The UFH seems to be working well in the new build with the minor drawback that we get serious water hammer issues as the room thermostat closes the manifold shut off valve. As the UFH heating is on E7 this usually occurs at some point in the early hours of the morning and wakes up everyone in the house. I have been informed that this is no longer acceptable .
I notice various companies selling water hammer arresters. - I do have a spare location on the UFH manifold that would allow me to fit one close to the valve.
Are these the right thing to use or are there better solutions ? Would I do better to just turn off the pumps while the valve closes ?