Joining the Renewable Heating Hub forums is completely free and only takes a minute. By registering you’ll be able to ask questions, join discussions, follow topics you’re interested in, bookmark useful threads and receive notifications when someone replies. Non-registered members also do not have access to our AI features. When choosing your username, please note that it cannot be changed later, so we recommend avoiding brand or product names. Before registering, please take a moment to read the Forum Rules & Terms of Use so we can keep the community helpful, respectful and informative for everyone. Thanks for joining!
Last seen: Sep 13, 2026
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...
That is a good point, a manufacturers can stop trading, more often the distributor or installer. It is certainly useful to be able to extend the life ...
@majordennisbloodnok Absolutely and with efficiency being even better with a2a heatpumps, where there’s a will there’s a way..
@jamespa Absolutely, and that just comes back to bite us through increased defense spending!
@ian33a I never thought I could claim for damage to an energy storage system through household insurance? If that’s what you mean? Personally, I ...
Just wondering how the running cost of an oil boiler compare with a heat pump? As it would seem that there is a sort of standing charge and then the c...
Did you try using the find an installer tool in the site?
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Siting of the external sensor on a heatpump
I agree. However I would also (primarily) expect that ...
By JamesPa , 8 hours ago
-
RE: Next steps on my ASHP journey: Radiators and Pipework
You should (almost) always reject having a buffer, by w...
By JamesPa , 12 hours ago
-
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 , 15 hours ago
-
RE: Is it the house or the equipment?
@majordennisbloodnok I do sympathise. On the original...
By springswood , 17 hours ago
-
No, but the heat pump must be capable of delivering a S...
By JamesPa , 21 hours ago
-
Sorry to hear about the problems, its going to be somet...
By JamesPa , 22 hours ago
-
RE: Daikin ESPAltherma and Home Assistant installation
It's laziness lol The PV system is very chatty, meter...
By bobflux , 1 day ago
-
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 , 2 days ago
-
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
-
RE: Adventures in heat loss calculations
I have seen it stated that the declared calorific value...
By JamesPa , 2 days ago
-
RE: Two heating zones to one zone
@transparent Many thanks. The garage is fairly well ...
By Profzarkov , 3 days ago
-
RE: Vaillant Aurotherm - Heater Wire Position
Ah, good point. I need to check if this was installed i...
By Batpred , 3 days ago
-
@batpred thanks for getting a copy. Appreciate the supp...
By Mars , 3 days ago
-
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
SPONSORS
