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The Goodman B1370145 is a genuine OEM 300°F rollout limit switch for the GDS80453AXA gas furnace and compatible Goodman and Amana models. This manual-reset safety control mounts on the burner assembly and opens the ignition circuit if flame rolls out of the burner box — protecting the furnace and home from a blocked heat exchanger, restricted venting, or a failed inducer. A tripped or failed rollout switch will shut the furnace down on a safety lockout, so a correct-temperature OEM replacement is essential.
The OEM B1370145 is calibrated to the exact 300°F trip point and mounting footprint the GDS80453AXA requires. Substituting a switch with the wrong temperature rating defeats a life-safety device and can allow unsafe operation. Never approximate on a flame-rollout control — install the OEM part.
Easy. About 10–15 minutes with a nut driver. Turn off power and gas, disconnect the two spade terminals, remove the mounting screws, and install the new switch in the same orientation. Important: a repeated rollout trip signals an underlying problem (blocked flue, dirty burners, weak inducer) — have a licensed HVAC technician diagnose the root cause before returning the furnace to service.