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MorganR
@morganr
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Active Member
Joined: Apr 10, 2025
Last seen: Jun 23, 2025
Profile Activity
Topics: 1 / Replies: 15
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Reply
RE: Flow Rate & Low Loss Headers

@jamespa I appreciate you really digging into this with your brain! 😀 So this is the first summer that I'm actually thinking about this sort of thin...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Flow Rate & Low Loss Headers

Yep! And I agree.. the R290 placement restrictions are crazy prohibitive atm. 🙁 If R32 continues being phased out (and manufacturers don't add more '...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Flow Rate & Low Loss Headers

@jamespa Hmm, ours would be on an adjoining wall to one bedroom (our current bedroom), and directly below another bedroom (which will be our future ...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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RE: Flow Rate & Low Loss Headers

@jamespa Also, check the noise spec given its going to be indoors. They say it's 56db, which is apparently similar to a modern boiler? And much lo...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Flow Rate & Low Loss Headers

@jamespa & @judith Thank you for giving me confidence in my logic! It’s great to hear I’m kind of on the right track, and it’s super helpful to he...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Flow Rate & Low Loss Headers

Hello @old_scientist! Yep looking at the coldest day(s) is exactly what I showed in my spreadsheet on the previous page, here:/p> You can see on t...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Flow Rate & Low Loss Headers

Hello @old_scientist! Yep looking at the coldest day(s) is exactly what I showed in my spreadsheet on the previous page, here:/p> You can see on t...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Flow Rate & Low Loss Headers

I did a little thinking on it myself! In February this year we used an average of 31 kWh of gas per day for heating + HW. Assuming a generous boiler e...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Flow Rate & Low Loss Headers

@editor Hah, interesting! Thank you for asking! I assumed they weren't as bad just due to the smaller size, and the way they're spoken about in some o...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Flow Rate & Low Loss Headers

Well you have certainly done due diligence I've certainly tried! 🤣 It's been mind-blowing how hard it is to convince some installers that ...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Flow Rate & Low Loss Headers

@bontwoody Would the main consideration for determining whether the pump could achieve that flow (with the pipe resistance as it is) be the power capa...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: Flow Rate & Low Loss Headers

@allyfish That does look wrong, doesn't it! For identical flows, where the primary and secondary sides are 'in balance' What about when that isn't t...

11 months ago
Forum
Air Source Heat Pumps (ASHPs)
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