Reliable Switching: Utilizes high-grade 36TX11 thermal disc technology for thousands of reliable cycles in demanding heating environments

For technicians simplifying field repairs

Using this genuine McDonnell & Miller part ensures strict adherence to original equipment tolerances and preserves boiler system efficiency by preventing sludge buildup that can compromise float operation and heat transfer

If your motor has a 5/8-inch or 48-frame specific shaft

Using it on larger bodies will result in improper seating and inaccurate modulation

Carrier LH33WP003 Circuit Board Refrigerant Reliable Switching: Utilizes high-grade 36TX11For veteran technicians servicing Carrier rooftop units and furnaces, the Carrier LH33WP003 Integrated Circuit Board (IGC) serves as the central logic and timing hub for high performance gas heating. This genuine Direct Spark Ignition (DSI) control board is engineered to handle the complete sequence of operation, including pre purge timing, spark ignition, and gas valve management. Because the LH33WP003 is identical to LH33WP003A, it provides a