How to Replace a Steam Radiator Air Vent

A radiator fan.
  • 2-4 hours
  • Intermediate
  • 200-1,500
What You'll Need
New vent
Teflon tape
Hand towel

If your radiator air vent gets blocked, it won’t be able to effectively flush the air out of your steam vent, thus causing a whole host of problems with your heating (basically meaning that you won’t be getting much heat, if any at all). If you notice that your steam radiator’s air vent isn’t whistling as merrily as it used to, then it’s probably time to replace it. Keep reading to learn how.

Step 1 - Buy a New Radiator Air Vent

Radiator air vents are readily available at any hardware store at a low cost. Take note of the model and make of your radiator when you go shopping to make sure you get the right size (size 5 is average for most models).

Step 2 - Close the Radiator

Use a wrench to shut off the incoming steam valve on your radiator to reduce the risk of burns.

Step 3 - Remove the Old Vent

Wrap a hand towel around the old radiator air vent, turn it counter-clockwise firmly, but steadily, and unscrew it out of place. If it’s stuck on too tight, try using pliers or a wrench.

Step 4 - Tape the Vent

Wrap a strip of Teflon tape around the threads of the new vent to prevent leaking.

Step 5 - Install the Vent

Screw the new air vent into place as firmly as you can by hand.