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IaAck
@iaack
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Joined: Mar 8, 2023
Last seen: Jul 24, 2025
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Topics: 0 / Replies: 39
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RE: ÀSHP heat loss - how close to perfect can we get?

Are you saying then + or - 10% or + or - 5% I note that the tolerance for ashp ratings (EN14511) are: Tested cooling and heating capacity ≥ 0,88...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: ÀSHP heat loss - how close to perfect can we get?

How close to the true heat loss figure do we need? Is it actual heat loss + or - 20%, ....?or more likely heat loss - 0 to +40% Or heat los...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Samsung Gen 6 outdoor unit - what is the colour code?

Possibly RAL7035? Try matching using the attached colour chart

10 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Book: Not Zero

@jamespa a) yes, most probably b) yes, it's a trait we humans have c) a sweeping statement and that's the bit I find very hard to agree with.

10 months ago
Forum
Well & Truly Off The Grid
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RE: Book: Not Zero

@jamespa Exactly! The book is about the political response....the science is not in dispute.

10 months ago
Forum
Well & Truly Off The Grid
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RE: Book: Not Zero

@judith Its a political subject. You have to ask yourself just how many Labour supporters would give a glowing review on a Tory manifesto? And how man...

10 months ago
Forum
Well & Truly Off The Grid
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RE: My horrific Samsung heat pump installation and experience

I have always thought the volumiser should be plumbed in series with the secondary heat exchanger and not in parallel with it (as shown in @iantelesco...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

@cathoderay I would suggest you investigate the power requirements of your circulating pumps and subtract that figure from your daily energy in calcs ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

@jamespa Would you kindly but briefly explain the term "degree minutes per day" and how they relate to heat pump running costs. Also why no mention in...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

@cathoderay I'd be interested to know if your controller is set to max power, intermediate, or quiet mode. It would be enlightening to understand how...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Twin ASHP Operation - Question

@dunlorn Given your current observations on your. system I would be very tempted to increase the WC settings on the slave unit 1 or 2 degs higher than...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Do setbacks save energy without compromising comfort?

You required a modeling tool to answer the questions. IAT 10 Avg. 15 20 PI 10644 74262 ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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