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Next steps on my ASHP journey: Radiators and Pipework

 
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Air Source Heat Pumps (ASHPs)
Last Post by JamesPa 53 minutes ago
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JamesPa
 JamesPa
(@jamespa)
Illustrious Member Moderator
Joined: 3 years ago
Posts: 5372
07/09/2026 4:36 pm  

Posted by: @rob-of-york
↑

I plan on changing all the 55-year old radiators, so a flow meter can go in when the system is drained down for that. Then I'll have complete piece of mind about what flow rates can be achieved, before having a heat pump installed.

Great.  You just need to find a way of cranking up your circulator (if necessary) until either the target flow rate is reached or its too noisy, or playing with TRVs/LSVs to force most of the flow down one arm if necessary with the same objective


4kW peak of solar PV since 2011; EV and a 1930s house which has been partially renovated to improve its efficiency. 7kW Vaillant heat pump.


   
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