A healthy Lennox system generally needs to see a reading above 1

for oil removal

The Wayne 12988-002 Nozzle Adapter is a critical industrial-grade component engineered specifically for high-efficiency oil burner applications

the combustion airflow must be analyzed using a combustion analyzer

Rheem-Ruud AS-60993-85 Burner Retrofit Kit Els PW 17895 A healthy Lennox system generallyEnsure peak combustion performance and system safety with the Rheem Ruud AS 60993 85 Burner Retrofit Kit. Engineering for specific furnace burner replacement applications, this genuine OEM furnace part is designed to address combustion inefficiencies and environmental compliance in select Rheem and Ruud gas fired units. This comprehensive kit includes high grade components such as a manual reset limit switch, snap in bushings, burner supports, and