Air in towel radiator

[Sammy1]

Our upstairs towel radiator keeps filling with air at the top. We had a new system boiler, new tank and new pipework fitted in October. The new tank is in the garage which is underneath the house and the new boiler is in the kitchen at ground floor level. We also had underfloor heating installed in our kitchen, the manifold is in the garage under the house. The 3 towel radiators come on when either the hot water is on or the underfloor heating is on, but not when the other radiators are on. We keep needing to let air out of the upstairs towel radiator and top the boiler up with water at the same time. The pipes in the walls and under the floors are no longer easily accessible. Where is the air coming from and how do we fix it? Please help!

 

[Chuck]

There have been numerous posts about air collecting in towel rails, is it because the top(s) of the towel rails are generally higher than any other rad top(s)?.

Seems plausible to me. Another, not mutually exclusive, possibilty is that the towel-rail design means that a relatively small amount of air results in a cold 'top rail' and people notice this when they put the towel on or take it off.

 

[Lou]

(Just bumping a few older threads, they will drop off what is new soon)

Check Out Plumbing News!