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newhouse87
@newhouse87
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Joined: Mar 15, 2023
Last seen: Aug 16, 2025
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Topics: 1 / Replies: 230
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RE: Heat pumps and on/off working - starting to quantify it

coming to conclusion after talking to hydros too, you cannot run hps at lwt less than 27 in my house anyway. Currently running at 28deg desired, no cy...

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

Just went into installer, can see compressor starts so far 98 in october, might monitor that tomorrow actually and see how man per hour. Also saw sett...

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

He didnt quite say but he said he couldn't run low lwt when temps above 8, probably same as me by sounds of things. You suggested running on stats and...

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 I will do tomorrow when herself gone to work, she thinks im having an affair with the hp at this stage. Not sure where i can find compressor...

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

Looks like a user called hydros was having same issue few years back. Seems at temps above 8 degree you cant have low lwt without excessive cycling.

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 Do you mean compressor stopping and starting? Just keeping an eye on compressor seems to be on for 10 off for 10 approximates. House is 242sq...

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

flow is stopped also, presume due to delta t being too low. In my situation its never that lwt is getting too high, at most usually 1deg above desired...

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

When rwt is same or slightly higher then lwt, does that mean floor/house has taken as much energy out of water as possible? Iv set curve lowest so fa...

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

@rod think lowest i got to was 26@10deg outside. In colder weather will try bit lower, still a lot lower then installer had it originally set to. Appr...

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

@rod yeah thats top class man, if you read back here, im having issues getting my flow temps much lower due to cycling/heat demand but i hope when wea...

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

Checked my cop for yesterday, was pleasantly surprised at 5.05. Way above last winter, wasn't coldest day yesterday but things def seem to have improv...

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 yeah man, house warm which is main thing, again quite mild today so sooner colder weather here the better haha. Its just something i haven't ...

2 years ago
Forum
Air Source Heat Pumps (ASHPs)
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