OEM Goodman 150°F Primary Limit Switch for AMH81205DXAA — 20162903

Goodman 20162903 Primary Limit Switch (150°F)

The Goodman 20162903 is a genuine OEM primary high-limit switch rated at 150°F, built as a direct-fit safety control for the AMH81205DXAA gas furnace. Mounted on the heat exchanger or blower deck, it continuously monitors supply-air temperature and opens the control circuit if the furnace exceeds its safe limit — typically caused by restricted airflow, a dirty filter, or a failed blower. This is the furnace's primary over-temperature defense, protecting the heat exchanger from cracking and preventing dangerous overheating.

Specifications

• Trip point: 150°F high-limit
• Type: Auto-reset primary limit switch
• Fit: OEM direct replacement for Goodman AMH81205DXAA furnace
• Function: Opens control circuit on over-temperature
• Brand: Genuine Goodman / Amana OEM

OEM vs. Generic

The genuine Goodman 20162903 is calibrated to the exact 150°F trip point and mounting pattern this furnace requires, so it protects the heat exchanger at the temperature the engineers intended. Generic limits with a nearby setpoint may trip too early (causing short-cycling on heat) or too late (reducing protection). For a safety control tied to the heat exchanger, matching the OEM setpoint matters.

Installation Difficulty

Easy (1 of 3). This is typically a 15-minute repair: disconnect power, unplug the two spade terminals, remove two mounting screws, and install the new switch in the same orientation. If the limit keeps tripping after replacement, address the root cause — usually a clogged filter, closed registers, or a weak blower — before relying on the furnace again.