Lennox part number 16M21 is an OEM two-stage scroll compressor manufactured by LG. Designed for high-efficiency residential air conditioning and heat pump systems, this compressor delivers reliable staged capacity, improved comfort control, and strong energy performance when paired with compatible Lennox equipment. Genuine Lennox OEM components ensure proper fit, performance, and long-term system reliability.

Product Overview
The Lennox 16M21 (LG APM020KA) two-stage scroll compressor provides dual-capacity operation for enhanced comfort and efficiency. Operating at approximately 25,000 BTUH in high stage and 19,600 BTUH in low stage, it allows HVAC systems to better match cooling demand, reduce cycling, and improve humidity control. Designed for R-410A refrigerant, this compressor features smooth scroll operation, reduced vibration, and dependable performance in residential applications.

This compressor is intended as a direct OEM replacement and should be installed by a qualified HVAC professional to ensure proper operation and warranty compliance.

 

Specifications:

Manufacturer: LG
Lennox part number: 16M21
LG model number: APM020KA
Compressor type: Two-stage scroll
Cooling capacity (high stage): 25,000 BTUH
Cooling capacity (low stage): 19,600 BTUH
Refrigerant: R-410A
Efficiency: 15.1 EER (high stage), 19.4 EER (low stage)
Voltage: 208–230 VAC
Phase: 1 phase
Frequency: 60 Hz
Application: Residential air conditioning and heat pump systems
OEM replacement: Yes