Just installed a new washer and the solenoids shut so quick that I got a severe water hammer thunk coming from under my house in the crawl space. I saw that the two long water lines feeding my washer are hung on copper hangers but are in no way constrained 'up' or laterally. I added some wood supports and firmly attached the pipes to these new pieces and now the water hammer is significantly reduced.
Is there any downside to this modification?
Is there any downside to this modification?