The Lennox 73W77 condenser fan orifice, part number 100002-03, is a genuine OEM airflow component designed to properly channel air through the condenser fan opening in Lennox outdoor HVAC units. This orifice plays a critical role in maintaining correct airflow patterns across the condenser coil, helping the system reject heat efficiently and operate within manufacturer specifications. By reducing air recirculation and turbulence, it supports stable system performance, improved cooling efficiency, and long-term equipment reliability.

Manufactured to precise Lennox standards, this condenser fan orifice is engineered for a direct fit and seamless integration with compatible Lennox air conditioners and heat pumps. Using an OEM fan orifice ensures proper fan clearance, balanced airflow, and dependable operation, making it the correct replacement choice during service, repair, or restoration of the condenser section.

 

Specification:

Manufacturer: Lennox
OEM part number: 73W77
Alternate part number: 100002-03
Product type: Condenser fan orifice
Inner diameter (ID): 26.68 inches
Height: 7.24 inches
Application: Outdoor condenser units
Function: Directs and regulates condenser airflow
Installation: Direct OEM replacement
Condition: New, genuine OEM part