York S1-125396 TXV Valve 320788-704 the Lennox 19M54 features a

the Lennox 19M54 features a diagnostic LED to streamline troubleshooting on the job site

Combustion Safety: Restores a sealed combustion path

This air pressure sensing switch helps maintain safe airflow thresholds

Its constant cut-in design prevents short-cycling by ensuring the evaporator is fully defrosted before the system re-engages

York S1-125396 TXV Valve 320788-704 the Lennox 19M54 features aThe York S1 125396 TXV Valve (Model OZE 20 GA) is a high capacity 20 ton thermostatic expansion valve engineered for precision refrigerant metering in large scale residential and light commercial R 410A systems. Designed as a critical field replacement part, this York OEM expansion valve features 7 8" x 1 1 8" ODF sweat connections, ensuring a secure, leak proof interface with the evaporator coil and liquid line. Its balanced port design provides