Chicago's Authorized Lennox dealer Since 2010 | D's Air & Heating
D's Air & Heating is an Authorized Lennox dealer serving Chicago since 2010, providing expert Lennox installation, repair, maintenance, and replacement services throughout Chicago and the surrounding communities.
Lennox SL25KCV Installation Chicago
The pinnacle of Lennox residential cooling. SL25KCV variable-capacity air conditioner — up to 26 SEER2, iComfort communicating, whisper-quiet operation. Installed by D's Air & Heating, Inc., Chicago's Lennox Premier dealer.
The Dave Lennox Signature Collection SL25KCV
The Lennox SL25KCV is the flagship of the Dave Lennox Signature Collection — Lennox's highest-tier residential air conditioner lineup. With variable-capacity compressor technology, the SL25KCV modulates output in precise increments from as low as 35% up to 100% capacity, matching your home's exact cooling load at any given moment. The result is steadier temperatures, dramatically lower humidity, and energy consumption that tracks actual demand rather than cycling on and off at full blast.
Rated up to 26 SEER2, the SL25KCV is one of the most efficient split-system air conditioners available in the residential market. It is fully communicating with the Lennox iComfort S40 and M30 smart thermostats — meaning the thermostat, air handler, and condenser share real-time data to optimize performance automatically. Comfort levels that used to require manual adjustment happen on their own.
As a Lennox Premier dealer, D's Air & Heating, Inc. installs the SL25KCV with factory-authorized startup, full iComfort system commissioning, and direct Lennox warranty registration. Every installation begins with a Manual J load calculation — proper sizing is non-negotiable at this performance tier. We pull permits, handle city inspections, and leave you with a fully commissioned, warranty-registered system.
Lennox Premier dealer
Factory-authorized installation & iComfort commissioning
Variable-Capacity Technology
Up to 26 SEER2
Among the highest SEER2 ratings in residential split-system AC
35%–100% Modulation
Precise variable-capacity operation — no jarring on/off cycling
iComfort Communicating
Full system optimization with Lennox iComfort S40 or M30 thermostat
Lennox SL25KCV Models & Installed Pricing
SL25KCV — 2 Ton through 5 Ton · Up to 26 SEER2 · Variable-Capacity
*Installed prices include equipment, labor, standard refrigerant charge, iComfort commissioning, and startup. Local taxes may apply. Financing available.
Best For
- Maximum efficiency — smallest Chicago homes
- iComfort smart thermostat integration
- Whisper-quiet variable-capacity operation
Equipment Price
$6,200
Sale Price Installed
$16,800
*Local taxes may apply. Financing available.
Book OnlineBest For
- Maximum efficiency — Chicago bungalows
- iComfort smart thermostat integration
- Whisper-quiet variable-capacity operation
Equipment Price
$6,800
Sale Price Installed
$18,200
*Local taxes may apply. Financing available.
Book OnlineBest For
- Maximum efficiency — Chicago two-flats
- iComfort smart thermostat integration
- Whisper-quiet variable-capacity operation
Equipment Price
$7,400
Sale Price Installed
$19,800
*Local taxes may apply. Financing available.
Book OnlineBest For
- Maximum efficiency — larger Chicago homes
- iComfort smart thermostat integration
- Whisper-quiet variable-capacity operation
Equipment Price
$8,600
Sale Price Installed
$22,500
*Local taxes may apply. Financing available.
Book OnlineBest For
- Maximum efficiency — large Chicago homes
- iComfort smart thermostat integration
- Whisper-quiet variable-capacity operation
Equipment Price
$9,800
Sale Price Installed
$25,500
*Local taxes may apply. Financing available.
