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Last seen: Jul 14, 2026
Yes, often it goes up much quicker than it comes down..
@jamespa One reason is that the Arotherm Pro is currently awaiting inclusion in the ENA database (so not marked as "connect and notify"). This appr...
@annab Regarding the brands, the ones you mention are very common. Mitsubishi make R32 and also the newer R290 models, Vaillant Arotherm are all R2...
@jamespa It seems the Arotherm pro VWL 75/7.1 A 230V complies with IEC 61000-3-12 , exactly the same standard as the Arotherm Plus and the same lim...
@majordennisbloodnok We have a sort of inflatable rubber with a pipe, so there’s enough airflow to keep it dry…
We still have a gas fire for backup. The last gas engineers that visited got a bit excited when they noticed the rubber protruding and blocking the ch...
We had a discussion elsewhere about protection devices and specifically the type of RCDs required by some heatpumps. Vaillant specifically collaborate...
Not having a breakdown was not a problem in itself. The challenge was when we looked for different locations for the install, types of cylinders or nu...
I ran a quick check using This is what it says: Based on 14,313 kWh gas annually, the implied heat loss range is 4.8-7.2 kW. Your estimate of 9 k...
Absolutely no issues, I find it very useful. It seems I helped to derail the thread from the Helium future.. Not at all, thank you for the e...
@majordennisbloodnok @jamespa I stand corrected, A2A need defrost cycles just like A2W! 🙂 But on the relative efficiency, given that the...
@majordennisbloodnok I just noticed that A2A manufacturers tend to quote higher efficiencies than A2W. In practice the fact they inherently have no...
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Degrees of Separation
Latest Posts
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RE: Mitsubishi Ecodan FTC6 settings
I am not aware of a setting of this type but would be p...
By DavidAlgarve , 52 minutes ago
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What a difference a few degrees make.
With this prolonged spell of warm weather, the ground t...
By Toodles , 3 hours ago
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RE: Indevolt Batteries UK Support & Info Thread
Thank you, I am learning! With these plug in set-ups ...
By Hanno , 4 hours ago
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RE: New Vaillant aroTHERM Plus
In a word no, I have never fully understood the test co...
By JamesPa , 5 hours ago
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RE: Electricity price predictions
Thanks @old_scientist, that's good to know. Our battery...
By ChandyKris , 6 hours ago
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RE: Renewables & Heat Pumps in the News
Be interesting if this results in any wider changes to ...
By Jeff , 11 hours ago
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Heat Pump Fundamentals For Homeowners
Months in the making. Finally live. I've built an onlin...
By Mars , 22 hours ago
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If Reform were to win, I suspect that many of the AR7/8...
By Old_Scientist , 23 hours ago
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RE: HeatPump maintenance in Swindon area?
Sorry I can't but ... it sounds like a job any half dec...
By JamesPa , 2 days ago
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My contribution is to wonder how your radiators are plu...
By springswood , 2 days ago
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RE: Powerwall 3 tripping RCDs in powercut
If I were to write a remote diagnostics chart for the P...
By Transparent , 3 days ago
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RE: GivEnergy inverter tripping due to over-voltage?
possibly interesting to note the latest spreadsheet S...
By Tim441 , 3 days ago
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RE: Summer heat is becoming the new winter cold in the UK. What are you doing about it?
Our ashp service is booked for a couple of weeks from n...
By Judith , 4 days ago
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