The Lennox 13R81 is an OEM high pressure switch kit engineered to protect your Lennox HVAC system from potentially damaging high-pressure refrigerant conditions. Designed as a direct factory replacement, this kit ensures your system operates safely within its designed pressure parameters — shutting down the compressor before overpressure events can cause costly damage.
Key Features
- OEM Lennox replacement high pressure switch kit
- Protects the refrigeration circuit from dangerous high-pressure conditions
- Direct factory replacement for compatible Lennox systems
- Helps prevent compressor and system damage due to refrigerant overpressure
- Supports reliable, long-term system operation
Why Choose an OEM Pressure Switch?
Using a genuine Lennox OEM high pressure switch kit ensures proper fit, calibrated cut-out and cut-in pressure settings, and reliable performance that aftermarket alternatives may not match. Maintaining correct high-side pressure protection is critical to compressor longevity and overall system efficiency.
Application
- Designed for use with compatible Lennox residential and light commercial HVAC equipment
- Ideal for service technicians performing preventive maintenance or pressure switch replacement
Ordering Information
- Brand: Lennox
- Part Number / SKU: 13R81
- Type: High Pressure Switch Kit








