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Last seen: May 31, 2026
Our smart meter install with OVO went fine. It's a lot bigger than the old meter we had before, but there was space. I find it more awkward to read ...
Hi Pat! We have a tiny 2.5kW(thermal, 660W elec) gshp, 4kWp solar, MVHR, 150mm EWI, 30kWh V2G car, 200l DHW tank, 4 bed highly insulated retrofit ho...
I think that did use to be a thing, but it is fraught with difficulty. Mice getting in, mould, stagnent water pools. All of these can be tackled - g...
I think you can make a pretty good guess that any floors installed prior to 1991 will have no insulation. A bit of googling gave U values over time (...
Hard to imagine how a hybrid inverter would be ok here. Imagine you got an Octopus Go tariff, charged up the batteries at cheap rate. Then discharge...
@sunandair You’re right, re-reading I wish I’d said it differently. Comparative measurements will be good! Caring, looking at the data is a great th...
I’ve never heard of a heatpump with MID certification - that would mean a certified accuracy of measurements. You can certainly buy heatpump power me...
I think the compressor would not like to be turned on when it is too cold (hence they often have heaters). Conversely, in warmer weather it may overh...
@cowshed_rich I don't think it's an inverter model - this says not: Perhaps you're right, and it's a "marginal COP" thing due to the DHW t...
That does sound surprising! I expect that you're right - the backup heater is likely to be an inline immersion somewhere. How do you measure the ...
@catapult I’m pretty sure that black thing in your pic is a magnetic water trap. Strong magnets inside pick up bits of circulating rust flaking of...
An Electrician will be able to fit a meter to your gshp system, and I think it's the first step in understanding if it is functioning well. I underst...
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Degrees of Separation
Latest Posts
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RE: Electricity price predictions
@old_scientist There is a degree of nuance to the ca...
By Papahuhu , 1 hour ago
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Further, there was a long discussion of the benefits of...
By Old_Scientist , 2 hours ago
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I appreciate that EnergyPlus is Valliant's first attemp...
By L8Again , 2 hours ago
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RE: Do I need to change the control unit when replacing my Ecodan Air Source Heat Pump
Unfortunately the answer is Yes you will need a new FTC...
By F1p , 17 hours ago
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RE: PV and battery long payback - sense check query
So if it helps I was recently quoted about 8 grand for ...
By EtchedPixels , 17 hours ago
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RE: HomeTherma Is Live: A New Home-Energy Platform Built Around the Homeowner
Signed up!
By bobflux , 1 day ago
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RE: Indevolt Batteries UK Support & Info Thread
I had a quick look and they are a little vague. They ...
By BlizzardGreen , 2 days ago
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RE: Has anyone seen this problem before? Huge anticycling times
Oh dear. Glad it was replaced. I have been mighty imp...
By JamesPa , 2 days ago
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RE: Can I start an argument about buffer tanks please? 🙂
Dont, just adjust the LSVs to get different temperature...
By JamesPa , 3 days ago
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RE: Heat pump running costs – what has actually worked for you?
I installed the air source heat pump in January 2026, i...
By bobflux , 3 days ago
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RE: Grant Aerona Air to Water R290 6.5 kW - Quiet Mark and Silent Running
Thats all interesting. DHW on my Vailant seems to respe...
By JamesPa , 3 days ago
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