Lennox 57W94 Furnace Orifice 0.88 Inches White

Product Description

The LENNOX 57W94 is a white furnace orifice measuring 0.88 inches, designed to meter gas flow into the burner assembly of a residential or light commercial gas furnace. The orifice controls the volume of gas passing through the burner port, directly affecting combustion efficiency and flame characteristics. Proper orifice sizing is critical to safe burner operation and must match the fuel type and BTU rating of the furnace. This part is a direct OEM-style replacement intended for installation by a licensed HVAC technician or gas appliance service professional.

This orifice is used in gas furnace applications where the original orifice has worn, corroded, or been damaged, or where a fuel conversion requires a change in orifice size. It is suited for installation in forced-air gas furnace burner assemblies. The white color coding assists technicians in identifying the correct orifice size during service calls, reducing the risk of misidentification when multiple orifice sizes are on hand.

Key Features

• 0.88-inch orifice diameter for precise gas flow metering
• White color coding aids fast, accurate identification during service
• OEM-style replacement for gas furnace burner assemblies
• Lightweight at 0.1 pounds for easy handling and installation

Compatibility

Designed as an OEM-style replacement orifice for LENNOX gas furnace burner assemblies. Verify orifice size, fuel type, and burner configuration against the furnace nameplate and service documentation before installation.

Installation Notes

Installation must be performed by a licensed HVAC technician or qualified gas appliance service professional in accordance with local codes and the IFGC. Shut off the gas supply and allow the furnace to cool completely before removing or installing any burner components. Use the appropriate orifice wrench or spud wrench to avoid cross-threading or damaging the burner manifold. Confirm the orifice size matches the fuel type and furnace model requirements before returning the system to service.

Technical Specifications

• Type: Orifice
• Used On: Furnace
• Orifice Size: 0.88 inches
• Color: White
• Weight: 0.1 pounds

Standard Information

• Brand: LENNOX
• Manufacturer Part Number: 57W94