Repeated Air Locks in Radiators

[topcat9]

Hi All

We had two Radiators replaced upstairs in the summer( one with the position in the room changing hence new pipework ) the other just outside that room just replaced. Since firing up the heating for the winter I have noticed repeated air locks in two other radiators on the same floor at the far end of the house. I have repeatedly bled them and air comes out and the radiators get hot but after a day or so they go back to having airlocks in them.

I would appreciate any help. We have a Worcester Combination boiler.

Thanks

Topcat

 

[oilman]

Are you sure it's air? Have you put corrosion inhibitor in when the radiators were replaced? If not it's probably corrosion gases. Get some corrosion inhibitor in.

 

[topcat9]

Hi

Thanks for your reply. Yes i think it is air (but I'm not an expert). You can feel the air blowing out for about 2 mins and theres no smell to it. No Corrosion Inhibitor was put in though. One of the radiators that has the problem is only a year old. Would Corrosion Gases have built up ? And do they build up so fast repeatedley? If it continues after the inhibitor - Is it possible that theres a small leak in the new pipework ? Does air get in that way or would water just come out ? Or would it be the boiler that might be letting air in ? It's a worcester Combination 9.24. (regurlarly serviced).

I appreciate your help.

Thanks