Homeowners can purge air from a hot water boiler by using a screwdriver or radiator key to turn the radiator valve and slowly let the air out. They should hold a cup or container under the valve, as purging air causes it to drip water.Continue Reading
When radiators and hot water boilers fail to heat up, the culprit is often air. Air can get trapped in the radiator, which prevents heat from distributing evenly. This is an easy problem to fix. The following process only takes a few minutes and involves minimal equipment.