Energy Efficient: Optimized 208/240V dual-voltage performance minimizes inrush current and holding wattage to reduce long-term operational costs

delivering 10 kilowatts of thermal output at 230 volts

As a direct HD54FK652 replacement

By utilizing a water seal to prevent live steam loss

Lennox 80K89 Limit Switch 320788-702 Energy Efficient: Optimized 208/240V dual-voltageThe Lennox 80K89 Limit Switch is a critical safety component designed for precise thermal regulation within residential gas furnaces. Engineered as a 150 180F AUTO Limit Switch, this L180 30F thermal cutout ensures the burner assembly shuts down if internal temperatures exceed the 180F threshold, preventing heat exchanger damage. Once the plenum cools by approximately 30F, the switch automatically resets, restoring normal furnace cycles. This Lennox