OEM Goodman 160°F 7 in. Fan/Limit Switch for GMP075-3 — 1370908S

The Goodman 1370908S Limit Switch is the primary high-limit control for GMP075-3 gas furnaces, with a 160°F set point and a 7-inch probe insertion depth. It monitors heat-exchanger temperature: it signals the blower and, if the plenum overheats from restricted airflow, it opens to cut the gas valve and prevent heat-exchanger damage. A failed limit switch shows up as short-cycling on limit, or a furnace that heats but never shuts the burners off correctly.

Specifications

• Trip temperature: 160°F (opens on temperature rise)
• Insertion depth: 7 in. probe/element length
• Type: Automatic-reset fan & limit control
• Terminals: 1/4 in. quick-connect spades
• Fits: Goodman/Amana GMP075-3 and compatible GMP furnaces
• OEM Part Number: 1370908S

OEM vs. Generic

Both the 160°F set point and the 7-inch length must match your furnace — a shorter probe reads air temperature incorrectly and trips at the wrong time. This genuine Goodman OEM switch is factory-calibrated to spec, unlike adjustable universal limits that require field setup and can drift.

Installation Difficulty: Easy

About 20 minutes. Disconnect power, note the wire positions, remove the two mounting screws on the heat-exchanger panel, and withdraw the probe. Insert the new switch to the same depth, refasten, and reconnect the spades. Verify a full heat cycle with the blower staging on and off normally.

Genuine Goodman part shipped fast from National HVAC Parts.