Description
The Carrier HH18HV120 is an OEM auto reset limit switch designed to protect furnaces and air handlers from overheating by monitoring supply-air or heat exchanger temperatures. When temperatures exceed the set threshold, the switch opens the control circuit to shut down the heating system — then automatically resets once temperatures return to a safe level, minimizing downtime and service calls.
Key Features
- Auto reset operation — automatically restores normal function once temperature drops to a safe level
- Temperature range: 90°F to 120°F operating range
- OEM Carrier replacement part — ensures proper fit and reliable performance
- Protects heat exchangers and system components from thermal damage
- Designed for use in Carrier furnaces and HVAC air-handling equipment
- Simple drop-in replacement for fast, straightforward installation
Applications
- Carrier residential and light commercial furnaces
- Air handlers requiring high-limit temperature protection
- HVAC systems requiring OEM-spec auto-reset thermal protection
Product Specifications
- Brand: Carrier
- Part Number: HH18HV120
- Switch Type: Auto Reset Limit Switch
- Temperature Range: 90°F – 120°F
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