Book OnlineHow the SL25KCV Compares
Dave Lennox Signature vs. Elite vs. Merit — side by side
| Feature | SL25KCVDave Lennox Signature | EL18KCVElite Series | EL17XC1Elite Series | ML14XC1Merit Series |
|---|---|---|---|---|
SEER2 Rating | Up to 26 | 18 | 17 | 14.3 |
Compressor | Variable-Capacity | Variable-Speed | Two-Stage Variable | Single-Stage |
iComfort Communicating | Full System | Compatible | Compatible | — |
Energy Savings | Maximum | Excellent | Very Good | Standard |
Humidity Control | Best-in-Class | Excellent | Very Good | Good |
Noise Level | Whisper-Quiet | Very Quiet | Quiet | Standard |
ENERGY STAR | Certified | Certified | Certified | — |
Parts Warranty | 10 Years | 10 Years | 10 Years | 10 Years |
Dave Lennox Signature
- Up to 26 SEER2
- Variable-Capacity
- Full iComfort System
- Best-in-Class Humidity
- Whisper-Quiet
- ENERGY STAR
- 10-Year Warranty
Elite Series
- 18 SEER2
- Variable-Speed
- iComfort Compatible
- Excellent Humidity
- Very Quiet
- ENERGY STAR
- 10-Year Warranty
Elite Series
- 17 SEER2
- Two-Stage Variable
- iComfort Compatible
- Very Good Humidity
- Quiet
- ENERGY STAR
- 10-Year Warranty
Merit Series
- 14.3 SEER2
- Single-Stage
- Basic Compatible
- Good Humidity
- Standard Noise
- No ENERGY STAR
- 10-Year Warranty
SL25KCV Key Features
Variable-Capacity Compressor
Modulates from 35% to 100% in precise increments — matching your home's exact cooling load rather than cycling on and off at full capacity. Steadier temperatures, lower humidity, and lower energy bills.
Up to 26 SEER2
Among the highest SEER2 ratings available in residential split-system air conditioning. Qualifies for maximum utility rebates and the federal IRA 30% tax credit.
iComfort Communicating System
Fully communicating with Lennox iComfort S40 and M30 smart thermostats. The condenser, air handler, and thermostat share real-time data to optimize performance automatically.
Whisper-Quiet Operation
Variable-capacity operation at low loads produces sound levels as low as 59 dB — quieter than a normal conversation. No jarring on/off cycling.
Superior Humidity Control
Extended low-capacity run cycles remove far more moisture from the air than single-stage or two-stage systems. Chicago summers are humid — the SL25KCV handles it.
10-Year Parts Warranty
Registered within 60 days of installation, the SL25KCV carries a 10-year parts warranty. D's Air registers your warranty directly with Lennox at installation.
Why D's Air & Heating, Inc. for SL25KCV Installation
Lennox Premier dealer
Factory-authorized installation, iComfort system commissioning, and direct Lennox warranty registration. Premier dealer pricing on the full Dave Lennox Signature Collection.
Manual J Load Calculation
Every SL25KCV installation begins with a proper load calculation. Right-sizing a variable-capacity system is critical — oversizing defeats the efficiency advantage.
iComfort Commissioning
We commission the full iComfort communicating system at installation — thermostat, air handler, and condenser — so you get the full performance benefit from day one.
Licensed & Permitted
IL License #2183457. All work is permitted, inspected, and backed by D's Air's installation guarantee. No shortcuts.
No Contracts Required
D's Air never requires service contracts. Your Lennox manufacturer warranty is registered directly — no middleman, no hidden fees.
Same-Day Estimates
Free in-home estimates available same day or next day. We measure, calculate, and quote on the spot.
Our Installation Process
Free In-Home Estimate
A D's Air technician visits your home, performs a Manual J load calculation, and recommends the correct SL25KCV tonnage for your space and budget.
Permit & Scheduling
We pull the required city permit and schedule your installation — typically within 3–5 business days of approval.
Professional Installation
Our licensed technicians install the SL25KCV condenser, matched Lennox air handler, and all electrical connections to manufacturer spec.
iComfort System Commissioning
We commission the full iComfort communicating system — thermostat, air handler, and condenser — verifying refrigerant charge, airflow, and system communication.
Warranty Registration
We register your Lennox 10-year parts warranty directly with the manufacturer at installation. No extra steps required from you.
Frequently Asked Questions
What makes the SL25KCV different from the EL18KCV?
The SL25KCV is the Dave Lennox Signature Collection flagship — it offers variable-capacity operation (35%–100% in precise increments) vs. the EL18KCV's variable-speed, and is rated up to 26 SEER2 vs. 18 SEER2. The SL25KCV is also fully communicating with the iComfort system, enabling automatic optimization across the entire HVAC system.
