How to Bleed Your Hot Water Radiator

Ah, the hot water radiator. It’s a classic heating solution that has kept countless New Yorkers warm during those chilly winter months. But every so often, you might notice that your radiator isn’t heating up as it should. It might feel cold at the top, or it might make a gurgling sound. These are signs that there’s trapped air inside, and it’s time for a little maintenance: bleeding the radiator. Don’t worry; it’s not as gruesome as it sounds. Let’s walk through the steps.

1. Gather Your Tools:

You’ll need a radiator key (available at most hardware stores) or a flat-head screwdriver.
A cloth or small bowl to catch any dripping water.

2. Turn Off the Heating:

Before you start, ensure that your heating system is off and let the radiator cool down. It’s safer and less messy to bleed a cold radiator.

3. Locate the Bleed Valve:

This is usually found at the top of the radiator, on one side or the other. It’s where you’ll attach the radiator key or insert the screwdriver.

4. Bleed the Radiator:

Place the cloth or bowl under the bleed valve to catch any water.
Insert the radiator key into the valve and turn it counterclockwise (or use the screwdriver if there’s a slot). You should hear a hissing sound as the air escapes.
Once water starts to drip or spurt out, this means all the air has been released. Tighten the valve back up by turning it clockwise.

5. Check the Pressure:

After bleeding all the radiators in your home, check the pressure gauge on your boiler. If the pressure is too low, you might need to top it up. Refer to your boiler’s manual or consult a professional if you’re unsure about this step.

6. Turn the Heating Back On:

Once you’ve bled all the radiators and checked the boiler pressure, turn the heating system back on. Your radiators should now heat up evenly without any cold spots or gurgling sounds.

7. Regular Maintenance:

It’s a good idea to bleed your radiators at least once a year, preferably before the heating season starts. This will ensure they run efficiently and keep your home cozy all winter long.

Bleeding your hot water radiator is a simple yet essential maintenance task that can make a significant difference in the comfort of your home. By ensuring that air is regularly released from the system, you’ll enjoy consistent warmth and potentially save on heating bills. And remember, if you ever feel unsure about any step in the process, it’s always best to consult with an emergency plumber. After all, staying warm in the winter is a team effort!