The Lennox 97M59 / 100503-02 Discharge Thermostat is a reliable control component designed for HVAC systems to protect compressor and system performance by monitoring discharge coil temperature. Engineered to open at 225 degrees Fahrenheit and close at 180 degrees Fahrenheit, this thermostat helps prevent overheating and ensures stable operation. Manufactured to strict Lennox quality standards, it is an exact fit replacement for select Lennox units requiring a discharge thermostat with these specifications. Ideal for HVAC contractors and homeowners performing maintenance or repairs, this thermostat supports consistent performance, longevity, and system safety.

 

Key Features:

• Designed to open at 225 degrees Fahrenheit and close at 180 degrees Fahrenheit
• Compatible replacement for Lennox systems specified for 97M59 / 100503-02
• Protects system components by monitoring discharge coil temperature
• Durable construction for long service life
• Easy to install on compatible units

 

Technical Specifications:

Application: discharge coil temperature control
Open Temperature: 225°F (107°C)
Close Temperature: 180°F (82°C)
Style: Coil thermostat
Part Numbers: Lennox 97M59, 100503-02
Type: Discharge thermostat switch for HVAC systems

 

Uses and Benefits:

The discharge thermostat controls temperature thresholds to safeguard compressor operation. By opening the circuit at 225°F and resetting at 180°F, it prevents excessive heat buildup that can damage system components. This thermostat is commonly used in residential and commercial HVAC systems where accurate temperature monitoring and protection are essential. Installing a correctly rated discharge thermostat improves system reliability and reduces the risk of costly failures.