Have vent size changed in the last year, reason why I ask a old lady of 84years old over road to me had her back boiler serviced by brit gas he said regs had changed and turned boiler of due to vent being to small, the size was 9 inches by 6 inches. The boiler had been serviced by brit gas for the last 15 years, the temp outside was - 7 was he trying to kill her.
So I change vent cover and make vent larger wot is 100cm squared in inches, the largest gas vent grill at b& q is 9inches by 9 inches.
By the way I did turn her boiler on, Yes i did say it was minus 7
So I change vent cover and make vent larger wot is 100cm squared in inches, the largest gas vent grill at b& q is 9inches by 9 inches.
By the way I did turn her boiler on, Yes i did say it was minus 7