[OT] Air in central heating

["kw1816" <kw1816@xxxxxxxxxxx>]

Apologies for the OT post but does anyone have any suggestions for
the following ...

I've replaced a couple of radiators in a normal wet central heating
system, flsuhed it through and added inhibitor but I keep getting
air trapped in the first rad upstairs (which happens to be the
bathroom!) This has been hapening for over a month.

I'm having to bleed it at least twice a week otherwise we get no
heat in the bathroom which isn't making me the most popular person
at the moment ....

I've been round and checked/tightened every connection and bleed
valve in case air was getting in that way but with no improvement.

I had thought of replaceing the bathroom rad with a new one with an
auto bleed valve but we're planning on redoing the bathroom later
this year so I'd rather not spend any money on it :)

Any pointers ?

Ta
Kevin.