Description
Lennox 54M90 LP Orifice Overview
The Lennox 54M90 is an OEM replacement LP (liquid propane) orifice designed to maintain precise fuel metering in compatible Lennox heating equipment. Proper orifice sizing is critical to safe and efficient combustion — a correctly matched orifice ensures the right fuel-to-air ratio, consistent burner performance, and protection against incomplete combustion or flame instability.
Key Features
- OEM Lennox replacement part — engineered to exact factory specifications
- Designed for liquid propane (LP) gas applications
- Ensures precise fuel flow for optimal combustion efficiency
- Helps maintain proper flame characteristics and burner stability
- Direct replacement for compatible Lennox furnace and heating systems
- Durable construction for long-lasting, reliable service
Application
The 54M90 LP orifice is intended for use in Lennox furnaces and heating appliances that require an LP gas orifice. Always verify compatibility with your specific Lennox model before installation. For natural gas applications, consult the appropriate Lennox orifice part number.
Why Choose an OEM Lennox Orifice?
Using a genuine Lennox replacement orifice guarantees a precise fit and correct orifice diameter calibrated for LP gas pressure and flow requirements. This protects equipment warranties, supports safe operation, and helps maintain peak system efficiency.
Installation Note
Orifice replacement should be performed by a qualified HVAC technician in accordance with local codes and the equipment manufacturer’s instructions. Always shut off gas supply before servicing burner components.
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