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: May 31, 2026
We heat our 10yr old solar tank with a gshp. It used to just heat the top coil with up to 55C flow, getting the water tank to ‘maybe’ 43C. In the No...
I think as gas and oil boilers get phased out, low install cost heat storage solutions will seem too attractive on Octopus go - so I agree, Octopus wo...
@jvs197 I suggest that you experiment with your present gas system, so that you can determine how well an ashp could work. It’s what I did before i...
We swapped to a HP 2 years ago, after running a regular gas boiler for many years. We have smart meters, so could correlate daily gas kWh with the out...
s The rule of thumb I’ve seen has been total yearly kWh/2000 gives the peak power in kW. It works for us- but would give 36000/2000=18kW. Are you ...
Yes, probably it does matter, depending on the rest of your system. If you have a heat exchanger, it's likely using it the wrong way around, which wi...
There are so many insurance options these days, which I believe most people would be better off without. Bike, phone, washing m/c, heating system, pe...
Once you've cut out the compressor, will there be swarf in the cut pipes? If it's stored badly, will the sump oil get water in it which turns it to a...
Correct me if I'm wrong, but is heatmiser an on/off thermostat type controller? Can you describe your GSHP a bit more: Make / model /power? Is it...
I can't think of a single reason why you would want to operate a counterflow heat exchanger the wrong way around, the inefficient parallel way, in a h...
@transparent I'm "listening" eagerly to this thread too! We have old 4kWp FIT PV with an MCS form, and I now have dno approval for an additional, ...
@cathoderay Apols for badgering on this topic about other controls, but do you really have just have weather compensation only running ? As I under...
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 , 9 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 , 16 hours ago
-
RE: Is it the house or the equipment?
@majordennisbloodnok I do sympathise. On the original...
By springswood , 18 hours ago
-
No, but the heat pump must be capable of delivering a S...
By JamesPa , 22 hours ago
-
Sorry to hear about the problems, its going to be somet...
By JamesPa , 23 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
