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The OEM Lennox 16M43 is a genuine factory replacement compressor for Lennox HVAC systems. The compressor is the central component of the refrigeration circuit, pressurizing and circulating refrigerant to transfer heat and deliver the cooling capacity your system was designed to provide. This authentic part is built to Lennox specifications to ensure a proper, reliable fit.
Common failure symptoms: the system operates but stops cooling, loud or unusual noises during operation, breakers tripping or fuses blowing on startup, short-cycling, hard starting, and abnormally high amp draw. A compressor that hums without starting or that has tripped on internal overload generally needs to be replaced.
Why OEM matters: Lennox equipment is engineered around specific compressor characteristics, including displacement, oil charge, and electrical protection. Installing the genuine 16M43 ensures compatibility with Lennox controls, correct refrigerant flow, and rated efficiency — delivering the durability and performance that aftermarket alternatives cannot reliably match. Always confirm model, voltage, and refrigerant compatibility with your unit before installation.