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Water hammer

 
Thermostats, Volumisers, Buffer Tanks, TRVs, Pumps, Piping, Valves, Radiators & Controls
Last Post by JaynieQ 2 hours ago
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 JaynieQ
(@jaynieq)
Trusted Member Member
Joined: 12 months ago
Posts: 35
Topic starter 29/12/2025 11:05 pm  

Evening everyone
I have a very long story but to cut it short:

we have a Vailant Ecotherm ASHP that was installed 14 months ago.

From the start we have had issues with water hammer that our installer has tried and failed to rectify with arrestors. In the past few months it has got worse and is driving me crazy. 

Our property shares water supply with a farm and another house. This is historic and goes back to when the 3 properties were part of the same estate. When they were sold on as separate dwellings, the water supply was not altered. 

I have no technical expertise and frankly don’t know where to begin to get this problem sorted. Do I need to find  a plumber who has specialist knowledge of ASHPs?

I’d be very grateful for any suggestions. 
Thank you. 

 



   
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