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SCOP with DHW

 
Air Source Heat Pumps (ASHPs)
Last Post by DavidAlgarve 6 minutes ago
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 DavidAlgarve
(@davidalgarve)
Reputable Member Member
Joined: 2 years ago
Posts: 154
Topic starter 21/11/2025 9:53 am  

Mitsu PUHZ -SW120Y + EHSC-VM2D

I am still in a trial period with Havenwise and have several misgivings, but it has highlighted one aspect, i.e. the difference in SCOP for heating (i.e. November 3.2) as opposed to DHW which is stated as 2.2.

I understand that there are two settings for DHW heating and I am on the more economical of the two. DHW heating being called for at night, when there is a reduced tariff (actual time chosen by Havenwise), and peak power approaches 4kW but is relatively short duration.

I do appreciate that DHW consumption amounts to a little over 10% of the total

I do call for a high water temperature of 52C mainly due to long poorly insulated pipe runs that I can do little about.

All things considered, are there any steps I can take to improve the SCOP for DHW?



   
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