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Setback savings - fact or fiction?

 
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Air Source Heat Pumps (ASHPs)
Last Post by cathodeRay 2 hours ago
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Toodles
 Toodles
(@toodles)
Illustrious Member Contributor
Joined: 3 years ago
Posts: 2333
10/12/2025 4:57 pm  

@adamk It seems to me that the writers of some optimisation software endeavour to raise the fabric temperature by ‘hot-housing’ during the TOU cheapest rate hours to reduce consumption during more expensive times of the day. This scheme does go against the grain somewhat if one has batteries to ride out the expensive times; I stopped using Homely Smart+ settings for this very reason. Hot housing to an uncomfortable level to save using energy at other times doesn’t seem sensible then. Regards, Toodles.


Toodles, heats his home with cold draughts and cooks food with magnets.


   
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cathodeRay
 cathodeRay
(@cathoderay)
Illustrious Member Moderator
Joined: 4 years ago
Posts: 2445
Topic starter 10/12/2025 5:14 pm  

@adrian — can you expand a little, and show your actual workings, as I don't fully understand your method? Are you really using °K (Kelvin)?

Also bear in mind my house is not well insulated (it's an old listed cottage, limited scope for insulation once the obvious has been done), but it probably does have a relatively high thermal mass for its size. 


Midea 14kW (for now...) ASHP heating both building and DHW


   
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