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Last seen: Oct 15, 2026
@jamespa @rob-of-york is intending to put 3.7kW down some old 15mm copper and needing to use a dT of 7C to do it, so there isn't any headroom. TBH ...
Heating pipes don't usually run around the perimeter of a house but forward and back (or side-to-side) from a central airing cupboard, with T-junction...
Is the pipework the original, like the radiators? If so then it will be 3/4 inch and 1/2 inch and not 22mm and 15mm. They are narrower internally, 1/2...
While @F1p's dongles are great, the FTC can do this itself. It's called Summer Mode and can be found in the Service settings (default password is 0000...
Yes, also the higher OAT end is possibly a smidge high too. Also that experiments often need repetition to incorporate discoveries. &n...
Sorry that was less for you and more for others that have suggested that your findings provide a general proof of setbacks saving energy/money. &nbs...
TBH I'm not sure saving energy has been proven yet (see below) but maybe in your data there is proof. As always there is an n=1 aspect to this, it mig...
Hi @cathoderay Thanks for the analysis! This last graph possibly shows the reason for the reduced energy usage at lower OATs. The no setback IAT is...
As the owner of a 8kW Ecodan R290 maybe I can help. While we don't use it, and just use weather compensation, I believe the Auto Adapt mode can do ...
We've had an Ecodan R290 for 18 months and it's been reliable and efficient (SCOP of 4.8+). The Vaillant spec says the Aerotherm Plus is 450mm deep...
I answered that days back, I even provided a summary of my answer (reproduced below). So the two similar days with setbacks would be expect...
I changed the pump power to the actual value to see if the energy consumption estimate improved but it is still woefully inaccurate. As I have an accu...
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Degrees of Separation
Latest Posts
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RE: Heat pump branding. Clever, contemporary… or a bit too much?
I think Heat Geek have done an amazing job on their bra...
By Tomtheheatingengineer , 2 hours ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
I have just had 3 heat loss surveys, one by heat geek o...
By David , 3 hours ago
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RE: Heat Geek Zero Disrupt: Are We Sleepwalking Into Another Race to the Bottom?
I think that's the key question. After all inverter uni...
By Prunus , 4 hours ago
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RE: battery storage without solar
As of October 1st they need specific qualifications to ...
By EtchedPixels , 5 hours ago
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RE: How should the Boiler Upgrade Scheme be reformed?
A unit which uses water to transfer the heat/chill from...
By Temperature_Gradient , 5 hours ago
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RE: Renewables & Heat Pumps in the News
With regards to the BUS grant raid, I gave it more thou...
By ASHP-BOBBA , 6 hours ago
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RE: Why are ASHP installs so expensive?
The whole system seems to work on the basis of...
By ian33a , 6 hours ago
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RE: Missing flow temperature in Heat Geek proposal
Good plan. If you can get half hourly meter readings a...
By JamesPa , 11 hours ago
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RE: Heat Pumps Without Grants: Would You Have Installed One & Will You Now?
@editor Most certainly. The heat pump was an ideal s...
By Abernyte , 11 hours ago
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Although regulations may well vary from country to coun...
By Majordennisbloodnok , 12 hours ago
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RE: Does anyone have experience of a smart water meter?
Yep I caught our slow leak from a £100 bill rise 8)
By EtchedPixels , 12 hours ago
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RE: Do You Need a Buffer Tank or Low Loss Header for Underfloor Heating in a Large Property?
@jamespa in some cases, failing the Turing test might b...
By GrahamF , 15 hours ago
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RE: Passiv Smart Thermostat - Help & Forum Support
@energystoragetech The heat capacity of some...
By JamesPa , 17 hours ago
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RE: tepeo ZEB UK Support & Info Thread
Sorry you are correct, I was remembering figures from t...
By JamesPa , 1 day ago
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