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 AC installation, repair, maintenance, and replacement services throughout Chicago and the surrounding communities.
Lennox AC Installation Chicago
Merit®, Elite®, and Dave Lennox Signature® air conditioners installed by Chicago's Authorized Lennox Premier Dealer since 2010. Permits pulled, warranty registered, Manual J included.
Why Lennox Cooling?
Lennox Air Conditioners Installed by D's Air & Heating
Lennox air conditioners are designed to deliver reliable cooling, quiet performance, and industry-leading energy efficiency for homeowners looking to improve comfort and reduce utility costs. Available in the Dave Lennox Signature®, Elite®, and Merit® Series collections, Lennox offers options ranging from economical single-stage systems to premium variable-capacity inverter-driven equipment capable of delivering precise indoor temperature control. Homeowners can choose from systems as efficient as 26 SEER2, helping reduce energy consumption while delivering consistent comfort throughout the cooling season. Many Lennox systems feature R-454B refrigerant, advanced communicating controls, variable-capacity compressors, and compatibility with the Lennox S40 Smart Thermostat for enhanced system management and performance. Whether you're replacing an aging air conditioner, upgrading to a high-efficiency cooling system, or installing a complete HVAC replacement package, D's Air & Heating provides professional Lennox air conditioner installation throughout Chicago and surrounding communities.
Lennox air conditioners are engineered for high-efficiency cooling, quiet performance, and long-lasting reliability — making them one of the best AC options for Chicago homes. At D's Air & Heating, we install, repair, and maintain the full Lennox AC lineup, including the Dave Lennox Signature® SL25KCV, Elite Series EL22KCV, and Merit Series ML17KC2 and ML13KC1. All current Lennox AC models use R-454B refrigerant — the new industry standard for 2025 and beyond. Chicago summers bring heavy humidity and long stretches of heat, demanding an air conditioning system capable of delivering strong, consistent cooling.
Our technicians provide expert diagnostics, manufacturer-approved AC installation, and precision setup to ensure your Lennox system operates at peak efficiency. Whether you're upgrading to a high-efficiency variable-capacity model or replacing an older unit, we offer clear pricing, fast service, and professional workmanship — all with no contracts required. Lennox air conditioners also help lower utility bills with energy-saving features, smart thermostat compatibility, and improved humidity control.
We specialize in Lennox split-system installation, ensuring your indoor coil and outdoor condenser are perfectly matched for maximum performance. Browse the full Lennox Systems Overview to compare models, or pair your new AC with a Lennox furnace for a matched system. Contact us for a free estimate today.
Dave Lennox Signature® Collection
Variable-capacity inverter technology. Up to 26 SEER2. Whisper-quiet operation.
Dave Lennox Signature® CollectionDave Lennox Signature® Collection
SL25KCV-024-230
Variable-Capacity Communicating Inverter System
Tonnage
2 Ton
SEER2
26.0
Refrigerant
R-454B
Home Size
1,000–1,400 Sq Ft
Sound
58 dB
Compressor
Variable Capacity DC Inverter
H × W × D
46.5" × 35.75" × 39.75"
Liquid Line
3/8"
Suction Line
3/4"
- Variable-capacity inverter compressor — precise cooling in small increments
- Up to 26 SEER2 — highest efficiency in the Lennox AC lineup
- Ultimate humidity control — removes moisture even at low demand
- Compatible with Lennox S40 Smart Thermostat
- Ultra-quiet 58 dB operation
*Local taxes may apply
Financing Available
Low monthly payment options available*
Unreal Comfort
The SL25KCV keeps our home at the exact temperature we set. Humidity is gone. Quieter than our old unit by a mile.
— Marcus T. — Lincoln Square
Dave Lennox Signature® CollectionDave Lennox Signature® Collection
SL25KCV-036-230
Variable-Capacity Communicating Inverter System
Tonnage
3 Ton
SEER2
23.5
Refrigerant
R-454B
Home Size
1,400–2,000 Sq Ft
Sound
58 dB
Compressor
Variable Capacity DC Inverter
H × W × D
46.5" × 35.75" × 39.75"
Liquid Line
3/8"
Suction Line
7/8"
- Variable-capacity inverter compressor
- Up to 23.5 SEER2 efficiency
- Superior humidity management
- Communicating system compatible
- Whisper-quiet 58 dB operation
*Local taxes may apply
Financing Available
Low monthly payment options available*
Best AC We've Had
Replaced a 15-year-old unit with the SL25KCV. The difference in comfort and quiet is night and day.
