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JamesPa
@jamespa
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Illustrious Member
Joined: Apr 3, 2023
Last seen: Aug 19, 2025
Profile Activity
Topics: 17 / Replies: 2696
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RE: Say hello and introduce yourself

@matwin This post is a real world example of the effects of oversizing and buffers. It's worth reading it and the subsequent discussions.

3 months ago
Forum
Introductions, Forum Rules & Updates
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RE: Say hello and introduce yourself

My gas consumption was 18-20MW/yr. It was 10% higher before I turned down the flow temp to 50 (from 75 which is where the maintainer left it) and sta...

3 months ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: Ripped Off: How UK Homeowners Are Paying Gas Prices for Wind Energy

That's a curious conclusion with which I am struggling, not least because I have a fairly comparable situation which doesn't seem to create a conflict...

3 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
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RE: Say hello and introduce yourself

I don't have much concrete evidence but The only way to explain the discrepancy between my calculated and actual heat loss is to assume ach =0.5 i...

3 months ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: Say hello and introduce yourself

In addition to the above oversizing means you are likely to be running the compressor at an inefficient point on it's modulation curve for much of the...

3 months ago
Forum
Introductions, Forum Rules & Updates
Reply
RE: Ripped Off: How UK Homeowners Are Paying Gas Prices for Wind Energy

I don't disagree for a minute with some of the sentiments about gas prices vs electricity etc but, to add some balance to the argument: My heat pump...

3 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

If your statement were 'WC doesn't work in your house' then it might be true. As it stands, apparently intended to be generally and widely applicable...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Ripped Off: How UK Homeowners Are Paying Gas Prices for Wind Energy

Very well said. When people complain about 'the council's or 'the government' I've taken to asking them 'so what would you do instead then?'. Mostl...

3 months ago
Forum
Electricity, Tariffs, Monitoring & Providers
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

I find it faintly amusing that nobody ever worries about a heat pump cycling more or less continuously when it's their fridge, but gets extremely conc...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

You are right that the lag from when the heating controller responds to when the house responds is of course the same whether the controller responds ...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant Aerona3 - Home Assistant control via Modbus

This is how I would set it up Firstly a WC curve tuned to house. Start at 20 Deg outside and min flow temp of heat pump 20 or 25. End point at your...

3 months ago
Forum
Air Source Heat Pumps (ASHPs)
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