technicians should replace these components at the start of every heating season

Why is my furnace blower running constantly while the burners are off

Key Benefits for Technicians: 303 Stainless Steel Construction: Provides maximum corrosion resistance against harsh refrigerants and industrial chemicals

Built with a 42Y Nema frame size

Lennox 24W49 Pressure Switch 318973-401 technicians should replace these componentsThe Lennox 24W49 Pressure Switch is a critical safety component designed for specific Lennox furnace models to monitor the induced draft blower operation. This OEM Lennox replacement part, identified by part number 101021 04, is factory calibrated with a set point of 0. 70" WC PF 1. 05" WC. It ensures the combustion process is vented correctly before allowing the gas valve to energize. Built with a durable diaphragm and precise electrical contacts,