— Sandra K. — Wicker Park
Dave Lennox Signature® CollectionDave Lennox Signature® Collection
SL25KCV-048-230
Variable-Capacity Communicating Inverter System
Tonnage
4 Ton
SEER2
22.0
Refrigerant
R-454B
Home Size
2,000–2,800 Sq Ft
Sound
59 dB
Compressor
Variable Capacity DC Inverter
H × W × D
46.5" × 35.75" × 39.75"
Liquid Line
3/8"
Suction Line
7/8"
- Variable-capacity inverter compressor
- Up to 22.0 SEER2 efficiency
- Excellent humidity control
- Communicating system compatible
- Durable all-aluminum construction
*Local taxes may apply
Financing Available
Low monthly payment options available*
Handles Chicago Summers
The SL25KCV keeps up with the worst July heat waves. Efficient and quiet.
— James R. — Bridgeport
Dave Lennox Signature® CollectionDave Lennox Signature® Collection
SL25KCV-060-230
Variable-Capacity Communicating Inverter System
Tonnage
5 Ton
SEER2
22.5
Refrigerant
R-454B
Home Size
2,800–3,600 Sq Ft
Sound
60 dB
Compressor
Variable Capacity DC Inverter
H × W × D
46.5" × 35.75" × 39.75"
Liquid Line
3/8"
Suction Line
7/8"
- Variable-capacity inverter compressor
- Up to 22.5 SEER2 efficiency
- Excellent humidity control
- Communicating system compatible
- Built for large Chicago homes
*Local taxes may apply
Financing Available
Low monthly payment options available*
Perfect for Our Large Home
5-ton SL25KCV cools our entire 3,200 sq ft home evenly. No hot spots, no noise.
— Patricia W. — Beverly
Elite Series — EL22KCV
Variable-capacity inverter. Up to 22.9 SEER2. Premium comfort at a strong value.
Elite SeriesElite Series
EL22KCV-024-230
Variable-Capacity. Up to 22.9 SEER2.
Tonnage
2 Ton
SEER2
22.9
Refrigerant
R-454B
Home Size
900–1,300 Sq Ft
Sound
60 dB
Compressor
Variable Capacity
H × W × D
35.75" × 29.75" × 29.75"
Liquid Line
3/8"
Suction Line
3/4"
- Variable-capacity inverter compressor
- Up to 22.9 SEER2 efficiency
- Strong humidity management
- Quiet 60 dB operation
- Solid mid-tier value
*Local taxes may apply
Financing Available
Low monthly payment options available*
Great Mid-Range Choice
The EL22KCV is the sweet spot — variable-capacity comfort without the top-tier price tag.
— Denise M. — Hyde Park
Elite SeriesElite Series
EL22KCV-036-230
Variable-Capacity. Up to 22.9 SEER2.
Tonnage
3 Ton
SEER2
22.9
Refrigerant
R-454B
Home Size
1,200–1,600 Sq Ft
Sound
60 dB
Compressor
Variable Capacity
H × W × D
35.75" × 29.75" × 29.75"
Liquid Line
3/8"
Suction Line
7/8"
- Variable-capacity inverter compressor
- Up to 22.9 SEER2 efficiency
- Excellent humidity control
- Quiet 60 dB operation
- Communicating system compatible
*Local taxes may apply
Financing Available
Low monthly payment options available*
Excellent Efficiency
Utility bills dropped noticeably after installing the EL22KCV. Very happy with the performance.
— Robert C. — Logan Square
Elite SeriesElite Series
EL22KCV-048-230
Variable-Capacity. Up to 22.9 SEER2.
