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Last seen: May 26, 2026
The folks over at diysolarforum.com are getting quotes for $1300-1800 (delivered, variously to US, EU, etc) for ~10kWh of LiFePO4 cells from China, de...
I'm not aware of smart TRVs with external temp sensors, but one possibly useful thing is that UFH setups typically have the valve and the temperature ...
I think what you're talking about are Fan Coil Units or FCUs. They're basically a pipe with metal fins to transfer the heat, with a fan to blow air t...
I'm not sure that difference is 'set', but it's essentially the properties of your heat emitters (radiators, UFH etc) and water cylinder. For exampl...
Oops, missed the edit window. It's section 8.4 on page 120 (External Heat Source) not 8.3 (electric backup heater) - it appears you can have both and ...
For Grant the heatpumps are made by Chofu who provide a much more detailed manual. See section 8.3, page 111 onwards: In particular, 8.3.2 describe...
The interviewer sounds like she wants to be Jeremy Paxman, interrupting and not letting the interviewees speak. But that seems to be her style - list...
Hi Cally We’ve had a 13kW Grant installed about a month now, and it was really noisy to begin with. It came from the pipes, although the outdoor...
Question from me: What are the risks of oversizing an ASHP, and are there ways they can be mitigated? For example, might minimum flow rate be a prob...
I did look at RED - Freedom Heatpumps have some videos on them. I'm a bit wary about this 'designed for the UK climate' thing: I've seen that slogan...
I came across this video: This is the perspective of, shall we call them, 'Big Boiler'. They take the position that they can build hydrogen boil...
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@jamespa haha very true, although the engineer yesterda...
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RE: Vaillant Arotherm Pro vs new Plus
One of the test modes in the installer menu forces it t...
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RE: Electricity price predictions
@toodles Didn’t happen with me on IOF once, and I was o...
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RE: What a difference a few degrees make.
Wow. Having accepted the challenge, I ran the cold tap ...
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RE: HeatPump maintenance in Swindon area?
@vince31 have you tried using our finder:/p>
By Mars , 18 hours ago
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Looking for beta testers for a new homeowner heat pump tool
Over the past few months I've been building a brand new...
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RE: Indevolt Batteries UK Support & Info Thread
It depends on how you configure it via the app. The ma...
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RE: Renewables & Heat Pumps in the News
Be interesting if this results in any wider changes to ...
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Heat Pump Fundamentals For Homeowners
Months in the making. Finally live. I've built an onlin...
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If Reform were to win, I suspect that many of the AR7/8...
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