IMAGE COMING SOON
OEM Guaranteed
Same-Day Ship
30-Day Returns
Secure Checkout
The Goodman 0130F00038 Auxiliary Limit Switch (light blue) is a genuine OEM secondary safety control for the Goodman GDH80403AXAA gas furnace. Mounted near the blower or burner box, this auxiliary limit provides backup overheat protection — opening the circuit to shut down the furnace if temperatures exceed safe limits due to restricted airflow, a dirty filter, or blower failure. It is an inexpensive but essential safety component.
Because this is a low-cost safety switch, using the genuine OEM Goodman part is a no-brainer — it guarantees the correct trip temperature and terminal fit. Generic substitutes rarely save enough to justify the risk of an incorrect calibration on a life-safety device.
Easy — Remove the access panel, disconnect the two wire terminals, unclip or unscrew the switch, and reverse to install. Always de-energize power and shut off the gas first. Verify with a continuity test. Typical replacement takes 10–15 minutes for a comfortable DIYer.