sl22klv
Heat Pump
The most precise and efficient heat pump available, featuring Lennox' most advanced cold climate technology.*
ENERGY STAR® Qualified
R-454B
All Dave Lennox Signature® Collection models come with a 10-Year Limited Warranty on compressor and covered components. For more information, visit www.Lennox.com/WarrantyYourWay.
Features
The most precise and efficient heat pump available, featuring Lennox' most advanced cold climate technology.*
The Dave Lennox Signature® Collection SL22KLV is a heat pump like no other. Utilizing Lennox' most advanced cold climate heat pump technology, it optimizes efficiency while delivering rich, warm comfort in temperatures as low as -20°F. From its innovative cabinet design that increases durability, to its digital communication features that maximize accurate control, no other heat pump delivers this level of efficiency and precision.*
Leading heat pump technology for the coldest conditions
Our leading heat pump is engineered with Lennox' most advanced cold climate technology, using a variable-speed compressor with Electronic Refrigerant Injection (ERI) to adjust the energy usage based on the outside temperature. In colder temperatures, the ERI increases heating output efficiently, providing the warm, rich comfort of a gas furnace with the efficiency of a heat pump.
The perfect amount of quiet
To reduce operating sound levels, the SL22KLV uses a sound-dampening system with a precision-balanced, direct-drive fan to ensure smooth, quiet operation. This lets it operate at a volume as quiet as 58 dB, or the sound of a microwave.
LOWER OPERATING COSTS
• The separated combustion technology enhances overall energy efficiency of the building by eliminating the continued replacement of conditioned air with unconditioned outside air.
• Up to 5% more efficient than standard efficiency direct-fired unit heaters**
• LS25-250 through LS25-400 kBtuh models lower operating costs by efficiently meeting the demands of the space with two stages of heating.
APPLICATIONS FOR SEPARATED COMBUSTION
Separated combustion LS25 models use outside air for combustion and are designed for use in applications where the indoor environment may contain airborne contaminants, VOC’s and/or dust that would normally be harmful to the combustion process and components.
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
SL22KLV Cold Climate Heat Pump
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Products that add to the performance of SL22KLV Cold Climate Heat Pump
- * Efficiency claim based on comparison of the combined heating and cooling efficiency within a single product family (HSPF2, EER2, and SEER2 of the SL22KLV) as compared to the HSPF2, EER2, and SEER2 of competitive R-454B and R-32 ducted heat pump as published in AHRI (January 2025). Actual system efficiency may vary based on the system match and other factors; consult AHRI Directory for exact system efficiency. Precision claim based on the average cooling capacity range of the SL22KLV as compared to the average cooling capacity range of the competitive variable capacity compressor units based on published competitive data (January 2025). Cooling capacity ranges calculated across 2, 3, 4 and 5 tonnage at maximum and minimum speed at ARI standard rating conditions: 95°F outdoor and 80°/67° indoor (80°F dry bulb and 67°F wet bulb).
