
Last seen: May 24, 2025
@johnnyb I think potentially you may be right that 8kW will be too large for your heating although the 5kw may struggle with DHW. Can I ask if you...
@scalextrix When do you intend taking the plunge? Do you have next winter to work with to get some good data? If you have the house area and a feel ...
@scalextrix I think what you are describing is exactly why I am so sceptical of room by room assessments and more supportive of previous use estimates...
@guydeb I'm just in the middle of constructing a 40m2 extention myself and looking at the amount of insulation required now I expect the heat loss to ...
@guydeb Yes. No problem running just UFH from an ashp. The issue I think would be the very low heat loss in a 40m2 new extension. How sure are you tha...
@matwin I believe the degree days calculation is an accurate method of assessing heat pump size. Im not sure how much detail the YouTube video goes i...
@scalextrix As @JohnMo says though at lower temperatures they need to be bigger so that will probably be the worse performing one in the CH. Also they...
@scalextrix I cant help with the CH side but you might look at the plate heat exchanger used with a mixergy cylinder to get a handle on the DHW. By al...
@chandykris Thats a fair point and something Ive considered. I do keep one eye on ebay for any reduced price battery packs 🙂 Can you post the figu...
@chandykris We seem to have similarly sized systems and yes I found Go to be a better choice than cosy with a couple of minor months difference. I r...
@editor not via the WC curve but as @old_scientist mentioned the setting is in the FSV menu so I was able to set that to 19C rather than it’s default ...
@editor Thanks Mars. Interesting talk. I will just point out however I don’t actually run my heat pump at 40C when it’s 17C outside! Don’t know why I ...
- 22 Forums
- 2,069 Topics
- 45.3 K Posts
- 29 Online
- 3,341 Members
Join Us!
Trusted Installers
Struggling to find a reliable heat pump installer? A poor installation can lead to inefficiencies and high running costs. We now connect homeowners with top-rated installers who deliver quality work and excellent service.
✅ Verified, trusted & experienced installers
✅ Nationwide coverage expanding
✅ Special offers available
Latest Posts
-
@bontwoody We do have an EV but I've been on Agile for ...
By JohnnyB , 23 minutes ago
-
RE: Getting the best out of a heat pump - is Homely a possible answer?
As I'm back on the forum to ask more questions I though...
By JohnnyB , 38 minutes ago
-
RE: Confusion about heat pump sizing
We’ve published a deep dive into heat pump sizing, and ...
By Mars , 3 hours ago
-
We’ve published a deep dive into heat pump sizing, and ...
By Mars , 3 hours ago
-
RE: Kensa GSHP finally installed - now to start the optimisation process
Just had a quick scan of the manual and should be weath...
By Johnmo , 16 hours ago
-
RE: Potentially more choice including air to air heat pump grants
Hi all, I agree, the consultation documents are alway...
By madbilly , 16 hours ago
-
RE: Commencing on an ASHP Installation Process
I think those are pretty much the standard figures that...
By JamesPa , 23 hours ago
-
RE: Load Compensation and Weather Compensation
I think that maybe what the adia thermal system does, b...
By JamesPa , 23 hours ago
-
RE: Enabling WiFi: Samsung ASHP on Smart Things App
@old_scientist @profzarkov thanks to you both for the v...
By Grahamh-uk , 24 hours ago
-
RE: Nibe F2040 periodic warm water increase fails
@tribol here's an official reply from NIBE on your case...
By Mars , 1 day ago
-
RE: Antifreeze top up for my heat pump - is this a rip off?
Hi guys, let’s keep this thread focused and constructiv...
By Mars , 1 day ago
-
RE: Vaillant & OVO partner up to offer Heat Pump Plus
@ecodan-efficiency On the other hand, the fact that the...
By Richard24738 , 2 days ago
-
RE: How accurate was your heat loss survey?
@scalextrix for our house 1950s detached the air leakag...
By Judith , 2 days ago
-
-
RE: Air Changes per Hour - ACH and the MCS requirement
@matwin If you plan to commission one it might b...
By JamesPa , 3 days ago
-
RE: Jokes and fun posts about heat pumps and renewables
In a similar vein, this recent spell of sustained good ...
By Majordennisbloodnok , 3 days ago
-
RE: Home energy storage & battery register
By the end of next month... 8 kW PV + Tesla Powerwall...
By Algienon , 3 days ago
-
RE: Various different approaches to battery storage.
I thought I'd share my story/journey and experiences he...
By Old_Scientist , 3 days ago
-
RE: Renewables & Heat Pumps in the News
Here on the Forum we're going to need to be increasingl...
By Transparent , 4 days ago