IMAGE COMING SOON
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
The Goodman 20162903 Primary Limit Switch is a genuine OEM high-limit safety control designed as a direct-fit replacement for AMVC800603BXAB furnaces and other compatible Goodman/Amana models. This normally-closed thermal switch opens at 150°F to shut down the burner circuit if the heat exchanger overheats, protecting your furnace from unsafe operating temperatures and preventing costly damage.
Our genuine OEM 20162903 switch trips at the exact factory-specified temperature and mounts without modification. Generic universal limits often carry approximate trip points and require re-drilling or bracket adaptation, which can compromise the safety timing your furnace's control board expects. For a mission-critical safety component, OEM is strongly recommended.
Easy — typically a 15-minute repair. Disconnect power, unplug the two spade terminals, remove the mounting screws, and swap in the new switch. No special tools required. If your furnace is short-cycling on limit or failing to fire, this is a common and inexpensive fix. Always confirm proper airflow and a clean filter, as a tripping limit can also indicate restricted airflow.