Blog - Top Tips for Bleeding your Radiators

7 Top Tips for Bleeding Your Radiators

David Lambert

June 17, 2025

Keeping your radiators in top working condition is essential for maintaining a warm and comfortable home, especially during our chilly winters. One common maintenance task is bleeding your radiators to ensure they are heating efficiently. Here are some top tips for homeowners in Bedford and the surrounding areas on how to bleed your radiators effectively.

1. Understand the Signs: If your radiators are taking a long time to heat up or have cold spots, particularly at the top, it’s likely they need bleeding. This process releases trapped air that prevents hot water from circulating properly.

2. Turn Off the Heating: Before you start, make sure your heating system is turned off and the radiators have cooled down. This prevents hot water from potentially burning you during the process.

3. Gather Your Tools: You’ll need a radiator key (available at most hardware stores), a cloth, and a container to catch any drips of water. Having everything ready will make the process quicker and cleaner.

4. Find the Bleed Valve: Locate the bleed valve, which is usually at the top of the radiator. Insert the radiator key and turn it counterclockwise. You’ll hear a hissing sound as the trapped air escapes.

5. Catch the Drips: Hold the cloth and container under the valve to catch any escaping water. Once the hissing stops and water starts to flow steadily, close the valve by turning the key clockwise.

6. Check the Pressure: After bleeding your radiators, check the boiler pressure. If it’s too low, you may need to top it up. This ensures your heating system runs efficiently.

7. Regular Maintenance: Regularly bleeding your radiators, especially before winter sets in, ensures your home stays warm, and your heating system works efficiently.

If you’re unsure about bleeding your radiators or need professional assistance, contact us today to request a quote for our expert plumbing services in Bedfordshire. Keep your home warm and energy-efficient with Pronto Plumber.