Renewable Heating Hub Heat Pump Forums

Search with Wattson
Forums
Renewable Heating
Air Source Heat Pum...
Air to Air
 
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!

Air to Air

 
Air Source Heat Pumps (ASHPs)
Last Post by batalto 5 years ago
3 Posts
2 Users
4 Reactions
1,952 Views
RSS
 batalto
(@batalto)
Noble Member Member
Joined: 5 years ago
Posts: 1092
Topic starter 13/10/2021 11:03 pm   [#136]

Some of you might be aware, but I just moved to octopus Go and I now have super cheap nighttime power; 5p/KW from 00.30 to 04.30. currently I am running the central heating then and filling my battery. However a thought occurred to me, should I set my AC to come on at that time and crank out hot air instead of using the radiators. Would this be a more efficient way to heat a large room overnight Vs the central heating?

Really interested to hear peoples thoughts on this one. I'd need to relocate my thermostat to a "cold" room so the other rooms were still warmed, but it seems to me a much better way to push heat around given the lower costs.


12kW Midea ASHP - 8.4kw solar - 29kWh batteries
262m2 house in Hampshire
Current weather compensation: 47@-2 and 31@17
My current performance can be found - HERE
Heat pump calculator spreadsheet - HERE


   
Quote
 Derek M
(@derek-m)
Illustrious Member Member
Joined: 5 years ago
Posts: 4425
14/10/2021 12:46 am  
Posted by: @batalto

Some of you might be aware, but I just moved to octopus Go and I now have super cheap nighttime power; 5p/KW from 00.30 to 04.30. currently I am running the central heating then and filling my battery. However a thought occurred to me, should I set my AC to come on at that time and crank out hot air instead of using the radiators. Would this be a more efficient way to heat a large room overnight Vs the central heating?

Really interested to hear peoples thoughts on this one. I'd need to relocate my thermostat to a "cold" room so the other rooms were still warmed, but it seems to me a much better way to push heat around given the lower costs.

Hi Batalto,

That is precisely what I do, only in reverse. I use the A2A ASHP to raise the temperature during daylight hours when I can power it from my solar PV system. I suppose for you it depends on the rating of your A2A compared to your A2W, and how you want the heat energy distributed. But don't forget, your A2A will not be as efficient when the outside air temperature is lower overnight.



   
👍
2
ReplyQuote
 batalto
(@batalto)
Noble Member Member
Joined: 5 years ago
Posts: 1092
Topic starter 14/10/2021 7:24 am  

@derek-m it's much smaller than our A2W. However it's in our main living space. I could easily time it to run for 4 hours at the low tariff point, so we have carry over into the morning. I might experiment with it.

As a note I set the batteries to charge last night and it seems to be a success. Currently running on battery as we speak with 75% left


12kW Midea ASHP - 8.4kw solar - 29kWh batteries
262m2 house in Hampshire
Current weather compensation: 47@-2 and 31@17
My current performance can be found - HERE
Heat pump calculator spreadsheet - HERE


   
👍
2
ReplyQuote
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