How Do I Bleed My Radiators to Remove Trapped Air?
CANRO Heating & Cooling provides expert advice on this common question for homeowners in Greater Vancouver. If you need professional service, our licensed technicians are available across the region.
Answer: How Do I Bleed My Radiators to Remove Trapped Air?
Bleeding radiators removes trapped air that prevents proper heating. You will need a radiator key (available at hardware stores) and a cloth or small container to catch water. Turn your heating system on and let it run for 15 minutes. Starting with the lowest radiator in your home, locate the bleed valve at the top corner. Insert the radiator key and turn it counterclockwise slowly — you will hear a hissing sound as air escapes. Once water starts to trickle out steadily, close the valve by turning clockwise. Check the boiler pressure gauge — it may have dropped during bleeding, so repressurize to 1 to 1.5 bar if needed.
Related Services from CANRO
CANRO Heating & Cooling provides comprehensive boiler service across Greater Vancouver, including diagnostic inspections, emergency repairs, scheduled maintenance, and system replacement. Our Red Seal certified technicians service all major brands and carry OEM parts in their vehicles. For emergency service related to this question, call (604) 359-1081.
When to Call a Professional for Help
While understanding the answer to this question is helpful, some situations require professional expertise. If you are uncertain about any step, if the problem recurs, or if you notice any signs of gas odour, carbon monoxide, or electrical hazards, contact CANRO Heating & Cooling immediately. Our licensed technicians across Greater Vancouver can provide expert diagnosis and repair. We recommend professional service for any issue that involves gas, electrical components, or safety-critical systems.
Safety Reminder
If you smell gas, suspect carbon monoxide or believe there is an immediate danger, leave the property and contact emergency services or the appropriate gas emergency authority. Do not remain inside — exit the building immediately and call for help from outside.