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Last seen: Sep 12, 2026
Yes, our system is wired, so the OAT sensor and the internal thermostat do not have battery points of failure 😉 . We could wait for the instal...
Good suggestion. I did think about that when I had the Vaillant boiler. The new anthracite Arotherms use modbus between pump and heatpump interface bo...
That’s what we will potentially do. But i did have a close look this morning and @bobflux is right, the wall is not completely north facing and the mo...
I think not but have now added the cloud coverage weather graph, just in case. Potentially the temperature sensor could be shielded temporarily, to...
I think that is outrageous even if I suspect not unique to Vaillant. Also not right if someone installs a heatpump but is not prepared to service it...
Ah, good point. I need to check if this was installed in our case. The instructions for Ground installation for the Pro say: "The downpipe must f...
Loved it. I am not one for history, but the history of British heating clearly has its audience! Hope it stays up there in the charts. The garage t...
I have a recent Pro model. It has a condensate drain at the bottom. In my case, it is anthracite colour and drains to a gulley nearby. I know the el...
An approach, given that we are looking to understand how to size a heatpump (so the maximum power ever needed for a 3 or 6hr period), is perhaps to lo...
That makes sense. Heat Geek seems to adjust their business based on their operational data and are also strategic in their options (like when their in...
That's great! I think we managed to get to that last month (no PV) but the heatpump will easily change that as winter approaches.
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Degrees of Separation
Latest Posts
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RE: Siting of the external sensor on a heatpump
The answer is going to depend on what characteristic of...
By Transparent , 11 minutes ago
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RE: Next steps on my ASHP journey: Radiators and Pipework
You should (amost) always reject having a buffer, by wh...
By JamesPa , 32 minutes 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 , 4 hours ago
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RE: Is it the house or the equipment?
@majordennisbloodnok I do sympathise. On the original...
By springswood , 6 hours ago
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No, but the heat pump must be capable of delivering a S...
By JamesPa , 10 hours ago
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Sorry to hear about the problems, its going to be somet...
By JamesPa , 11 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 , 24 hours 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 , 1 day ago
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RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 1 day ago
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RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 2 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 , 2 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 , 3 days ago
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