
Last seen: Sep 9, 2025
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We’re reviewing the Immersun, and I came across this formula that I used to calculate the amount of energy required to heat 300 liters of water from 2...
@derek-m, how can I calculate how much water I’m heating per degree centigrade based on diverting 1kWh of solar generation? Put another way, if I ha...
@cathoderay, maybe you could arrange and condense it into an article (word count is up to you) and it could be posted on the main site as a reference ...
Is the communication via the smart meter two-ways? Obviously, the meter is sending data to the provider, but is it receiving information too? If yes, ...
@cathoderay, Well done!
This thread, quite honestly, gives me an anxiety headache when I see updates and posts 😥 @cathoderay, your perseverance, patience and dedication ha...
@derek-m, we might have to add Heat Pump Whisperer to your signature – I love that – that's quite an accolade.
@heacol, do you have any insights or thoughts to answer AF1's question?
Can't comment on the brands you've mentioned – we had a SolarEdge inverter fitted with our PV array and it's been brilliant. Going on five years now a...
We interviewed Malcolm Farrow from OFTEC to find out more about OFTEC's heat pump design and installation training, and we also got an update on the H...
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RE: 300 Liter Tank - Do I have to heat it all?
I do not think that a 300l cylinder is too big for a tw...
By jamespetts , 23 minutes ago
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RE: Heat Pump SCOPs – The Truth Might Not Be What You Think
Is that heat loss, or maximum output of the ASHP? Unde...
By Scalextrix , 17 hours ago
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RE: Mitsubishi Ecodan 11kw Defrosting Issue.
@morgan Fully agree with you. It shouldn't be the homeo...
By HCas , 18 hours ago
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RE: Solar Thermal DHW and ASHP
@judith That makes sense to me! If I was in @alex_n '...
By HCas , 19 hours ago
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RE: Vaillant aroTherm Plus 10kW thoughts?
Good unit. And the 10 kW is the same as the 12 kW I ...
By HCas , 19 hours ago
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RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
@judith thanks for your suggestions. Starting from col...
By GrahamF , 22 hours ago
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RE: Inventor (Midea) Heat Pump short cycling advice
I switched to "fan coil mode" to be able to set water t...
By immunity , 24 hours ago
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RE: DESNZ doing a survey which asks the right questions!
Without a survey their only source of data is probably ...
By JamesPa , 1 day ago
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RE: Can you help with our research: solar panels, EV chargers, home batteries, heat pumps?
Just done your survey!
By Judith , 2 days ago
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RE: Failing heat pump system - seeking thoughts on a rebuild
@cleardene-ashp just thinking about your issues here. Y...
By Judith , 2 days ago
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RE: Midea ASHP – how to set weather compensation
@cathoderay OK let's wait and see, it sounds an interes...
By Tasos , 2 days ago
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RE: What is the Heat Geek Guarantee?
@judith, I’m with you on Heat Geek, but there really do...
By Mars , 2 days ago
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RE: Electricity price predictions
Community energy installations are a great idea, but th...
By Scalextrix , 3 days ago
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RE: New Vaillant aroTherm Plus in black - When will it come to the UK?
Ooh, heat pumps in neon blue wrap 🤣 🤣 &...
By Old_Scientist , 3 days ago
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@profzarkov Good to know in case it ever happens to me...
By bontwoody , 4 days ago
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RE: Are Octopuses Slowing Consumer Adoption of Heat Pumps?
I mean, is this surprising? The local installers in my ...
By Alex , 4 days ago
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@old_scientist sorry, I should have made it clear that ...
By GrahamF , 4 days ago
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RE: Boiling Mad: Exposing Radiatorgate
Hi @Rob, I’d be more than happy to contribute. I have ...
By DREI , 4 days ago