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Mitsubishi Ecodan R290 10kW performance

 
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Air Source Heat Pumps (ASHPs)
Last Post by Ecoste 1 hour ago
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 Ecoste
(@ecoste)
Active Member Member
Joined: 22 hours ago
Posts: 8
Topic starter 28/10/2025 10:48 am  

@jamespa Thank you, just need to get it fixed!



   
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dgclimatecontrol
 dgclimatecontrol
(@dgclimatecontrol)
Estimable Member Member
Joined: 3 months ago
Posts: 51
28/10/2025 11:00 am  

@ecoste From the graphs I wonder why its heating water DHW to 55C from midnight, is that when you want it super hot? Should take around 45 minutes to heat the 200L tank. A 10kW heat pump uses max 2.5kW/h if flat out  I think there are back up heaters being energised, but hard to tell without seeing the set up



   
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 Ecoste
(@ecoste)
Active Member Member
Joined: 22 hours ago
Posts: 8
Topic starter 28/10/2025 12:47 pm  

@dgclimatecontrol I am on an Octopus Intelligent Go Tariff, so I tend to heat my water when that starts and then heat the house for the remaining duration of the low cost time. There is very little temperature drop (2C max) in the water by next morning when I need it.

There is an immersion heater but I am not aware of any other back up heaters, where would they be located?



   
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