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 Combo System Installation Chicago
Complete AC + Furnace + Coil matched systems — Merit, Elite, and Dave Lennox Signature Series. AHRI-certified. Installed by D's Air & Heating, Inc., Chicago's Lennox Premier dealer.
Why a Matched Lennox Combo System?
A matched Lennox combo system — outdoor AC or heat pump, indoor furnace, and evaporator coil — is the only way to achieve the full rated SEER2 and AFUE efficiency published by Lennox. Mismatched components leave efficiency on the table, void portions of the manufacturer warranty, and can cause premature equipment failure. As a Lennox Premier dealer, D's Air & Heating, Inc. installs only AHRI-certified matched systems.
Every Lennox combo installation by D's Air begins with a Manual J load calculation — the only accurate method for sizing heating and cooling equipment. We pull permits, handle city inspections, commission the system to Lennox specifications, and register your warranty directly with Lennox at installation. No shortcuts, no subcontractors.
Chicago's climate demands equipment built for both extremes — brutal winters and hot, humid summers. Lennox combo systems are engineered for the North Central climate zone, with AHRI-verified performance ratings under the updated M1 test procedure. Every combo D's Air installs qualifies for utility rebates where applicable and meets DOE regional efficiency standards.
Lennox Combo Systems — At a Glance
3 Series Tiers
Merit · Elite · Dave Lennox Signature Collection
AHRI-Certified Matched
Full three-component system match — outdoor, furnace, coil
Up to 26 SEER2
Variable-capacity Signature Series — industry-leading efficiency
Available Lennox Combo Systems
Seven system configurations — from Merit budget to Dave Lennox Signature premium
Furnace + Air Conditioner
Matched Lennox gas furnace and central AC condenser with evaporator coil. Handles both heating and cooling through your existing ductwork.
Heat Pump + Air Handler
All-electric heating and cooling. The Lennox heat pump handles both modes; the air handler distributes conditioned air.
Dual Fuel Systems
Lennox heat pump paired with a gas furnace backup. The heat pump handles mild weather; the furnace takes over in extreme cold.
High-Efficiency Comfort Systems
18+ SEER2 condenser with a two-stage or variable-speed furnace. Quieter, more consistent comfort and lower utility bills.
Variable Speed Systems
Inverter-driven condenser with a variable-speed furnace and ECM air handler. Runs at partial capacity most of the time.
Budget Systems
Merit Series single-stage 14.3 SEER2 condenser with an 80% AFUE furnace. Meets all current efficiency minimums at the lowest installed price.
Premium Systems
Dave Lennox Signature Series 26 SEER2 inverter condenser with a 99% AFUE variable-speed furnace. Maximum efficiency and rebate eligibility.
Lennox Combo System Tiers
Merit · Elite · Dave Lennox Signature Collection
*Installed prices include equipment, labor, standard refrigerant charge, and startup. Local taxes may apply. Financing available.
| Component | Merit — Good | Elite — Better | Signature — Best |
|---|---|---|---|
| Outdoor AC | ML13KC1 Merit | EL18KCV Elite | SL25KCV Signature |
| Cooling SEER2 | 13.4 SEER2 | 18 SEER2 | Up to 26 SEER2 |
| Furnace | ML180E 80% AFUE | EL296V 96% AFUE | SL280V 80% AFUE |
| Evaporator Coil | CBA25UH A-Coil | CBA38MV Variable-Speed | CBA38MV Variable-Speed |
| Thermostat | Standard | iComfort Digital | iComfort S40 Smart |
| Filtration | Basic | MERV-11 | MERV-13 + PureAir IAQ |
| Installed Range | $9,800–$14,200 | $14,800–$21,500 | $21,500–$32,000 |
Merit Series — Good
Proven Lennox reliability at an accessible price point
Included
- 13.4 SEER2 single-stage cooling
- 80% AFUE single-stage heating
- AHRI-certified matched system
- 10-Year Lennox parts warranty
- Permit, startup & warranty registration included
Installed Price Range
$9,800–$14,200
*Local taxes may apply. Financing available.
Elite Series — Better
Two-stage cooling, variable-speed heating — Elite efficiency
Included
- Up to 18 SEER2 two-stage cooling
- 96% AFUE variable-speed heating
- iComfort communicating thermostat
- AHRI-certified matched system
- 10-Year Lennox parts warranty
Installed Price Range
$14,800–$21,500
*Local taxes may apply. Financing available.
Dave Lennox Signature — Best
Industry-leading efficiency — variable-capacity cooling, 99% AFUE heating
Included
- Up to 26 SEER2 variable-capacity cooling
- iComfort S40 smart thermostat included
- PureAir IAQ air purification
- AHRI-certified matched system
- 10-Year Lennox parts warranty
Installed Price Range
$21,500–$32,000
*Local taxes may apply. Financing available.
Equipment & Materials Included
D's Air & Heating provides all labor, equipment, and materials for a complete installation.
Labor Breakdown
Transparent scope — every task, every hour.
EPA-Matched Combo Systems
All Lennox combo installations include AHRI-verified EPA matching — outdoor unit, furnace, and coil are verified together so your system qualifies for utility rebates and meets regional efficiency standards.