Tonnage
4 Ton
SEER2
22.9
Refrigerant
R-454B
Home Size
2,200–3,000 Sq Ft
Sound
62 dB
Compressor
Variable Capacity
H × W × D
38.75" × 35.75" × 35.75"
Liquid Line
3/8"
Suction Line
7/8"
- Variable-capacity inverter compressor
- Up to 22.9 SEER2 efficiency
- Excellent humidity control
- Quiet 62 dB operation
- Built for larger Chicago homes
*Local taxes may apply
Financing Available
Low monthly payment options available*
Handles Our Big House
4-ton EL22KCV keeps our 2,600 sq ft home perfectly cool all summer.
— Angela T. — Pilsen
Elite SeriesElite Series
EL22KCV-060-230
Variable-Capacity. Up to 22.9 SEER2.
Tonnage
5 Ton
SEER2
22.9
Refrigerant
R-454B
Home Size
2,800–3,800 Sq Ft
Sound
63 dB
Compressor
Variable Capacity
H × W × D
41.75" × 35.75" × 35.75"
Liquid Line
3/8"
Suction Line
7/8"
- Variable-capacity inverter compressor
- Up to 22.9 SEER2 efficiency
- Excellent humidity control
- Quiet 63 dB operation
- Maximum coverage for large homes
*Local taxes may apply
Financing Available
Low monthly payment options available*
Perfect for Our Large Home
5-ton EL22KCV handles our 3,400 sq ft home with ease. Quiet and efficient.
— Michael B. — Chatham
Merit Series — ML17KC2
Two-stage compressor. Up to 18 SEER2. Best value comfort for Chicago homes.
Merit SeriesMerit Series
ML17KC2-024-230
Two-Stage. Up to 18 SEER2.
Tonnage
2 Ton
SEER2
18.0
Refrigerant
R-454B
Home Size
900–1,300 Sq Ft
Sound
Quiet Operation
Compressor
Two-Stage Scroll
H × W × D
28.5" × 28.5" × 28.5"
Liquid Line
3/8"
Suction Line
3/4"
- Two-stage scroll compressor
- Up to 18 SEER2 efficiency
- Better humidity control than single-stage
- Quiet operation at low stage
- Reliable Chicago performance
*Local taxes may apply
Financing Available
Low monthly payment options available*
Great Value
The ML17KC2 is the perfect balance of efficiency and price. Very happy with the install.
— Kevin S. — Humboldt Park
Merit SeriesMerit Series
ML17KC2-036-230
Two-Stage. Up to 18 SEER2.
Tonnage
3 Ton
SEER2
18.0
Refrigerant
R-454B
Home Size
1,200–1,600 Sq Ft
Sound
Quiet Operation
Compressor
Two-Stage Scroll
H × W × D
28.5" × 28.5" × 28.5"
Liquid Line
3/8"
Suction Line
7/8"
- Two-stage scroll compressor
- Up to 18 SEER2 efficiency
- Better humidity control than single-stage
- Quiet operation at low stage
- Popular choice for Chicago bungalows
*Local taxes may apply
Financing Available
Low monthly payment options available*
Perfect for Our Bungalow
3-ton ML17KC2 is exactly what our Chicago bungalow needed. Efficient and quiet.
— Lisa M. — Portage Park
Merit SeriesMerit Series
ML17KC2-048-230
Two-Stage. Up to 18 SEER2.
Tonnage
4 Ton
SEER2
18.0
Refrigerant
R-454B
Home Size
1,800–2,400 Sq Ft
Sound
Quiet Operation
Compressor
Two-Stage Scroll
H × W × D
33.5" × 33.5" × 33.5"
Liquid Line
3/8"
Suction Line
7/8"
- Two-stage scroll compressor
- Up to 18 SEER2 efficiency
- Better humidity control than single-stage
- Quiet operation at low stage
- Handles larger Chicago homes
*Local taxes may apply
Financing Available
Low monthly payment options available*
Solid Performer
4-ton ML17KC2 keeps our 2,100 sq ft home cool all summer. Great value.
— David R. — Avondale
Merit SeriesMerit Series
ML17KC2-060-230
Two-Stage. Up to 18 SEER2.
