How do I bleed air from my baseboard heaters?

To bleed air from your baseboard heaters, first turn off your heating system and allow it to cool down. Locate the bleed valve, usually found at one end of the heater, and use a radiator key or a flathead screwdriver to turn it counterclockwise. As you open the valve, be prepared for some water to escape; once the water flows steadily without sputtering, close the valve. Finally, check your boiler pressure and add water if necessary to maintain the appropriate level.