Lennox Air Conditioners & Heat Pumps

Exacting precision makes Lennox® air conditioners among the quietest and most energy-efficient units you can buy.

Enjoy innovation in every season with precise, quietly efficient Lennox® heat pumps that keep your life simply perfect.

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EL21KLV Heat Pump

High-efficiency, digital-ready, variable-capacity cold climate heat pump

Class-leading heat pump technology

Our advanced cold climate technology delivers a greater amount of heat compared to traditional heat pumps, resulting in a feeling similar to the rich, warm comfort of a gas furnace—even during the coldest outdoor temperatures.


A peacefully quiet environment

To reduce operating sound levels, the EL21KLV uses a sound-dampening system with a precision-balanced, proprietary direct-drive fan to ensure smooth, quiet operation. This lets it operate at a volume as quiet as 55 dB, or the sound of a microwave.


Your Digital Bridge into a World of Perfect Air

The compact, efficient EL21KLV variable-speed heat pump is your digital bridge into a world of perfect air. When paired with a fully digital furnace or air handler and a Lennox S40 Smart Thermostat, it can step into a fully communicating home comfort system, maximizing its 21.00 SEER2 efficiency with modern communication features.