Coleman OEM 8665-3591 Furnace High Limit Switch | Replacement Safety Limit Control
Product Description
Restore the safe operation of your Coleman gas furnace with the Coleman OEM 8665-3591 High Limit Switch. This genuine OEM replacement safety switch is designed to monitor furnace temperatures and protect the heating system from overheating by opening the electrical circuit if unsafe temperatures are reached.
The 8665-3591 is used in select older Coleman/Evcon gas furnaces and is designed as a direct OEM replacement for compatible units. Replacing a failed limit switch helps restore proper furnace safety operation while maintaining the manufacturer's original performance specifications.
Always verify your furnace model and existing part number before ordering, as several limit switches with different temperature ratings were used across Coleman furnace models.
Key Features
- Genuine Coleman OEM replacement limit switch
- Part Number: 8665-3591
- High-limit safety switch for furnace over-temperature protection
- Helps prevent furnace overheating
- Direct replacement for compatible Coleman/Evcon gas furnaces
- Restores proper furnace safety operation
- Durable OEM construction for reliable performance
- Designed for long service life
- Easy replacement using existing mounting hardware
- Verify furnace model and part number before purchase to ensure compatibility
One thing I could not verify is the temperature rating (such as L150, L180, etc.) for the 8665-3591. There are references showing it as an older OEM part, but I couldn't find a reliable source listing its exact open/close temperatures or a complete compatibility list. If you can provide a photo of the switch itself (front or back), I can usually identify the temperature rating and cross-reference it to the current Source 1 replacement part.