el21klv
Heat Pump
High-efficiency, digital-ready, variable-capacity cold climate heat pump compatible with 2025 Compliant Refrigerant
ENERGY STAR® Qualified
R-454B
All Elite models come with a 10-Year Limited Warranty on compressors and a 5-Year Limited Warranty on covered components. A 10-Year Extended Limited Warranty is available with product registration. For more information, visit www.Lennox.com/WarrantyYourWay.
Features
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.
Cabinets designed for reliability and serviceability
Our most innovative cabinet design features panels that fit securely to the unit to prevent excess noise, along with an easily removable louver panel that allows for quick access by your technician. This proprietary design makes Lennox units more attractive and durable, quieter and easier to install and service, so nothing stands between you and having perfect air in your home.
A refrigerant that’s better for the environment.
This product is compliant with 2025 EPA regulations for lower global warming potential (GWP) refrigerants. The Lennox choice of 2025 Compliant Refrigerant has a lower GWP than its predecessor and is formulated to provide excellent, reliable performance of your system for years to come.
Ratings & Reviews
See what other customers are saying about
EL21KLV Cold Climate Heat Pump
5/5
Quieter and more energy efficient than our old uni
March 25, 2026Our current older Lennox model started showing its age (12years) and decided to upgrade to more efficient model. Because our furnace wasn't digital communication compatible the dealer recommended the most efficient model that doesn't' require additional investment into new furnace. We love the quiet operation of this unit and the increased efficiency. This unit delivers constant heat down to 20F (its what we have set ours at but according to specs it can do lower temps). We stepped down from 3.5 tons to 3tons and with properly sized setup we are saving over $100/month in electricity vs old unit.
Yes, I recommend this product.
Ohio
Reason for Replacement: Emergency
5/5
4/5
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5/5
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