MC RV Furnace Air Flow Sail Switch for Atwood Dometic

The MC RV furnace air flow sail switch (also called a furnace sail switch, airflow switch or low air flow switch) is a replacement part for select Atwood and Dometic RV furnaces. The sail switch is a safety feature. It detects air flow and confirms the blower motor is working before the furnace ignites and starts heating the air.

Key Features:

• Safety function: Confirms proper air flow before ignition so the furnace does not fire without adequate air movement.
• Replacement design: Made as a replacement sail switch for select Atwood and Dometic furnaces.
• Troubleshooting aid: If the switch fails to open, it is likely faulty and needs to be replaced. Common problems with these switches are bent paddles, loose wire connections, or an obstruction between the paddle and switch contact.
• Multiple versions: The MC line includes switch versions for different furnace series and for different furnace serial number ranges. Choose the version that matches your furnace.

Replacing a worn or failed sail switch can help restore reliable furnace startup and consistent cabin heating. Compare the switch style and your furnace model and serial number to the listing details for the specific part number you choose.