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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...
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Degrees of Separation
Latest Posts
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second winter starting with Vaillant 7Kw arotherm plus still noise inside house
just had Vaillant over to service the HP and asked abou...
By AdamK , 7 minutes ago
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RE: Replacing Storage Heaters with a Heat Pump in a Stone Cottage
There are of course some installers trying it on, as th...
By JamesPa , 19 minutes ago
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RE: Passiv Smart Thermostat - Help & Forum Support
Hi @will-h After a week or running on the Haier cont...
By Singlespeed , 7 hours ago
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RE: tepeo ZEB UK Support & Info Thread
OK so ZEB is basically a variant on a storage heater, b...
By JamesPa , 1 day ago
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RE: PV and battery long payback - sense check query
@energystoragetech it's highly improbable that @davidb ...
By Transparent , 1 day ago
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RE: Heat Geek installations: share your experiences
@editor I suspect that the Heat Geek online quote is a ...
By AndrewJ , 1 day ago
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RE: Adding additional Solar Panels to a DC coupled battery system
Ah, yes. Thanks for clarifying.
By Transparent , 1 day ago
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RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
@trebor12345 I have been meaning to get home assista...
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RE: Indevolt Batteries UK Support & Info Thread
SunSynk hybrid inverters also have the capability to as...
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RE: Is This Initial Free Quote From Octopus Trusted Partner Reasonable?
If you've got a sash window or a door you can remove th...
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RE: Are We Sleepwalking Into Another Race to the Bottom?
Roughly how most air/air is done except that step 3 doe...
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RE: Nook batteries from Octopus
@batpred If your energy use is low enough that just get...
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RE: Missing flow temperature in Heat Geek proposal
I suspect 4 yrs ago, their approach had not got to this...
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RE: battery storage without solar
Also don't forget that in you may not be able to use th...
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