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: Jan 5, 2026
During cold spell last week, i first started with setback, however the usage turned into 5/6kw per hour and house wasnt at ambient temp until late in ...
anybody with a daikin, do ye know if BUH is enabled and runs during space heating when unit is in defrost mode. So far in December mine has run for 4 ...
So was away in Scotland since Thursday and was shocked at my usage on app. Saturday morning i was pulling 7kw at 7am, seems BUH was running, is that p...
Is the BUH used during defrost cycles, had 7kw pulling yesterday morning at 7am.
Speaking of defrosts. Anybody know how check defrost settings on daikin altherma low temp split 2. 1 frost stat left setting from factory incorrectly ...
@derek-m unfortunately must be defrosting twice an hour. Crazy to go from2.5 to 5kw per hour an hour apart.
why would mvhr cause my usage to double? See the chart when no heating running before 12pm. My usage less than0.3kw per hour, thats with mvhr running ...
Same as me. heatpump running and mvhr. Derek have to disagee no way was it mvhr causing this. I have meter for heat pump. Must have been defrost. Temp...
Currently the warmest room the kitchen has been getting to 22/23, others 21, i have just been altering length of time heating is on for, probably 1pm-...
@cathoderay My heat pump is running for 9hours straight and i can see by compressor starts that at below9-10deg, i have zero cycling. could be just mi...
SPONSORS
Degrees of Separation
Latest Posts
-
RE: Where heat loss surveys seem to go against practical reality
@rob-of-york — thanks again for posting in such such co...
By cathodeRay , 21 seconds ago
-
RE: Next steps on my ASHP journey: Radiators and Pipework
@bobflux The hydraulic simulator is very interesting...
By Rob of York , 17 hours ago
-
RE: 7kW EV Charger Options Advice
Thanks. Yes, we have patchy 4G. The only option we had ...
By Rusty , 23 hours ago
-
-
RE: Being screwed over by Volkswagen Audi Group
Thanks, @batpred. That integration is the one I have in...
By Majordennisbloodnok , 2 days ago
-
RE: How Accurate Is My DIY Heat Loss Calculation?
@batpred I suspect it will be more this year. I had 9 ...
By AndrewJ , 2 days ago
-
RE: Surface mount or bury primaries for heat pump installation?
@jamespa It's rusting 🙂
By tomasmcguinness , 2 days ago
-
RE: Glass lined Cylinder for private water supply
Thank you, once again, for your replies. Yes...
By ian33a , 2 days ago
-
It’s been out a few days and Amazon has already attache...
By Mars , 2 days ago
-
RE: Missing flow temperature in Heat Geek proposal
Yes, and this is another point I agree. We did find a f...
By Batpred , 2 days ago
-
RE: Problems with sizing a replacement for a Viessmann Vitocal 200-S
A very good point. In effect, the DHW pipework is an em...
By cathodeRay , 2 days ago
-
RE: Solar Power Output – Let’s Compare Generation Figures
@tim441 Here are those same three month periods for 202...
By Toodles , 4 days ago
-
RE: Adding additional Solar Panels to a DC coupled battery system
@transparent thank you for your reply above. As alway...
By Old_Scientist , 5 days ago
-
RE: Adventures in heat loss calculations
@rob-of-york — thanks for posting this, all very useful...
By cathodeRay , 7 days ago
SPONSORS
