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: Apr 16, 2026
@kev1964-irl At the outset just to say I am not a plumber or engineer so I'm on this site to learn! The discussions from the community of experts and ...
@cathoderay Thanks
@editor @kev1964-irl This discussion might be best had offline. Can you advise how we do this through the forum rather than swapping emails publicly? ...
@kev1964-irl Just seeing your post now. I'm also based in Ireland and have been through the process of solar (2021) and heat pump (2023). I too was in...
@editor @mikef For Comparison I have a Viessmann Vitocal 151-A which will have been installed 2 years next month. So far... Compressor Hours 5804 and ...
Just to add to the data collection.... East coast of Ireland. 185 m2 house - 100mm external insulation, 325mm loft insulation, 100mm underfloor insu...
For reference, I have a 10 kWh Viessmann 151-A installed almost exactly 1 year and am getting a SCOP of 4.7. Would be really interested to see how you...
@transparent Hope this is useful. (Note to self: clear weeds and paint gate!)
@transparent Having done some research on different HPs and manufacturers, I decided I wanted a Viessmann unit. However, the number of accredited inst...
Forum Handle: GC61 Manufacturer: Viessmann Model: Vitocal 151-A Type: ASHP Arrangement: Mono Area of Country: Ireland Home Type: 2-Storey...
Hi all, Gerry here. Located on the east coast of Ireland. I have a: . 4.2 kWh PV system (SE facing) . 40 kWh Nissan Leaf . newly-installed 10 k...
- 27 Forums
- 2,820 Topics
- 66.9 K Posts
- 1,957 Online
- 7,232 Members
Join Us!
Installer Finder
Degrees of Separation
Latest Posts
-
I suspect you would want to say it took the Spanish aut...
By Batpred , 11 minutes ago
-
RE: Why don't people choose heat pumps?
By the same measure we should be insisting that all gas...
By Batpred , 21 minutes ago
-
RE: How quickly would you want/expect heat recovery to take from setback?
True but .. because the room is colder dt rad to room i...
By JamesPa , 21 minutes ago
-
Got two or three heat pump quotes that don’t agree? Post them here.
One of the biggest sources of confusion I see on Renewa...
By Mars , 28 minutes ago
-
RE: Load Shift and Lifestyle Shift Complete - our journey has ended, for now
I do not disagree with the concept of wanting to live a...
By Batpred , 1 hour ago
-
RE: Buffer tank on a 2 x 14kw Ecodan system
@singlespeed I am going to put a temperature sensor on ...
By fosterl2 , 2 hours ago
-
RE: Grant Aerona - Weather Compensation and Schedules
@taffonthetaff Yes, I have now gotten to the bottom of ...
By bontwoody , 3 hours ago
-
RE: Grant R290 DHW Cycle Interuption
Occasionally our Grant R290 activates all three circuit...
By TaffontheTaff , 4 hours ago
-
RE: Peak Energy Products V therm 16kW unit heat pump not reaching flow temperature
@davec 47kwh for 3 days is very low, compared to what I...
By johnd , 5 hours ago
-
RE: Our 10 year old Grant heat pump failed
As I understand it it was working then stopped. More l...
By JamesPa , 9 hours ago
-
@pipcart, Wattson is back... please go to the homepage ...
By Mars , 10 hours ago
-
Do heat pump defrost cycles impair heat pump efficiency (COP values)?
The short answer is no, as far as I can see from data f...
By cathodeRay , 10 hours ago
-
RE: Are We Sleepwalking Into Another Race to the Bottom?
That is a good approach and an excellent result. For co...
By Judith , 1 day ago



