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Last seen: Mar 3, 2026
Has anyone been able to find meaningful information about the TriVal option on Vaillant SensoComfort / AroTherm Plus systems? It sounds like it ought ...
@papahuhu Thanks for that .. OvO was offering 15p/unit 24x7 with a cap at 6000 kWh as I recall. I'd love to be able to use solar but a maritime climat...
@toodles I'm running at 4.5 kW just now. Assume two parallel 13.5 kWh Powerwalls, they would charge in 2.7 hrs @ 5 kW each and the heat pump would nee...
@papahuhu With OvO withdrawing their Heat Pump Plus tariff I'm suddenly interested in alternatives but I had rather assumed that a time of use tariff ...
@transparent D'Oh - I did look before I posted but I missed that one ...
@editor Mars, Much kudos to you for all your enthusiasm and hard work here! It seems we start 2026 with the rug being removed from under us as discou...
@derek-m .. Of course though *you* may forward plan it doesn't follow that the next person does and the utility companies have to add a safety margin....
@johnmo An AroTHERM 12-14 kW ASHP can draw 23.3 amps so let's say your big old stone manse with its outbuildings needs two of those and you have an EV...
@editor Hi - An update to my earlier introductionOur hybrid ASHP / Oil boiler system went in in April and has been doing its thing without major issue...
I can report one tangible result of putting in a heat pump (ASHP) - I had to provide an up-to-date EPC as part of the grant conditions and my house we...
@toodles Sounds like you're sorted - these things niggle though once you spot them. I totted up the bare metal on the flow side of my system and I ca...
@toodles undesirable but insignificant sums it up pretty well though the cumulative effect may be another matter. I have a retro-fitted hybrid system...
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Degrees of Separation
Latest Posts
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RE: Where heat loss surveys seem to go against practical reality
@rob-of-york Interesting that you mentioned this as an ...
By ian33a , 1 hour ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
@bobflux The hydraulic simulator is very interesting...
By Rob of York , 2 hours ago
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RE: 7kW EV Charger Options Advice
Thanks. Yes, we have patchy 4G. The only option we had ...
By Rusty , 8 hours 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 , 23 hours 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 , 23 hours ago
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RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 24 hours ago
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RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 1 day ago
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It’s been out a few days and Amazon has already attache...
By Mars , 1 day ago
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RE: Missing flow temperature in Heat Geek proposal
Yes, and this is another point I agree. We did find a f...
By Batpred , 1 day ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
A very good point. In effect, the DHW pipework is an em...
By cathodeRay , 1 day ago
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RE: Solar Power Output – Let’s Compare Generation Figures
@tim441 Here are those same three month periods for 202...
By Toodles , 3 days ago
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RE: Adding additional Solar Panels to a DC coupled battery system
@transparent thank you for your reply above. As alway...
By Old_Scientist , 4 days ago
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RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 6 days ago
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