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: Nov 10, 2026
Its actually very cold at night just at present, mine is runnoing at upper 30s flow temperature and going into defrost mode overnight! Looks like...
Sorry to hear this is not yet fixed but please do keep posting as those here can help. At present its actually very cold at night despite the warm da...
Sorry to hear this, it shouldn't happen! Did the installers bump up the WC curve again and/or reinstate control by thermostat, undoing all your good...
Which, if you are right (which you may be), is unfortunate to say the least, because climate change and the catastrophic effects it is certain to have...
PHE s can fail, I'm not sure what the most common failure mode is. If a plate separating the two circuits failed pressures will presumably equalise, ...
Hitachi is sadly not alone. The OAT sensor should be in the shade and out of any influence from the heat pump itself. only some manufacturers do thi...
If you have heat exchangers between primary and secondary the two circuits are isolated so a leak in one wont affect the other. So whichever pressure...
Im not sure what you are monitoring but defrost is normally done by switching off the fan reversing the direction of refrigerant flow so the heat ...
If your ASHP has both a pressure sensor internally and isolation valves and you also have a pressure sensor one on the expansion vessel then you can i...
I would actually (and reluctantly) challenge the assertion that its fixable (it can probably be improved however). There are rogue traders throughou...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Buffer tank on a 2 x 14kw Ecodan system
This is the energy consumed since September... ...t...
By fosterl2 , 28 minutes ago
-
RE: Who's your electricity provider and what's your tariff?
@downfield Thats a decent rate, I’m shocked they hadn...
By Papahuhu , 2 hours ago
-
-
RE: Should Households Who Can Afford It Pay More for Energy to Help Those Who Can't?
@batpred I mentioned earlier that targeting the payment...
By Toodles , 3 hours ago
-
RE: Why don't people choose heat pumps?
@rob-of-york The Panasonic units also have a microscopi...
By Toodles , 5 hours ago
-
RE: Adventures in heat loss calculations
@toodles thanks! So as suspected, around a doubling of ...
By SusannaSaunders , 6 hours ago
-
Six books in three years and I think I’ve now covered j...
By Mars , 6 hours ago
-
RE: Grant Aerona3 13kw - Buffer Tank - Heating Journey
@heymikey Well done in achieving as nearer a match acro...
By Toodles , 13 hours ago
-
Grant Aerona - Weather Compensation and Schedules
Im trying to set up a friends Grant Aerona. The WC curv...
By bontwoody , 1 day ago
-
RE: Air-to-Air Heat Pumps & Air Conditioning: UK Heating and Cooling Q&A
@jamespa I agree, the efficiency of Cosy Cooler ought...
By Rob of York , 2 days ago
-
RE: How much of your renewable and home setup would still work if the internet went down?
I think you're right! 🤨
By Transparent , 2 days ago
-
RE: Renewables & Heat Pumps in the News
ECO4 muddies the water somewhat, and then some. I thi...
By cathodeRay , 2 days ago
-
RE: Vaillant ecoTEC Plus - Flow Temp and Set Up
If there is a drain nearby that's exactly what I would ...
By JamesPa , 2 days ago
-
I think that CCGT plant in Lingen is more likely to suc...
By Transparent , 3 days ago
-
RE: Heat Geek installations: share your experiences
@l8again fwiw my experience (Valiant but not with heat ...
By JamesPa , 4 days ago
SPONSORS