Tonnage
5 Ton
SEER2
18.0
Refrigerant
R-454B
Home Size
2,800–3,800 Sq Ft
Sound
Quiet Operation
Compressor
Two-Stage Scroll
H × W × D
36.5" × 36.5" × 36.5"
Liquid Line
3/8"
Suction Line
7/8"
- Two-stage scroll compressor
- Up to 18 SEER2 efficiency
- Better humidity control than single-stage
- Quiet operation at low stage
- Maximum coverage for large homes
*Local taxes may apply
Financing Available
Low monthly payment options available*
Great for Large Homes
5-ton ML17KC2 handles our 3,000 sq ft home perfectly. Very efficient.
— Sharon T. — Norwood Park
Compare Lennox AC Models
Which Lennox Air Conditioner Is Right for Your Home?
| Model | Series | Tonnage | SEER2 | Sound | Compressor | Refrigerant | Best Use | Sale Price | Installed |
|---|---|---|---|---|---|---|---|---|---|
| SL25KCV | Signature | 2–5 Ton | Up To 26 SEER2 | 58 dB | Variable Capacity | R-454B | Luxury Homes | $19,500+ | $24,495+ |
| EL22KCV | Elite | 2–5 Ton | Up To 22.9 SEER2 | 60 dB | Variable Capacity | R-454B | High Efficiency | $12,000+ | $16,995+ |
| EL18KCV | Elite | 2–5 Ton | Up To 18.9 SEER2 | 67 dB | Variable Capacity | R-454B | Premium Value | $10,500+ | $15,495+ |
| EL16KC1 | Elite | 2–5 Ton | Up To 17.6 SEER2 | 72 dB | Single Stage | R-454B | Performance Value | $6,600+ | $11,595+ |
| EL15KC1 | Elite | 2–5 Ton | Up To 16 SEER2 | 72 dB | Single Stage | R-454B | Budget Friendly Elite | $6,000+ | $10,995+ |
| ML17KC2 | Merit | 2–5 Ton | Up To 18 SEER2 | Quiet | Two Stage | R-454B | Best Value Comfort | $5,850+ | $10,845+ |
| ML14KC1 | Merit | 2–5 Ton | Up To 17 SEER2 | Quiet | Single Stage | R-454B | Popular Value Choice | $4,350+ | $9,345+ |
| ML13KC1 | Merit | 1.5–5 Ton | Up To 16 SEER2 | Quiet | Single Stage | R-454B | Entry Level Efficiency | $3,900+ | $8,895+ |
| ML14XC1 | Merit | 1.5–5 Ton | Up To 17 SEER2 | Quiet | Single Stage | R-454B | Value Cooling | $4,200+ | $9,195+ |
What's Included
Professional Lennox AC Installation
Common Questions
Lennox AC Installation FAQ
Ready for a Lennox AC Installation?
D's Air & Heating, Inc. — Chicago's Authorized Lennox Dealer. No contracts. Upfront pricing. Licensed and insured.
Authorized Lennox Dealer Since 2010 • IL License #2183457 • No Contracts
Why Chicago Homeowners Trust D's Air & Heating
Licensed & Insured
IL License #2183457
Serving Chicago
Since 2009
Authorized Dealer
Multiple Brands
No Contracts
Ever — Guaranteed
Permit Pulled
Every Installation
Professional Standards
Code-Compliant Work
EPA Certified
Mainstream Engineering
R-410A Certified
Mainstream Engineering
Why Choose D's Air & Heating, Inc.?
Chicago's trusted HVAC company since 2009 — licensed, insured, and committed to honest workmanship on every job.
Experience Since 2009
D's Air & Heating has served Chicago homeowners and businesses since 2009. Over 15 years of local HVAC experience means we've seen every type of system, every Chicago building configuration, and every challenge the city's climate presents.
Manufacturer-Trained Technicians
Our technicians receive ongoing manufacturer training and certification. We install Lennox, Goodman, Amana, Daikin, Sinclair, Weil-McLain, Peerless, and other leading brands — and we know each system inside and out.
Licensed, Insured & Permitted
D's Air & Heating holds Illinois HVAC License #2183457 and carries full liability insurance. We pull City of Chicago permits on every installation — protecting you legally and ensuring the work meets code.
Honest Recommendations
We tell you what you need — not what generates the highest invoice. If your system can be repaired cost-effectively, we'll say so. If replacement makes more sense, we'll explain exactly why. No pressure, no upselling.
