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Crimson
@crimson
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Joined: Jan 16, 2024
Last seen: Nov 13, 2025
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Topics: 4 / Replies: 279
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RE: In general - are shorter hotter cycles more costly or longer cooler cycles?

Thanks James. I'll keep experimenting. I suspect a spreadsheet that supplements the WC reckoner someone made (apologies every time forget who it was...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
In general - are shorter hotter cycles more costly or longer cooler cycles?
1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 3
Views: 1048
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Plumber attended today and "balanced" upstairs radiators, didn't check any temperatures or anything, just a case of closing down those closest to ASHP...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Update on this. It irked me that the plant room pump had to be on 1/3 not 2/3 so reached out to plumber and asked if the Grant ASHP speed had changed...

1 year ago
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Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

It seems opening them back up does reduce the temperature. Which makes me wonder if the rate at which the water passing through is too fast? Certain...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Out of interest, does anyone have an idea why in the hottest performing room, turning the rads down (basically closing down the lock shield equivalent...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

So now I’ve come to the conclusion the rads are now correctly sized (did hope so as according to calcs they’d be very much oversized, just purely phys...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Going to be a struggle, already complaints upstairs is too hot at 19-20C. Ive now had to turn all the hidden Drayton balancing down to 2/6. And have t...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Thanks James, it’s a 13Kw. It’s definitely cycling. Only difference this time is hits 20c rather than 18.5c after radiator upsizing was done recentl...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

Thanks James, I do wonder about that LLH. It appears the challenge Ive always had still remains. The Eskimo rads seem to work very well at low tem...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Grant 13kW Aerona3 - issues getting zones to temp

As a summary I had numerous issues with the heat engineers/plumbers on a project that was an extension and full re wire/re plumb and re insulate proje...

1 year ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Grant 13kW Aerona3 - issues getting zones to temp

@kenbone I’m Suffolk based

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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