Ticking rads when system start/stops any clues?

Jamie Hall

my friend -- the ticking is from the expansion and contraction either of the radiators themselves or the pipes leading to them. Sometimes you might be able to find a place where a pipe is actually contacting some wood (floor, beam, what have you) and maybe get a little space in there. Sometimes, with baseboards, there are spacers meant to let the element slide in the housing which are missing. etc. ...

Good luck

ross_21

my rads are ticking on start/stop how can this be resolved?

Brad White_184

However, Ross

you can mitigate the ticking somewhat by installing outdoor reset (ODR) and using constant circulation. The wide swings in water temperature will be tempered a great deal and you will reap energy savings in the bargain.

The use of on-off control is principal to the effect you are seeing, as Jamie pointed out.

Do start by identifying any obvious "rubbing points" of course. There are also plastic sleeves, inserts and cradle seats. A bit of polyethylene such as a coffee can lid (as if anyone still buys canned coffee, especially in the UK), makes a nice slide insert in a pinch. Do try those things but keep going with ODR control for that and other reasons.

Good Luck!