you know that a clean installation is just as important as the system's performance

Ensure all old gasket material is removed from the head chamber and bellows base to prevent uneven compression and potential leaks

Each kit includes a high-tolerance tapered regulator spring

What is the difference between the K19AT-36 and the K19AT-36H

Nordyne 626612 Limit Switch you know that a cleanThe Nordyne 626612 Limit Switch is a high precision, automatic reset safety control engineered for furnace overheat protection. As a critical HVAC high limit sensor, the 626612 is calibrated to open at 165F and reset once the heat exchanger temperature drops to 135F. Professional technicians recognize this as the official replacement for legacy part numbers 626561R, 626561, and 626612R. This genuine OEM furnace limit switch is standard in Nordyne,