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Last seen: Aug 20, 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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@jamespa Also this coming winter I am going to run my c...
By kilgorexv , 2 hours ago
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RE: Heat Geek mini store vs pump size
Yes I agree, that’s why Heat Geek have most likely sele...
By Tomtheheatingengineer , 6 hours ago
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RE: Who's your electricity provider and what's your tariff?
@chandykris Swings and Roundabouts, you win some…. ...
By Toodles , 6 hours ago
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@tomtheheatingengineer, thank you, and welcome to the f...
By Mars , 14 hours ago
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RE: HeatGeek vs Octopus surveys: puzzling disparity - any ideas why?
@majordennisbloodnok @tomtheheatingengineer For my ...
By JamesPa , 14 hours ago
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RE: Do I add Air Con or MVHR to existing A2W ASHP?
There is scope for product development here. I for one...
By JamesPa , 16 hours ago
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RE: Is the "divide by 2900" rule still valid?
Really flow rate is a pipework limitation not a water p...
By JamesPa , 1 day ago
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RE: The good, the bad and the not that great – my heat pump installation
@burtis, I’ve followed this thread pretty much from the...
By Mars , 4 days ago
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RE: Starting Our Heat Pump Journey: 1962 build 3 bed detached house
First time poster here but I can share my experience as...
By SCH , 4 days ago
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RE: Is it the house or the equipment?
...which, I've found out, is pretty much impossible to ...
By Majordennisbloodnok , 5 days ago
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RE: Mitsubishi Ecodan FTC6 settings
The Mitsi remote thermostat should not be plugged into ...
By F1p , 5 days ago
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RE: PV and battery long payback - sense check query
@jamespa I was just commenting on the speed, not sug...
By Batpred , 5 days ago
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