the ClimateMaster 33B0006N21 Expansion Valve is the critical OEM component required for precise refrigerant metering

meaning the switch will automatically reset once the temperature drops to 140°F

Key Benefits Exact OEM Compatibility: Specifically engineered for Lochinvar Knight KH series (KH055 through KH285) for seamless drop-in installation

Key Benefits for Technicians: Direct OEM Fit: Ensures correct shaft diameter

The Heil Quaker ICP 1193548 Control Board is a critical OEM furnace circuit board engineered for precise management of heating and cooling cycles in Heil

Siemens Building Technology QPA2062 Sensor 320074-702 the ClimateMaster 33B0006N21 Expansion ValveThe Siemens Building Technology QPA2062 Sensor is a multi parameter room air quality sensor engineered for high demand HVAC and building automation systems. Built for professional grade reliability, this unit integrates a Non Dispersive Infrared (NDIR) CO2 gas sensor with active temperature and relative humidity monitoring to facilitate precision Demand Controlled Ventilation (DCV). The 0 2000 ppm CO2 measuring range provides a stable 0 10V or 4 20mA