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newhouse87
@newhouse87
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Joined: Mar 15, 2023
Last seen: Jan 5, 2026
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Topics: 2 / Replies: 232
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RE: Heat pumps and on/off working - starting to quantify it

Hi lads,any idea why my flow temp would be this high when my curve would suggest it should be lower. I have attached pics.

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

Had cop of 3.7 for yesterday/this morning, that seems lot better then what i had last winter, 3.04 last winter but that included dhw. Freezing at 5am ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pumps and on/off working - starting to quantify it

@jamespa ah hoping to heat 530am to 9pm. Noise of pump keeps me awake. Hoping that house being well insulated will have reasonable heat loss overnight...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pumps and on/off working - starting to quantify it

@jamespa i turned heating on at 7am and setting it to go off at 9. Flow temperature 29 alot of the day, think i can get that lower over coming days.Ju...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pumps and on/off working - starting to quantify it

@derek-m was set to 38 at-5. Reckon was bit warm as living areas went to 24, some due to solar gain but air felt warm. At 36-5 now and ill see how ths...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pumps and on/off working - starting to quantify it

@jamespa its consuming 2kwh. Its first day since april heating the house. Hopefully il be able to adjust curve even lower then 36@-5. Started at 38 to...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pumps and on/off working - starting to quantify it

@jamespa TBH man, im not near as knowledgeable to understand that. When you say 4-5kw, does that mean 2-2.5kwh usage per hour to heat the house to mai...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Heat pumps and on/off working - starting to quantify it

So first day of heating season today. Temps in house were down to 19 in living areas and 16/17 in bedrooms. started my wc at 38-5 and 28-20 as per der...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

@derek-m he did no such thing, the day he came he was there for an hour or more fiddling with settings i think. All the flow rates were essentially th...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

@derek-m same amount of pipework, i saw it when it was down, all rooms covered at 150mm spacing. I jut thought if i have a few loops over 100m rather ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

Slight tangent, found out my plumber didnt go by designers loop plan, 26 loops meant to be in house, he only put in 17, he said it would have been was...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Heat pumps and on/off working - starting to quantify it

@derek-m thanks man, think i can live with 10% to keep her happy. Obviously be more then 10% the few days we have below freezing most of the day, will...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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