Renewable Heating Hub Heat Pump Forums

Search with Wattson
Forums
Renewable Heating
Air Source Heat Pum...
Spent £1,000 Trying...
 
Notifications
Clear all

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!

Spent £1,000 Trying to Fix My Oversized LG ASHP, Now Considering Vaillant or Ideal. Advice Needed.

 
Page 3 / 3
Air Source Heat Pumps (ASHPs)
Last Post by JamesPa 3 months ago
27 Posts
7 Users
3 Reactions
1,529 Views
RSS
JamesPa
 JamesPa
(@jamespa)
Illustrious Member Moderator
Joined: 3 years ago
Posts: 5123
08/04/2026 6:29 pm  

@batpred

You are very welcome.

Daikin 'customer support' was essentially non-existent when I was looking for my heat pump.  Basically the answer to any question was 'ask your installer'.  I simply don't understand this attitude.  Fortunately other manufacturers are available!


This post was modified 3 months ago 4 times by JamesPa

4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.


   
ReplyQuote
Batpred
 Batpred
(@batpred)
Noble Member Member
Joined: 2 years ago
Posts: 1066
09/04/2026 10:32 am  

Posted by: @jamespa
↑

If you say a bit more about house size and construction we its possible to ballpark the capacity of heat pump you need, better still if you have records of gas usage.  

Our gas consumption (heating, showers, gas hob as electric oven) was: 

December 25: 1914 kwh

Jan 26: 2231 kwh

Feb 26: 1667 kwh

Mar 26: 1767 kwh

I described our house insulation before here.  We also converted the loft 5 years ago (long story, but we switched to a self managed conversion). But I can confirm the insulation is better than building regs require. 

 


This post was modified 3 months ago by Batpred

8kW Solis S6-EH1P8K-L-PLUS hybrid inverter; G99: 8kw export; 16kWh Seplos Fogstar battery; Ohme Home Pro EV charger; 100Amp head, HA lab on mini PC


   
ReplyQuote
JamesPa
 JamesPa
(@jamespa)
Illustrious Member Moderator
Joined: 3 years ago
Posts: 5123
09/04/2026 11:27 am  

@batpred ok

 

My energy delivered in kWh was as follows:

Dec 2777

Jan 3468

Feb 2574

Mar 2390

 

House is heated to about 21 and it's loss, measured by gas boiler/heat pump, is 7kW.  I can rationalise this with surveyed figures by assuming ach=0.5

Unless you don't keep yours warm, your loss is quite a bit less, possibly a match eg to the 5kW Vaillant or if not the 7.  

Assuming you do keep the house reasonably warm then if you have detailed records plot daily consumption against average daily outside temperature (or degree days) to get a better indication.


This post was modified 3 months ago 7 times by JamesPa

4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.


   
ReplyQuote
Page 3 / 3
Forum Jump:
  Previous Topic
Next Topic  
Share:

SPONSORS

Join Us!

Installer Finder

Degrees of Separation

Latest Posts

SPONSORS

Click to access the login or register cheese
Protected By
Shield Security PRO