
Last seen: Sep 17, 2025
@mike-h Yes, totally agree about false reassurance Mike. I was thinking that an error would always be in the same direction but I guess that doesnt ha...
@johnnyb No problem, glad it helped. So what flow temperature were you using on the heating last night? UFH is known to have quite a bit of hysteresis...
@mike-h Im not sure I follow you Mike. I can see that external temperature probes may differ from internal, especially if there is a long pipe run. ...
I think the low dT is a consequence of the low flow temp you are trying to use, 1.5-2 is small but although a dT of 5 is often cited as optimum, i don...
@johnnyb Thanks :-). I’m off out on a Xmas do tonight but will sit down and try to answer as many of your questions as I can tomorrow.
@johnnyb This formula does seem a bit contenious, but the results do seem to me to be closer to what is expected (obviously not to everyone though see...
@dunlorn @mike-h So the original post comes from the Heat Pumps UK facebook site, reference to it are shown below. The seem to think that the si...
@johnnyb So I think what might be happening is at the very low flow temperature you are trying to use, you cannot get the UFH to release enough energy...
@dunlorn @mike-h I’ll try and get the original post where this was stated as an excerpt was passed to me. unfortunately I don’t find that the Sa...
Hi @johnnyb I have the same heat pump as you but use radiators not UFH. You should be able to run the UFH on a lower flow temperature than radiator...
@dinhp Ive just come across some info that improves your SCOP. I was dividing your Generation kWh / Usage kWh to get COP, but it appears Samsung hav...
@pressure Well mine was a new installation in this house, but if upgrading I would definitely install anti frost valves if you are using antifreeze so...
- 26 Forums
- 2,177 Topics
- 47.9 K Posts
- 46 Online
- 5,748 Members
Join Us!
Podcast Picks
Latest Posts
-
RE: Testing new controls/monitoring for Midea Clone ASHP
I agree, the video lacks context and detail, and the Mi...
By cathodeRay , 1 hour ago
-
RE: Repiping and Reconfiguring our Heat Pump System Including Removing the Buffer Tank
@heacol maybe you can figure why mines vibrating the pr...
By AdamK , 1 hour ago
-
RE: Powerwall 3 or Myenergi or something else?
@adamk what you need is enough battery size to cover 3 ...
By Judith , 1 hour ago
-
-
RE: Say hello and introduce yourself
@jarlatheoin do put the MVHR in early it’s not an easy ...
By Judith , 2 hours ago
-
RE: How to Zone with a Single Room with UFH
We have exactly what you describe, one utility room wit...
By Judith , 2 hours ago
-
RE: Who's your electricity provider and what's your tariff?
@agentgeorge Come the Ist of October, the Cosy cheapest...
By Toodles , 3 hours ago
-
RE: Boxt Heat Pump Installation Experience
@ashfp Mine does have a buffer tank. That was my experi...
By Andrew J H , 15 hours ago
-
RE: Which temperature sensor for a Steibel buffer and Ecodan?
@ashp-bobba might be able to help as an Ecodan expert.
By Mars , 1 day ago
-
RE: Help me keep the faith with my air source heat pump installation
I'm sure you are right, I was just trying to understand...
By JamesPa , 1 day ago
-
RE: Preparing for 2nd winter in new build house.
Yuch! So that's basically just an on/off control. I...
By Transparent , 2 days ago
-
Good day everyone. I'm new here and have a few question...
By Edin67 , 2 days ago
-
RE: MCS certificate SCOP vs real-world performance
That may be contributing to lower than expected SCOP. ...
By JamesPa , 3 days ago
-
-
RE: Mitsu PAR-WT60R Wireless Controller - options
How it does it's job is something of a mystery although...
By Abernyte , 3 days ago
-
RE: How to choose Towel Rails for an ASHP
@rob-nezard yes absolutely. Here is the link and a pho...
By GrahamF , 5 days ago
-
@mixergy Thanks for the update, I would appreciate some...
By bontwoody , 5 days ago
-
RE: Is Your Broadband Router the Weak Link in Your High-Tech Home?
Unfortunately I'm not that well connected 😂 ...
By Scalextrix , 5 days ago
-
RE: A Customer's Lessons Learnt from a Heat Pump Installation in a Large House
It is interesting to see what our new Grant Aerona 290 ...
By GrahamF , 5 days ago