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 ...
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...