Last seen: Oct 31, 2025
Yuck, yuck and more! Others have pointed out lots already and yet your installer claimed that he did a great job! In order of horror level @maj...
We have a 4kW FIT array, and have added a battery with no problems. The key is using an AC inverter to the battery. Hybrid ones charge the battery at ...
Whether you need a separate thermostat for your UFH heating depends on 2 things, what flooring you have and what the maximum temperature is that the h...
@drei just a small detail on your table posted on the 24th. scop is seasonal coefficient of performance so you need a year of data . What you are sho...
@adamk &@editor I think these FRVs come into their own for professional first installation use We were very fortunate that our installer did a r...
In one en-suite bathroom we have a 180cm high towel rail which isn’t enough wattage really, but the bedroom donates plenty of heat. In another we si...
@adamk what you need is enough battery size to cover 3 hours of peak prices mid winter that you get on some tariffs so probably >10kWh, with enough...
Accuracy of -/+1C is normal
@jarlatheoin do put the MVHR in early it’s not an easy retrofit. Even if you save on the unit itself the ductwork is what is difficult to retrofit. Pu...
We have exactly what you describe, one utility room with UFH but radiators elsewhere. Design one single open loop, increase radiator size if need on...
Since you already have the ashp it makes little financial sense to add solar thermal to it. We already had solar thermal (vacuum tube type), so had an...
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RE: When will fusion be producing energy?
Ai used to be the same. But then it started delivery of...
By Batpred , 3 hours ago
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RE: Buying large amp bidirectional RCD and RCBO
Ok, but it would be helpful to get a figure. Perhaps as...
By Batpred , 3 hours ago
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RE: British Gas Heat Pump Installation Complaint
While it's obviously extremely poor form from British G...
By Steelbadger , 5 hours ago
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RE: Flexi-Orb Heat Pump Scheme: A Game-Changer for the UK's Heat Pump Industry
It’s the perfect strategic partnership between governme...
By Mars , 6 hours ago
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RE: When to use Octopus Intelligent Go tariff with my heat pump and battery
Difficult to be completely prescriptive without more de...
By JamesPa , 10 hours ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@allyfish It was going so well with month after month s...
By Toodles , 12 hours ago
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RE: Electricity price predictions
As that's an energy issue, it would need the DESNZ to p...
By Transparent , 13 hours ago
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RE: UFH downstairs and radiators upstairs balancing question
Have you tried turning up the stat and turning down the...
By JamesPa , 13 hours ago
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RE: Help me keep the faith with my air source heat pump installation
I have the same firmware. I have MyVaillant version HA...
By JamesPa , 14 hours ago
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RE: Midea ASHP – how to set weather compensation
@pash44pump - thank you
By cathodeRay , 14 hours ago
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RE: Mediation with RECC, what's your experience?
Welcome to the forums @treewizard and sorry to hear abo...
By Mars , 15 hours ago
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RE: New build installation query
That accounts for why you start with an overly-high DHW...
By Transparent , 16 hours ago
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RE: Daikin Altherma 3 / HomeAssistant
I would have thought that (instantaneous) power is a fa...
By JamesPa , 17 hours ago
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RE: Are We Sleepwalking Into Another Race to the Bottom?
Alright, I concede that the Toyotas are, as you say a v...
By JamesPa , 19 hours ago
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RE: Is it mad to think there should be a minimum SCOP for UK heat pump installs?
Sadly I think it is mad. If the BUS is not granted for ...
By Judith , 1 day ago
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RE: Who has a V2G EV installation
Perfect, @agentgeorge. I’m always up for some edificati...
By Majordennisbloodnok , 1 day ago
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RE: My experience with 3 heat pump surveys: Heat Geek, British Gas & Octopus
Yes but... The evidence is that many heat loss survey...
By JamesPa , 1 day ago
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What Adam Chapman gets up to in his Spare Time.
Ok, so this just appeared on YouTube (don’t blame me th...
By Toodles , 1 day ago
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RE: Radiator Sizing Dilemma: Vertical vs Type 33 for Low-Temperature Heat Pump Systems
That's my main concern too. On top of that, I ...
By DREI , 1 day ago


