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MorganR
@morganr
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Active Member
Joined: Apr 9, 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...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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 '...

9 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 ...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
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...

9 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...

9 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...

9 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...

9 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...

9 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...

9 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 ...

9 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...

9 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...

9 months ago
Forum
Air Source Heat Pumps (ASHPs)
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