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Last seen: Oct 16, 2026
Unfortunately even with hydraulic separation you do need to worry about flow rates unless you are happy to increase operating costs by 15%, because un...
Definitely do this. My dhw operates fine without a buffer or volumiser and your logic explains why. Agree If you are replumbing why no...
Welcome. Do feel free to tell us about your project and ask any questions you have.
Just another thought - it might be worth thinking about the control strategy in relation to the backup heater. I think that the typical control strat...
When i was looking I encountered one installer who does this as standard. It's cheaper to buy a direct cylinder (no coil, just an immersion), a pump ...
It sounds like you are well organised. You want to aim for open loop operation on weather compensation only, no buffer, LLH or PHE between emitters...
Ok so that's 35MWh and 32MWh respectively, assuming 10kWh/l, indicative of 11-17kW assuming the boiler is 100% efficient (which it likely isn't) and t...
@guydeb It is going to be high loss. I have heard that the commonly assumed U values for stone walls is way to high, and the air changes is also o...
This has come up before; a close neighbour of mine did something similar and claimed the BUS grant, but of course that doesn't mean it is OK. I woul...
Agree, but you may have a hard time convincing them, as an overestimated survey is their ultimate protection. If you can get their calculations (and ...
This smooths things out a lot, basically its useless. Thats nowhere near an average 10kW It looks like you switch heating off at night...
I have a he 7kW Vaillant which is good. My comment would be there is, sofaik (based admitedly on what others say and the specs) nothing particularly ...
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Degrees of Separation
Latest Posts
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RE: Heat pump branding. Clever, contemporary… or a bit too much?
Im a scientist/engineer by training, so in principle I ...
By JamesPa , 11 minutes ago
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RE: Heat Geek Zero Disrupt: Are We Sleepwalking Into Another Race to the Bottom?
Thats true only if you do the wrong experiment. Done c...
By JamesPa , 21 minutes ago
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RE: How should the Boiler Upgrade Scheme be reformed?
@temperature_gradient Isn't that just describing a regu...
By Prunus , 35 minutes ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@david-2 Rather sounds as though Mr. Octopussurveyor wa...
By Toodles , 47 minutes ago
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RE: battery storage without solar
As of October 1st they need specific qualifications to ...
By EtchedPixels , 13 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 , 14 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 , 14 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 , 20 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 , 20 hours ago
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Although regulations may well vary from country to coun...
By Majordennisbloodnok , 20 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 , 20 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 , 24 hours ago
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RE: Passiv Smart Thermostat - Help & Forum Support
@energystoragetech The heat capacity of some...
By JamesPa , 1 day 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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