International Comfort Products 1184879 Hi Limit Switch

Product Description

The INTERNATIONAL COMFORT PRODUCTS 1184879 is a main hi limit switch designed to protect residential gas furnaces from overheating. When supply air temperatures exceed the rated threshold, the switch opens the control circuit and shuts down the burner, preventing heat exchanger damage and reducing fire risk. Rated at L205-20F, the switch opens at 205 degrees F and resets with a 20-degree F differential. At 0.11 pounds and compact dimensions of 5.55 inches by 3.5 inches by 1.3 inches, it installs directly into the furnace cabinet without modification. This is a genuine OEM replacement part, ensuring proper calibration and fit.

This hi limit switch is designed for use in residential gas furnaces. It is confirmed compatible with G96VTN, N92ESN, and N95ESN unit families, among others. The switch mounts in the furnace cabinet along the heat exchanger or plenum, where it monitors air temperature during heating cycles. Licensed HVAC technicians replace this component during no-heat calls, nuisance-trip diagnostics, or as part of a heat exchanger inspection. Consult the full model compatibility list for complete fitment details before ordering.

Key Features

• Genuine OEM replacement part for precise calibration and drop-in fit
• Opens at 205 degrees F with a 20-degree F reset differential (L205-20F rating)
• Protects heat exchanger and system components from damage caused by overheating
• Compact form factor: 5.55 inches x 3.5 inches x 1.3 inches for straightforward cabinet installation
• Lightweight at 0.11 pounds, minimizing stress on mounting hardware

Compatibility

Confirmed compatible with INTERNATIONAL COMFORT PRODUCTS G96VTN, N92ESN, and N95ESN furnace units. Additional compatible models may apply — refer to the manufacturer compatibility list for the complete fitment reference.

Installation Notes

Hi limit switch replacement is a task for a licensed HVAC technician. Before servicing, shut off power to the furnace at the disconnect switch and set the thermostat to the off position. The switch is typically mounted to the heat exchanger housing or plenum panel using manufacturer-specified fasteners — do not overtighten mounting hardware on the switch body. After installation, verify the control circuit resets properly and monitor the furnace through a full heating cycle to confirm normal limit switch operation.

Technical Specifications

• Temperature Rating: L205-20F (opens at 205 degrees F, 20 degrees F reset differential)
• Length: 5.55 inches
• Width: 3.5 inches
• Height: 1.3 inches
• Weight: 0.11 pounds

Standard Information

• Brand: INTERNATIONAL COMFORT PRODUCTS
• Manufacturer Part Number: 1184879