Does the SL25KCV require a specific thermostat?
To get the full variable-capacity benefit, the SL25KCV should be paired with a Lennox iComfort S40 or M30 communicating thermostat. A standard thermostat will work but will not enable full communicating system optimization.
What is the SL25KCV warranty?
The SL25KCV includes a 10-year parts warranty when registered within 60 days of installation. D's Air registers your warranty directly with Lennox at installation — no extra steps required.
Does the SL25KCV qualify for rebates or tax credits?
Yes. The SL25KCV is ENERGY STAR certified and qualifies for the federal Inflation Reduction Act 30% tax credit up to $600. It may also qualify for ComEd or Nicor utility rebates. Ask during your free estimate.
How long does an SL25KCV installation take?
Most SL25KCV replacements take 5–7 hours including full iComfort system commissioning. New installations requiring ductwork modifications may take longer.
Is financing available for the SL25KCV?
Yes. Qualified customers can finance their SL25KCV installation with $0 down. Ask about current rates when you schedule your free estimate.
Required for Full Performance
Pair with the Lennox iComfort S40
The SL25KCV is a fully communicating system — pairing it with the Lennox iComfort S40 unlocks automatic variable-capacity optimization, precise humidity control, and real-time energy reporting. Ask about add-on pricing during your free estimate.
Lennox — iComfort S40
Lennox iComfort S40 Smart Thermostat
- ✓7" full-color touch screen display
- ✓Full communicating system control with SL25KCV
- ✓Automatic variable-capacity optimization
- ✓Precise humidity control and reporting
- ✓iComfort app — control from anywhere
- ✓Energy usage reporting and scheduling
Get a Free SL25KCV Estimate
Dave Lennox Signature Collection. Premier dealer pricing. Licensed installation. No contracts.
Don't 'FREEZE' Call D's...Get a Free Installation Estimate
To provide accurate pricing and equipment recommendations, please complete the estimate request form below. Our team will review your information and contact you with options, pricing, and next steps.
Why Choose Lennox?
D's Air & Heating is an Authorized Lennox dealer — Serving Chicago Since 2010.
Lennox products are recognized for advanced technology, quiet operation, exceptional efficiency ratings, and dependable performance in Chicago's demanding climate. Lennox systems are engineered for long-term reliability, comfort, and energy savings.
Why Choose D's Air & Heating?
D's Air & Heating is an Authorized Lennox dealer — Serving Chicago Since 2010.
Since 2010, our company has helped Chicago homeowners and businesses install and service Lennox equipment. We provide expert sizing, installation, startup, testing, maintenance, and long-term support for every Lennox product we install.
Lennox SL25KCV Features
- Up to 26 SEER2 efficiency — Dave Lennox Signature® Collection
- Variable-capacity and two-stage compressor options
- Ultra-quiet operation for neighborhood comfort
- Smart thermostat compatibility
- Lennox 10-Year Parts Warranty when registered
- Lower utility costs all summer long
- Reliable Chicago summer performance
Professional Lennox Installation
Every installation includes equipment evaluation, proper system sizing, removal of existing equipment, professional installation, safety testing, airflow verification, and system commissioning to manufacturer standards. City of Chicago mechanical permits included on every installation.
Financing & Warranties
D's Air & Heating offers flexible financing options for qualified customers on all Lennox equipment installations. Ask about current Lennox rebates, manufacturer promotions, and seasonal offers available through our dealership.
- Lennox 10-Year Limited Parts Warranty — registered at installation
- Lennox 20-Year Heat Exchanger Warranty (select furnace models)
- 2-Year D's Air & Heating Workmanship Warranty
- Financing available for qualified customers — ask about current offers
- Current Lennox rebates and manufacturer promotions available
- No-contract service — no annual maintenance agreement required
Request Your Free Estimate
D's Air & Heating is an Authorized Lennox dealer — Serving Chicago Since 2010.
Contact D's Air & Heating today to schedule a free Lennox SL25KCV installation estimate and discover why Chicago homeowners continue to choose Lennox for dependable comfort and efficiency.
(773) 940-0965