
Last seen: Jun 19, 2025
@sandman1600 Hi. Without knowing more about your system for a quick and dirty fix I would lower your flow temperature to 35C and leave the heating ...
@jamespa @bami Just to clarify, I have already done what James has suggested. My water law settings are as low as I can use.
@broadsman I run mine on water law but with regards thermostat as a limiter on my warmest room so the controller does display HEAT.
@eliuccio some people fan assisted radiators to good effect to get extra output. They are expensive but there are diy options which aren’t.
@bami I think a lot of people use heatpunk as a heat loss calculator. To me 6kW would sound about right but this is an area where installers regularly...
@bami yes. 8kw = 8000w I would change the areas in the heat loss calc to the correct ones and recalculate the heat loss. It doesn’t mean that it ...
@bami I think if the heat loss documentation matches a 8kW heat pump then you have a very good case as "not fit for purpose" Alternatively if that i...
@bami thats helpull. Did you also get the heat pump spec and heat loss calculation?
@bami Is there some reason the room would have a lot of moisture in it overnight? If not that would kind of suggest the double glazing panel has blown...
@bami I have a large bay in my lounge and whilst the glass is cool, I dont notice a massive heat loss when the curtains are drawn. It might be worth c...
@jamespa Similarly I cant make the case for another 5kWh expansion. However its difficult to quantify how much a small battery saves when using solar ...
@bami My feeling is that the picture shows an expansion tank not a buffer, so that is good. I take it you were not given the specs and system diagram ...
- 22 Forums
- 2,089 Topics
- 45.9 K Posts
- 23 Online
- 3,375 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
-
RE: My misgivings about installing ASHP and solar panels via the ECO4 scheme...
@bontwoody Then I must apologise. Havenwise sounds to...
By Dwynwen , 4 minutes ago
-
RE: Who's your electricity provider and what's your tariff?
I don't (yet), but my PW3 is due to be installed shortl...
By Old_Scientist , 4 hours ago
-
RE: MCS and NAPIT complaints process
@chrislay, is your heat pump complaint still unresolved...
By Mars , 8 hours ago
-
RE: ASHP Install from hell - help please
@saf1973 I’ve been going through old cases on the forum...
By Mars , 8 hours ago
-
RE: Getting the best out of a heat pump - is Homely a possible answer?
@benson I have gone down the Home Assistant and wavesha...
By Grantmethestrength , 19 hours ago
-
RE: RDSAP10 effect on existing heat pump EPC rating?
@aaron There's the rub, the database does not list my ...
By AF1 , 20 hours ago
-
RE: Renewable Heating Hub Homeowners' Q&A Podcast
@editor excellent news, congratulations and well deserv...
By ASHP-BOBBA , 21 hours ago
-
RE: Vaillant AroTherm Plus 7kW
Depends on the flow temperature; the Czech data sheet i...
By JamesPa , 1 day ago
-
RE: Renewables & Heat Pumps in the News
Thanks @lucia I look forward to some technical facts as...
By Judith , 1 day ago
-
RE: Commencing on an ASHP Installation Process
Yes, it's "doable" if everything goes to plan, they arr...
By Old_Scientist , 2 days ago
-
RE: How not to install a heat pump
You are right. Thinking on this has evolved over the p...
By JamesPa , 3 days ago
-
@ashp-bobba ‘Wattson, how many grammes of Co2 are you r...
By Toodles , 3 days ago
-
RE: DHW SET UP with Samsung gen 5
Thats good news indeed, you are very likely almost ther...
By JamesPa , 3 days ago
-
RE: Plate heat exchanger considerations
As far as I can tell my vented system would have a peak...
By Scalextrix , 3 days ago
-
RE: Air Changes per Hour - ACH and the MCS requirement
There have been a few discussions dotted around (e.g. I...
By Declan90 , 3 days ago
-
RE: Heat Pump Servicing & Maintenance – Good Value or Rip-Off?
Having made some enquiries locally I have found a compa...
By Morgan , 3 days ago