Primary High Limit Switch Replacement for Furnaces With Metal Housing, 150 Degree and 110 Degree, Heavy Duty and Heat Resistant, Replaces L40-524, Part 20162904, Built Tough for Your Home Heating System
✔️ Direct-fit replacement for compatible furnaces; includes 1 x switch
This high limit switch is a heavy-duty safety component used in residential furnaces. It monitors furnace temperature and automatically cuts power when the limit is exceeded, protecting the heat exchanger and wiring. This part is designed as a direct replacement for compatible units and installs with standard mounting holes and wiring terminals.
✅ Part number 20162904✅ Heavy-duty heat-resistant metal alloy and reinforced polymer housing
✅ Automatic shutdown at high temps with dual-action bimetal protection
✅ Direct-fit replacement with pre-drilled mounting holes and standard wiring terminals
💡 What is a high limit switch used for in home heating systems? It’s a handy safety device that protects equipment by shutting off power when temperatures get too high.
- It guards the heat exchanger from overheating and prevents damage
- It triggers automatic cut-off during thermal cycling to keep the furnace safe
- It is a direct-fit replacement designed for quick, tool-friendly installation
- It helps reduce emergency service calls by maintaining safe operating temps