginner's journey into DIY home energy storage - no solar!

@transparent I'm "listening" eagerly to this thread too! We have old 4kWp FIT PV with an MCS form, and I now have dno approval for an additional, ...

3 years ago
Forum
Energy Storage
Reply
RE: What do we need to know before installing a heat pump?

@cathoderay Apols for badgering on this topic about other controls, but do you really have just have weather compensation only running ? As I under...

3 years ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Reply
RE: What do we need to know before installing a heat pump?

[quote data-userid="5190" data-postid="19305" A volumiser in the primary, together with a good insulation of the PHX to reduce delta T to around 1C m...

3 years ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Reply
RE: What do we need to know before installing a heat pump?

@cathoderay With regard to the cycling:Exactly what controls do you have? I understand you have a manufacturers weather compensation system, and T...

3 years ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Reply
RE: What do we need to know before installing a heat pump?

A few ideas to consider: The ashp is outside - no doubt it's measuring produced power at the unit, so will include any pipe losses that the oil boil...

3 years ago
Forum
Government Schemes, Regulations, Training, Planning & Organisations
Reply
RE: DIY Heat Pumps.

"Natural" gas is effectively an unlimited supply of highly flammable material - and so is super dangerous! Our R290 gshp is outside (tick!) and use...

3 years ago
Forum
Air Source Heat Pumps (ASHPs)
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