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Last seen: Aug 26, 2026
About Me
My wife and I own a 5 bedroom detached house, with about 350 sq. m spread over two floors. It was built in 1968. We installed a Grant Aerona 290 15.5kW system installed in August 2025.
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Grant Aerona 290 15.5kW, Grant Smart Controller, 2 x 200l cylinders, hot water plate heat exchanger, Single zone open loop system with TRVs for bedrooms & one sunny living room, Weather compensation with set back by room thermostat based load compensation
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Latest Posts
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RE: Adventures in heat loss calculations
Great work. Have you subtracted the fixed contributio...
By JamesPa , 20 minutes ago
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I bought it, read it, enjoyed it. Despite my earlier c...
By JamesPa , 29 minutes ago
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RE: Tell us about your Solar (PV) setup
Our PV set-up has moved over time. Warning this is a sh...
By Judith , 13 hours ago
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RE: Where heat loss surveys seem to go against practical reality
@cathoderay @jamespa I've managed to get some nice re...
By Rob of York , 21 hours ago
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RE: 7kW EV Charger Options Advice
Doh, not sure that I was thinking straight there, less ...
By Rusty , 23 hours ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
I’m really liking reading through this thread and the r...
By Judith , 1 day ago
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Thank you @trebor12345
By rgabor , 1 day ago
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Panasonic Free Multi Z and Etherea Internal units.
My prospective installers have suggested the Panasonic ...
By Toodles , 2 days ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
Great. You just need to find a way of cranking up your...
By JamesPa , 2 days ago
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RE: Heat Pumps Without Grants: Would You Have Installed One & Will You Now?
We had two heat pumps installed without Govt funding. H...
By Rob of York , 2 days ago
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My Adapt is finally installed and running! Almost a yea...
By tomasmcguinness , 2 days ago
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RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 5 days ago
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RE: How Accurate Is My DIY Heat Loss Calculation?
@batpred I suspect it will be more this year. I had 9 ...
By AndrewJ , 5 days ago


