Lennox SL28XCV
Signature Series AC
Variable-capacity cooling up to 28 SEER2. The most efficient and quietest central air conditioner Lennox makes — installed right in Chicago.
IL License #2183457 · D's Air & Heating, Inc. · Chicago, IL
Model Specifications
Key Features
- Variable-capacity compressor — adjusts cooling output in precise increments
- Up to 28 SEER2 — highest efficiency in the Lennox AC lineup
- As low as 59 dB — one of the quietest central ACs available
- Compatible with Lennox S40 Smart Thermostat for full communicating control
- Precise humidity control — removes more moisture than single-stage units
About the Lennox SL28XCV
The Lennox SL28XCV is the flagship Signature Series central air conditioner, delivering variable-capacity cooling at up to 28 SEER2 efficiency. The variable-capacity compressor adjusts output in precise increments — running at exactly the level needed to maintain comfort rather than cycling on and off at full blast.
This approach dramatically reduces energy consumption, eliminates temperature swings, and provides superior humidity control compared to single-stage or two-stage units. At as low as 59 dB, the SL28XCV is one of the quietest central ACs on the market.
When paired with the Lennox S40 Smart Thermostat, the SL28XCV unlocks full communicating capabilities including self-diagnostics and adaptive cooling algorithms. D's Air & Heating, Inc. installs the SL28XCV with full permit pulling, load calculation, and Lennox warranty registration.
Recommended Add-Ons
S40 Smart Thermostat
Full communicating control — unlocks all SL28XCV capabilities.
PureAir™ S Filtration
Advanced whole-home air purification.
Whole-Home Dehumidifier
Pairs with variable-capacity cooling for precise humidity control.
Surge Protector
Protects the compressor and control board.
What Chicago Homeowners Say
Whisper Quiet
I can't hear it running. The house stays perfectly cool and the humidity is gone. Best AC we've ever had.
Nicole P. — Lincoln Park
Incredible Savings
Electric bill dropped noticeably. Variable-capacity is the real deal — it just runs at the right level all day.
Marcus T. — Lakeview
Perfect Install
Darryl sized it right, pulled the permit, registered the warranty. Everything done professionally.
Diane R. — Logan Square
D's Air Service Call Policy
Ready for the Best AC Lennox Makes?
D's Air & Heating, Inc. · (773) 940-0965 · [email protected] · IL License #2183457