Hello,

Since cold weather has arrived we started to heat. Every time when the thermostat switch off a couple of moments later there is a huge banging noise and the whole radiator and pipe system shakes in the flat. First we thought it was a boiler issue but the pressure is normal and a guy who came from the electric company told us it worked well. We let the air come out from radiators too.
Any idea?

Thank you,

Sounds like you may still have some air