how often should you bleed radiators

Radiators should generally be bled at least once a year, preferably in autumn, before the heating season starts, to ensure the heating system operates efficiently and provides even heat. However, if radiators feel cold at the top, take a long time to heat up, make bubbling or ticking noises, or have cold spots, they should be bled sooner. Some recommend bleeding radiators every few months as a preventive measure, and others suggest doing it twice a year. If radiators require bleeding more frequently than twice a year, it might indicate a problem with the heating system or boiler that needs professional attention.