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 24, 2026
@lucia It would be interesting to know the volume of your system and typical flow temperature. Bob
Hummm......larger system volume would have more energy stored in the water so the bulk average water temperature reduces less when the defrost cycle h...
This is a very complex problem. I know with a gas boiler increasing the flow temperature makes the device burn more gas, but how does a heat pump ma...
Hello, TL;DR I think you have the weather compensation set too high at low OAT, try dropping the upper setting to 50C. I've been going over the d...
oh that's a shame. I was hoping I could learn something about the minimum duty your system can handle so I can optimise my design for low duty operat...
Thank you for the quick reply. I thought I saw you mention you had a plate exchanger in your system, which is why i asked if you had a drawing. Do y...
Hello there, I'm new to the forum. I see that cathodeRay has made many posts about his Midea ASHP does not seem to behaving properly, there are sever...
Mars hello there. I plan to go air to water and then into a home made HVAC air filtration "thing". I'm not really sure how it's all going to go toge...
Hello, new member here. I'm about to start my ASHP journey by using one to heat my garage/workshop space, I thought this might be a good place to st...
SPONSORS
Degrees of Separation
Latest Posts
-
Yesterday, Thurs 16th July, the Planning Committee for ...
By Transparent , 8 minutes ago
-
I don't remember the manufacturer name, but I saw simil...
By bobflux , 36 minutes ago
-
RE: Indevolt Batteries UK Support & Info Thread
I suspect they have understood but don't want to derail...
By JamesPa , 42 minutes ago
-
RE: Weather compensated secondary circuits with Biomass
UFH is ideal to get max efficiency with a heat pump, bu...
By bobflux , 42 minutes ago
-
Sun getting through the windows: if you don't have sola...
By bobflux , 1 hour ago
-
RE: Comms and power cabling to outside unit
@jamespa I can only guess the issue is with cost of ...
By Papahuhu , 3 hours ago
-
RE: Vaillant Arotherm Pro vs new Plus
when our system was installed in September 2 years ago ...
By Judith , 16 hours ago
-
RE: Rate the quality of your heat pump design and installation
I had a Heat Geek lead install by Green Heat Norfolk. T...
By Orlando , 1 day ago
-
RE: Mitsubishi Ecodan FTC6 settings
While @F1p's dongles are great, the FTC can do this its...
By RobS , 2 days ago
-
RE: Samsung heat pump - data cable issue
If it's a data cable, current will be minuscule, voltag...
By bobflux , 2 days ago
-
RE: MCS Quality Audit – Has Anyone Had One? Did It Lead to Remediation?
I got hit with an RHI audit in 2022. It was far from c...
By Abernyte , 2 days ago
-
RE: Electricity price predictions
@papahuhu Groucho Marx had something to say about no...
By Toodles , 2 days ago
-
RE: Octopus Cosy Heat Pump Owners & Discussion Thread
@jamespa haha very true, although the engineer yesterda...
By swwils , 2 days ago
-
RE: What a difference a few degrees make.
Wow. Having accepted the challenge, I ran the cold tap ...
By Old_Scientist , 3 days ago
SPONSORS
