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Newby
@newby
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Joined: Mar 7, 2026
Last seen: Mar 20, 2026
Profile Activity
Topics: 1 / Replies: 11
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Reply
RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences

@transparent Thanks, this is extremely helpful, especially the explanation about NHBC pre‑registration and older SAP/Building Regs potentially being ...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences

@johnnyb   Thanks for all of that is really helpful context. I agree that if the house can’t get above 16°C in cold weather with a 7 kW unit, ...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences

@jamespa Thanks for the detailed thoughts, that all makes sense. I’m going down the formal route for now, but I’m trying to understand the system bet...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences

@jamespa Thanks, That’s really useful. I’ve got the Daikin MMI controller and will increase the WC curve to 55°C @ -3°C on the next cold spell. I’l...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences

@deltona I have raised it with their resolution service

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences

@cathoderay I’m going down the formal route rather than trying to redesign the system myself. The house is too cold, it can’t reliably reach 21°C, an...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences

@transparent Thanks for the information — yes, this is definitely of interest. Just to give you a quick overview of where things currently stand with...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences

@jamespa Thanks for the detailed questions — here’s the extra information that might help clarify the situation. We don’t have any of the formal de...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences

@cathoderay Thanks, yes, it’s definitely a red flag that the developer won’t release the heat‑loss calculations or any of the design data. I’ll giv...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences

@cathoderay I don’t have an accurate heat‑loss figure yet because the housebuilder hasn’t provided any of the required design data (SAP, BREL, U‑valu...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Reply
RE: New Build ASHP Defects - Looking for Advice, Support & Shared Experiences

@jamespa Thanks again for your help — here’s a clearer and more detailed breakdown of the situation, including the temperatures we’re seeing when the...

1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Topic
New Build ASHP Defects - Looking for Advice, Support & Shared Experiences
1 month ago
Forum
Air Source Heat Pumps (ASHPs)
Replies: 30
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