OEM Lennox Oil Burner — 45M39

The genuine OEM Lennox 45M39 oil burner powers combustion in your Lennox oil-fired furnace, atomizing fuel oil and igniting it into the steady, efficient flame that supplies heat throughout your home. Manufactured to Lennox factory specifications, it provides reliable startup, correct air-to-fuel mixing, and the combustion efficiency your system was engineered around.

A deteriorating oil burner typically announces itself through hard starts, repeated safety lockouts, smoky or sooty flue exhaust, a noisy or unstable flame, lingering oil odors, and climbing heating costs. Left unaddressed, a failing burner can cause short-cycling, incomplete combustion, and an inability to hold the thermostat setpoint during cold weather.

OEM quality is essential for Lennox systems. The 45M39 matches the exact mounting, electrical, and flame characteristics Lennox validated for your furnace, guaranteeing a proper fit and safe integration with the factory primary control and cad cell. Off-brand replacements risk mistuned combustion, nuisance lockouts, and warranty complications. Fit the burner Lennox specified for clean, efficient, worry-free heating.