Local Chicago Expertise
We know Chicago's housing stock — two-flats, greystones, bungalows, vintage buildings with steam heat, modern construction with forced air. We size and install equipment for the specific demands of Chicago homes and Chicago winters.
Long-Term Customer Support
Our relationship doesn't end at installation. We register your equipment for warranty, remain available for follow-up questions, and provide ongoing maintenance to keep your system running at peak efficiency for years.
What Chicago Homeowners Should Know About AC Installation
How a Central Air Conditioner Works
A central AC system uses refrigerant to absorb heat from indoor air at the evaporator coil (inside your air handler or furnace), then releases that heat outside at the condenser coil. The refrigerant cycle repeats continuously, cooling and dehumidifying your home. Modern systems use R-454B or R-410A refrigerant and achieve 16–26 SEER2 efficiency ratings.
Understanding SEER2 Ratings
SEER2 (Seasonal Energy Efficiency Ratio 2) measures cooling output per unit of energy consumed. The federal minimum for Illinois is 14.3 SEER2. A 16 SEER2 unit uses roughly 10% less energy than a 14.3 SEER2 unit. High-efficiency variable-speed systems at 20+ SEER2 can cut cooling costs by 30–40% compared to older 10 SEER equipment.
Matched System Importance
An air conditioner condenser must be matched to the correct indoor coil (evaporator) and air handler or furnace. Mismatched components reduce efficiency, void manufacturer warranties, and can cause premature compressor failure. D's Air always installs matched, certified system combinations.
Cooling Design for Chicago Homes
Chicago's humid summers demand proper equipment sizing and refrigerant charge. An oversized AC cools quickly but short-cycles, leaving humidity high and comfort low. An undersized unit runs constantly and can't maintain setpoint on the hottest days. D's Air performs Manual J load calculations on every installation.
What to Expect From Your D's Air AC Installation
Free Estimate
We assess your home, review your existing ductwork and electrical, and provide a written quote with equipment options.
Equipment Selection
We recommend the right SEER2 level, brand, and matched system for your home, budget, and comfort goals.
Installation Day
Our crew arrives on time, installs the condenser, indoor coil, and all connections cleanly and to code.
Startup & Testing
We verify refrigerant charge, measure airflow, test the thermostat, and confirm proper cooling before we leave.
Customer Training
We walk you through your new system, thermostat settings, and filter maintenance schedule.
Warranty Support
We register your equipment for the full manufacturer warranty and remain available for follow-up service.
D's Air Installation Standards — Every AC Job
- Manual J load calculation for proper equipment sizing
- Matched condenser and indoor coil — certified system combination
- Refrigerant charge verified by weight and superheat/subcooling measurement
- Electrical disconnect, breaker, and wiring per NEC and local code
- Condensate drain properly pitched, trapped, and tested
- Airflow measurement across the coil — CFM verified
- Thermostat wiring and cooling mode test
- City of Chicago permit pulled on every installation
- Equipment registered for full manufacturer warranty
- Customer walkthrough of new system and filter location
What Our Customers Say
Based on Google Reviews — D's Air & Heating, Inc.
Marcus T.
Furnace Replacement
"D's Air & Heating did an outstanding job replacing my furnace. Darryl was professional, on time, and explained everything clearly. The installation was clean and the system works perfectly. Highly recommend."
Latoya W.
Boiler Repair
"Called D's Air when my boiler stopped working in January. They came out the same day, diagnosed the problem quickly, and had it running again within hours. Fair pricing and excellent service."
James R.
AC Installation
"Installed a new central AC system for us this summer. The crew was respectful of our home, cleaned up after themselves, and the system runs quietly and efficiently. Very satisfied."
Ready to Work With Chicago's Trusted HVAC Company?
D's Air & Heating, Inc. — Serving Chicago Since 2009. Licensed, Insured, No Contracts.
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 AC Features
- Up to 26 SEER2 efficiency — Dave Lennox Signature® SL25KCV
- Variable-capacity and two-stage compressor options
- R-454B refrigerant — 2025 industry standard
- 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 AC 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
- Lennox 10-Year Limited Parts Warranty — registered at installation
- 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 AC installation estimate and discover why Chicago homeowners continue to choose Lennox for dependable comfort and efficiency.
(773) 940-0965