In this video, This Old House plumbing and heating expert Richard Trethewey silences squeaky, creaky pipes.
Steps to Fix a Knocking Baseboard Heater
- Remove the front cover and adjustable damper from the baseboard heater.
- Check for a plastic slider beneath the heating element at each metal carrier. If a slider has shifted out of position, center it on the carrier. If a slider is missing, replace it.
- If there's a return pipe running along the top of the metal carriers, be sure there's a spacer or insulator around the pipe at each carrier. If there are no spacers, install them to keep the pipe from resting directly on the carriers.
- To prevent the pipe from contacting wood framing inside a wall, place a split spacer onto the pipe and then push the spacer deep into the wall.