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Last seen: Mar 20, 2026
@transparent Thanks, this is extremely helpful, especially the explanation about NHBC pre‑registration and older SAP/Building Regs potentially being ...
@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, ...
@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...
@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...
@deltona I have raised it with their resolution service
@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...
@transparent Thanks for the information — yes, this is definitely of interest. Just to give you a quick overview of where things currently stand with...
@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...
@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...
@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...
@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...
Latest Posts
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RE: Estimating true heat loss from twelve months of consumption data
Hi @ian33a you could do your own heat loss calculation ...
By Judith , 6 hours ago
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RE: A2A vs A2W: Which Heat Pump Would You Pick?
@djh ah, I have never seen this before, interesting ide...
By ASHP-BOBBA , 6 hours ago
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RE: Anyone concerned about GivEnergy?
@sunnyskies I agree with Downfield trying to ask the GE...
By Judith , 6 hours ago
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RE: Setback savings - fact or fiction?
@jamespa — this version may be marginally better: &nb...
By cathodeRay , 8 hours ago
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RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
All going according to plan, mid July we get that 7kW a...
By Batpred , 9 hours ago
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Current metrics - DHW target set to 47c
By TaffontheTaff , 14 hours ago
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RE: My Grant R290 9kW Heat Pump Installation
@petch I'm very sorry that I have not picked up your po...
By GrahamF , 16 hours ago
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RE: Samsung gen 7 HP 12kw - auto control issue and water law
Suggest you have a trial with Havenwise app. I have th...
By Broadsman , 18 hours ago
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RE: New Solar, Batteries, Air Source and Under Floor Heating advice please
You’re right: UFH works best with high-conductivity fin...
By bafab , 21 hours ago
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RE: DIY or Don’t Touch? Solarman Smart Meter Install
That was my understanding also.
By JamesPa , 21 hours ago
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RE: Grant Aeona 3 R32 cycling with weather compensation.
That would be abnormal but I cant see from your charts ...
By JamesPa , 21 hours ago
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RE: Vaillant Sensocomfort Time
Oh I remember this from when I set mine up 2 years ago,...
By JamesPa , 1 day ago
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Heat geek have already stated that the pro is in fact c...
By JamesPa , 1 day ago
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RE: The Myth of the MCS Performance Guarantee
@editor I know. As if MCS wasn't bad enough, it's now e...
By Deltona , 1 day ago
