Forums

Forums
Renewable Heating
Air Source Heat Pum...
ASHP heat output mo...
 
Notifications
Clear all

ASHP heat output monitoring

 
Page 3 / 3
Air Source Heat Pumps (ASHPs)
Last Post by JamesPa 3 minutes ago
25 Posts
4 Users
3 Reactions
182 Views
RSS
 JamesPa
(@jamespa)
Illustrious Member Moderator
Joined: 2 years ago
Posts: 2713
14/08/2025 2:54 pm  

Posted by: @tim441
↑

@jamespa I run 24x7 with weather compensation. So flow temps will normally increase at night

Thats true.  Ideally the FT could go up a bit further ie above the level required simply to sustain target indoor temperature, but not all heat pumps support this; fortunately with a night time cheap rate the tarrif lows and the consumption highs coincide naturally!

Posted by: @tim441
↑

As my ashp was a retrofit I use simple digital thermostats to manage the target temp increase overnight. 

As it works for your case that's great.  My only reservation (in the more general case) is if thermostats are causing daytime cycling.  That's why the recommendation is generally to set them a couple of degrees above the target so that they act as limiters not controllers.  

Everything in this game is a bit house and person specific, the best general approach is almost certainly to start somewhere generically sensible, and tweak if there is a good reason.  Unfortunately plenty of heat pump setups reported here (which of course is a distorted subset of the total population) dont start somewhere sensible!

 

 

This post was modified 1 minute ago 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  
Topic Tags:  monitoring heat COP (1) ,

Currently viewing this topic 2 users ( cathodeRay, Tim441 ) and 2 guests.

Recently viewed by users: JamesPa 18 seconds ago, Carlo 25 minutes ago.

Share:

Join Us!

Login   Register

Podcast Picks

Latest Posts

Click to access the login or register cheese
x Powerful Protection for WordPress, from Shield Security
This Site Is Protected By
ShieldPRO →