How to fix water hammer?

Bob9

Ive got banging noises when I open and close most of the taps in my 2 story house. I believe that the closing tap noise is generally thought to be water hammer and that the opening tap noise is usually considered to be caused by air in the pipes.

Ive bought a few Surgex water hammer arresters from Bunnings but they don't seem to do much at all. The water company sent someone to check water pressure and he said its air in pipes so switch off water and run all taps to clear it.

Ive tried this a few times but still getting noises.

To fix air in the pipes, is there a proper order to open and close the taps when you've a 2 storey house and an evaporative air con unit  upstairs ? 

Thanks !

EricL

Hello @Bob9 

Thanks for sharing your question about your plumbing in the house. If you have conducted an air flushing procedure and the hammering comes back after a few days, odds are there is a leak in your plumbing system. I propose trying to find out first if any of your taps are leaking and this includes your laundry and cistern taps.

My next suggestion is to install the following devices in your plumbing system. For your laundry set, I suggest putting in Sioux Chief 20mm Chrome A Size Wash / Dish Water Hammer Arrestor on the cold line of your washing machine. 

For the kitchen sink and bathroom taps, I recommend the Sioux Chief 15mm Size A Hydra-Rester Water Hammer Arrestor With Conetite Tee. Place the arresters on the cold line of those taps. 

Once the arresters are in place it should sort out your water hammering. Please note that the installation of the arresters must be done by a licensed plumber.

If you need further assistance, please let us know.

Eric