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Johnmo
@johnmo
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Noble Member
Joined: Jan 25, 2023
Last seen: May 24, 2025
Profile Activity
Topics: 2 / Replies: 543
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RE: Determining correct flow rate?

Yes, but that is thinking like gas boiler logic, not heat pump logic, you need as low a flow temperature as possible. Also the further you are away fr...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Are you planning to use a wood burner to supplement your central heating this winter?

Exactly the same rules, with a different badge.

8 months ago
Forum
Wood Burners, Biomass, Small Scale, Biofuels & Other Heating Alternatives
Reply
RE: Are you planning to use a wood burner to supplement your central heating this winter?

There are rules on how wood is sold, small quantities have to be dried to a defined level before being sold. Larger quantities, as stated, can be self...

8 months ago
Forum
Wood Burners, Biomass, Small Scale, Biofuels & Other Heating Alternatives
Reply
RE: Determining correct flow rate?

There is a video from heat geek about optimal settings for DHW. To get best CoP it more about the cylinder coil being able to strip away as much energ...

8 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Is the Grant controller a thermostat?

Go on google (or other) and find and download a Chofu R32 installation manual. Everything you need to know will be in there.

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: How loud are the sound levels of internal components like water heater, buffer tank, etc. in an air source heat pump set up?

Ask why you need it? You should be running an open system, so just one zone, so no need. No buffer means no secondary internal pump, which could add n...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: ASHP added to Biomass System?

My view Make sure you heating system can run at a low temp, ideally the lower the better. Get a separate DHW heat pump suitable unvented cylinder,...

9 months ago
Forum
Wood Burners, Biomass, Small Scale, Biofuels & Other Heating Alternatives
Reply
RE: Two possible heat pump routes - how to evaluate them?

But sorry I am not buying it. We are not talking rocket science here. Matching a heat source to heat demand isn't hard (yet many companies still overs...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Two possible heat pump routes - how to evaluate them?

Why pay an installer company to rip you off and hide behind a grant. Then pretend they are giving you a great deal. You can DIY an ASHP install for a...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Determining correct flow rate?

Nothing is straight forward, delta T will change depends on which way you heat, for example radiators will take a wider dT than UFH. Example Targe...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Energy tariffs and consumption fiddling to make my heat pump more cost efficient.

Would not bother wasting your time, every house is different, what's right for next door may not be right for you. Start point is Minimum allowed...

9 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Energy tariffs and consumption fiddling to make my heat pump more cost efficient.

Make sure you can adjust once the plumber has gone, so get him to walk you through the settings

9 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
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