R-22 or R-410A) used in the system

20" PF rating ensures the furnace operates within the manufacturer's tight safety tolerances

Zero Minimum Differential: Reliable operation in gravity-fed or low-pressure systems with no minimum pressure requirement

while commonly used in natural gas boiler configurations

Compatibility is based on the specific coil and condenser match-up

Lennox 21703 Wheel 30067439-890 R-22 or R-410A) used inWhen you are dealing with a critical airflow issue in a high capacity system, the Lennox 21703 Blower Wheel is the direct OEM replacement fan wheel engineered to restore factory spec HVAC performance. This double inlet centrifugal wheel features a precise 12 5 8 inch diameter and 12 5 8 inch width, designed specifically for a 5 8 inch bore shaft. Constructed from heavy duty galvanized steel, this forward curved blower wheel is built to handle the