Whether you are troubleshooting a VAV control loop or upgrading a legacy Barber Colman network

it maintains HVAC actuator compatibility across a wide ambient temperature range from -40°F to 150°F

Ensures reliable HVAC electrical connectivity between control boards and system peripherals

Whether you are servicing a residential CGa series or a commercial-grade unit

Key Benefits: Precise Thermal Cut-Out: Calibrated to open at exactly 195 degrees Fahrenheit to prevent heat exchanger damage

Lennox 43H88 Relay Whether you are troubleshooting aThe Lennox 43H88 Blower Relay is a heavy duty 3PDT (Three Pole Double Throw) electromagnetic switch engineered for precise load management in commercial and residential HVAC systems. Operating on a 24V coil voltage, this inductive rated relay is a direct replacement for the legacy Lennox 43H8801, ensuring a 1: 1 fit for technicians servicing Lennox packaged units and heat pumps. With a 15 Amp contact rating, the 43H88 provides the switching capacity