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Clivet ASHPs and weather compensation

 
Air Source Heat Pumps (ASHPs)
Last Post by Mars 2 hours ago
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 ambris
(@ambris)
New Member Member
Joined: 3 hours ago
Posts: 1
Topic starter 27/09/2025 8:52 am  

I have dual 12kw Evo Edge heat pumps and this is my first time observing how they operate as they were installed in late spring. There is a weather compensation curve which I understood means the flow temperature should vary depending on the outside temperature. However I have observed that the flow temperature continues to increase to 50c for example, even when the weather compensation curve is targeting 37c. The system is using 3kw plus of electricity constantly, which is going to get expensive if we can't achieve "low and slow" running and only rely on the thermostat dictating heating demand. What am I missing here?



   
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Mars
 Mars
(@editor)
Illustrious Member Admin
Joined: 5 years ago
Posts: 3479
27/09/2025 9:11 am  

There's definitely something not right there. @simon-w, can you please provide some insights on what could be wrong.


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