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Last seen: Sep 13, 2026
It's great that HG are pushing this. But we must have some strong headwinds here! Every time I look for documentation on the Arotherm Pro, apart fr...
My view is of a very gradual growth of heat pumps, as our gas/electricity cost ratio is not a strong enough incentive. Also much simplification of ...
What I mean is in case inspections are being missed due to lack of funding, that is a false saving. But I have also seen cases where consumers lack...
I am not surprised, the solution must be to make sure whoever is inspecting cannot take shortcuts, and that they will engage with the consumer. As ...
@jamespa Yes, should be the same impact as the 7kw Plus. I spoke to UKPN and they just asked to use a form (as the portal system does not have t...
Could the Building Reg inspector not use some certificate issued by the installer on a self certify basis? Or any similar mechanism to obviate the nee...
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...
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Degrees of Separation
Latest Posts
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RE: Siting of the external sensor on a heatpump
I agree. However I would also (primarily) expect that ...
By JamesPa , 7 hours ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
You should (almost) always reject having a buffer, by w...
By JamesPa , 10 hours ago
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RE: Navigating the World of Refrigerants In Heat Pumps: A Guide for Homeowners
Indeed we are invvestigating AC at present and are havi...
By Toodles , 14 hours ago
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RE: Is it the house or the equipment?
@majordennisbloodnok I do sympathise. On the original...
By springswood , 16 hours ago
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No, but the heat pump must be capable of delivering a S...
By JamesPa , 20 hours ago
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Sorry to hear about the problems, its going to be somet...
By JamesPa , 21 hours ago
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RE: Daikin ESPAltherma and Home Assistant installation
It's laziness lol The PV system is very chatty, meter...
By bobflux , 1 day ago
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RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
R (The R Project for Statistical Computing, I use it wi...
By cathodeRay , 1 day ago
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RE: Vaillant Arotherm Plus 7KW need a service on it
booked it with Vaillant. will use them until i can find...
By AdamK , 2 days ago
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RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 2 days ago
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RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 3 days ago
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RE: Vaillant Aurotherm - Heater Wire Position
Ah, good point. I need to check if this was installed i...
By Batpred , 3 days ago
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@batpred thanks for getting a copy. Appreciate the supp...
By Mars , 3 days ago
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RE: Tell us about your Solar (PV) setup
We have a 6.56kW solar PV system (16x 410W panels) inst...
By Rob of York , 4 days ago
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