Outdoor AC or Heat Pump Model
Lennox condenser matched to your home's cooling load and the North Central climate zone.
Indoor Furnace Model
Matched Lennox furnace verified as part of the full AHRI system certificate.
Indoor Coil Model
AHRI-certified matched coil completing the full three-component system match.
AHRI Reference Number (Full System)
One traceable AHRI certificate number covering the entire matched combo system.
SEER2 / EER2 / AFUE Ratings
Confirmed cooling and heating efficiency ratings under the updated M1 test procedure.
Utility Rebate Eligibility
Matched combo systems qualify for ComEd and Nicor Gas rebate programs where applicable.
Why D's Air & Heating, Inc. for Lennox Combo Installation
Lennox Premier dealer
Factory-trained on every Lennox model. We pull permits, register warranties, and commission systems to Lennox spec.
Matched System Efficiency
Lennox-matched components unlock the full rated SEER2 and AFUE — mismatched systems leave efficiency on the table.
Manual J Load Calculation
Every combo installation begins with a proper load calculation. Right-sizing is the single most important factor in system performance.
AHRI-Certified Matching
We verify the AHRI certificate number covering the full three-component system before ordering — ensuring rebate eligibility and regional compliance.
Licensed & Permitted
IL License #2183457. All work is permitted, inspected, and backed by D's Air's installation guarantee.
No Contracts Required
D's Air never requires service contracts. Your Lennox manufacturer warranty is registered directly — no middleman, no hidden fees.
Our Installation Process
Free In-Home Estimate
A D's Air technician visits your home, performs a Manual J load calculation, and recommends the right Lennox combo tier for your space, budget, and efficiency goals.
AHRI Match Verification
We verify the AHRI-certified three-component match — outdoor unit, furnace, and coil — before ordering, ensuring full efficiency ratings and rebate eligibility.
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 your Lennox combo system — outdoor unit, furnace, coil, refrigerant lines, gas piping, venting, and thermostat — to Lennox specifications.
System Startup & Warranty Registration
We verify refrigerant charge, airflow, combustion, and thermostat operation before leaving. Warranty is registered directly with Lennox at installation.
Lennox Warranty
- 10-Year Parts Warranty — registered at installation
- D's Air registers directly with Lennox — no extra steps
- Must be registered within 60 days of installation
- Covers all factory-installed components
- Signature Series: Extended warranty options available
Financing Options
- $0 down for qualified customers
- Flexible monthly payment options
- Apply during your free estimate
- Fast approval — same-day decisions available
- Covers full system — equipment + installation
Lennox Combo Installation Service Area
D's Air & Heating, Inc. installs Lennox combo systems throughout Chicago and the surrounding suburbs.
Frequently Asked Questions
What is a matched Lennox combo system?
A matched Lennox combo system is an AHRI-certified combination of outdoor AC or heat pump, indoor furnace, and evaporator coil that have been tested together and verified to achieve the published SEER2 and AFUE ratings. Matched systems qualify for utility rebates, meet DOE regional efficiency standards, and carry the full Lennox manufacturer warranty.
What is the difference between Merit, Elite, and Dave Lennox Signature Series?
Merit Series is Lennox's proven entry-level lineup — single-stage cooling and heating at an accessible price. Elite Series adds two-stage cooling and variable-speed heating for better comfort and efficiency. The Dave Lennox Signature Collection is the top tier — variable-capacity cooling up to 26 SEER2, iComfort S40 smart thermostat, and PureAir IAQ for the ultimate in comfort and efficiency.
How long does a Lennox combo system installation take?
Most Lennox combo replacements take one full day — typically 6–8 hours. New installations requiring ductwork modifications may take longer. We'll give you a time estimate before we start.
Does a Lennox combo system qualify for utility rebates in Chicago?
Yes. Higher-efficiency Lennox combo systems may qualify for ComEd or Nicor Gas rebates. The federal Inflation Reduction Act also provides a 30% tax credit up to $600 for qualifying AC equipment and up to $600 for qualifying furnaces. Ask during your free estimate.
Is financing available for a Lennox combo system installation?
Yes. Qualified customers can finance their Lennox combo installation with $0 down. Ask about current rates when you schedule your free estimate.
Why does D's Air only install matched Lennox systems?
Mismatched components — for example, a Lennox outdoor unit paired with a non-Lennox coil — cannot achieve the published SEER2 rating, may void portions of the manufacturer warranty, and can cause premature equipment failure. AHRI-certified matched systems are the only way to guarantee the efficiency and reliability you're paying for.
Get a Free Lennox Combo System Estimate
Upfront pricing, no contracts, same-week scheduling available.
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 Combo System Installation Chicago | Merit, Elite & Signature | D's Air & Heating, Inc. Features
- Complete matched heating and cooling system
- Optimized efficiency when components are paired
- Single-source installation and warranty
- Smart thermostat compatibility
- Lennox 10-Year Parts Warranty when registered
- Lower utility costs year-round
- Reliable Chicago climate 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 Combo System Installation Chicago | Merit, Elite & Signature | D's Air & Heating, Inc. installation estimate and discover why Chicago homeowners continue to choose Lennox for dependable comfort and efficiency.
(773) 940-0965