Chicago's Authorized Lennox dealer Since 2010
D's Air & Heating is a Authorized Local Chicago Lennox dealer since 2010.
Lennox SLP99V
Dave Lennox Signature® Collection
Up to 99% AFUE · Variable-Capacity
Up to 99% AFUE Dave Lennox Signature® Collection. Installed by D's Air & Heating, Inc. — Chicago's authorized Lennox dealer since 2010.
Sale Price
$6,384
Installed Price
$9,584
The Lennox SLP99V is the flagship gas furnace in the Dave Lennox Signature® Collection, rated at up to 99% AFUE — the highest efficiency rating in the Lennox residential furnace lineup. Its variable-capacity gas valve and variable-speed blower motor continuously modulate output to match your home's exact heating demand, delivering the most consistent temperatures, the best humidity control, and the quietest operation available in a Lennox residential furnace.
At 99% AFUE, the SLP99V converts 99 cents of every dollar of natural gas into usable heat — leaving virtually nothing to waste. For Chicago homeowners facing Peoples Gas bills that spike every January and February, the SLP99V's efficiency advantage over a standard 80% AFUE furnace translates directly to measurable monthly savings. Available in upflow and downflow configurations across multiple BTU capacities, the SLP99V covers the full range of Chicago residential applications.
The SLP99V is iComfort® Ready — designed to communicate with Lennox's S40 Smart Thermostat for remote monitoring, self-diagnostics, and optimized performance. D's Air & Heating, Inc. installs the SLP99V throughout Chicago and the surrounding suburbs as a Lennox Premier Dealer. Every installation includes a free Manual J heat load calculation, City of Chicago mechanical permit, city inspection coordination, and Lennox 10-Year Parts Warranty registration. Call (773) 940-0965 to schedule your free in-home estimate.
Why D's Air & Heating, Inc. Recommends the Lennox SLP99V
Technical Specifications — Lennox SLP99V
| Model Number | SLP99V |
| Product Category | Gas Furnace |
| Brand | Lennox |
| Product Series | Dave Lennox Signature® Collection |
| Equipment Type | Gas Furnace |
| AFUE Rating | Up to 99% AFUE |
| Stage | Variable-Capacity |
| Blower Type | Variable-Speed ECM |
| Gas Valve | Variable-Capacity Modulating |
| Fuel Type | Natural Gas (LP convertible) |
| Heating Capacity | 135,000 BTU |
| Configuration | Upflow (UH) and Downflow (DF) |
| Venting | PVC — 2-pipe direct vent |
| iComfort Compatibility | iComfort® Ready — S40 Smart Thermostat |
| ENERGY STAR Status | ENERGY STAR Certified |
| Warranty | 10-Year Limited Parts (registered within 90 days) |
| Sale Price | $6,384 |
| Installed Price | $9,584 |
Lennox SLP99V — Installed Pricing
Installed price includes equipment, labor, permit, and startup. *Local taxes may apply.
| Model / BTU | Equipment Sale | Installed Price | Financing |
|---|---|---|---|
| SLP99UH070XV36BK — 70K BTU Upflow | $6,384 | $9,584 | Available |
| SLP99UH090XV36CK — 90K BTU Upflow | $6,758 | $9,958 | Available |
| SLP99UH090XV48CK — 90K BTU Upflow | $7,082 | $10,282 | Available |
| SLP99UH090XV60CK — 90K BTU Upflow | $7,418 | $10,618 | Available |
| SLP99UH110XV60CK — 110K BTU Upflow | $7,493 | $10,693 | Available |
| SLP99UH135XV60DK — 135K BTU Upflow | $7,913 | $11,113 | Available |
| SLP99DF070XV36BK — 70K BTU Downflow | $7,018 | $10,218 | Available |
| SLP99DF090XV36CK — 90K BTU Downflow | $7,392 | $10,592 | Available |
| SLP99DF090XV48CK — 90K BTU Downflow | $7,713 | $10,913 | Available |
| SLP99DF090XV60CK — 90K BTU Downflow | $7,891 | $11,091 | Available |
| SLP99DF110XV60CK — 110K BTU Downflow | $8,171 | $11,371 | Available |
SLP99UH070XV36BK — 70K BTU Upflow
$6,384
$9,584
SLP99UH090XV36CK — 90K BTU Upflow
$6,758
$9,958
SLP99UH090XV48CK — 90K BTU Upflow
$7,082
$10,282
SLP99UH090XV60CK — 90K BTU Upflow
$7,418
$10,618
SLP99UH110XV60CK — 110K BTU Upflow
$7,493
$10,693
SLP99UH135XV60DK — 135K BTU Upflow
$7,913
$11,113
SLP99DF070XV36BK — 70K BTU Downflow
$7,018
$10,218
SLP99DF090XV36CK — 90K BTU Downflow
$7,392
$10,592
SLP99DF090XV48CK — 90K BTU Downflow
$7,713
$10,913
SLP99DF090XV60CK — 90K BTU Downflow
$7,891
$11,091
SLP99DF110XV60CK — 110K BTU Downflow
$8,171
$11,371
*Local taxes may apply. Financing available for qualified customers. Prices subject to change.
What's Included — Lennox SLP99V Installation
Scope of Work
- Free in-home Manual J heat load calculation to determine correct furnace size
- Removal and disposal of existing furnace
- Installation of new Lennox furnace in existing or new location
- Gas line inspection — extension or upgrade quoted separately if required
- Flue venting inspection and replacement as required by code
- Electrical connection and wiring inspection
- Condensate drain installation (90%+ AFUE models)
- Thermostat verification and programming
- City of Chicago mechanical permit pulled and inspection scheduled
- Lennox 10-Year Parts Warranty registered at installation
- D's Air 2-Year Workmanship Warranty applied
- Post-installation system performance verification and combustion analysis
Equipment & Materials
- Lennox furnace unit (model as specified)
- PVC condensate drain line and trap (90%+ AFUE)
- PVC flue venting (90%+ AFUE) or B-vent (80% AFUE)
- Gas flex connector
- Electrical disconnect and wiring (if required)
- Filter rack and media filter (if required)
- City of Chicago mechanical permit
Labor Breakdown
- Manual J heat load calculation
- Existing furnace removal and disposal
- New furnace placement and leveling
- Gas line connection and pressure test
- Flue venting installation and code compliance verification
- Electrical connection and startup
- Condensate drain installation and test (90%+ AFUE)
- Combustion analysis and performance verification
- City permit and inspection coordination
- Lennox warranty registration
Warranty Coverage — Lennox SLP99V
Lennox Manufacturer Warranty
- 10-Year Limited Parts Warranty
- Compressor Coverage Included
- Registration Required at Installation
- D's Air Registers at Install — No Action Needed
D's Air Workmanship Warranty
- 2-Year D's Air Workmanship Warranty
- Startup Verification Included
- Installation Quality Assurance
- Warranty Registered at Installation
Frequently Asked Questions — Lennox SLP99V
What makes the SLP99V the top Lennox furnace?
The SLP99V reaches up to 99% AFUE — the highest efficiency rating in the Lennox residential furnace lineup. Its variable-capacity gas valve and variable-speed blower modulate output continuously, delivering the most consistent temperatures, best humidity control, and quietest operation available in a Lennox furnace.
How much can I save on heating bills with a 99% AFUE furnace?
A 99% AFUE furnace converts 99 cents of every dollar of natural gas into heat. Compared to a standard 80% AFUE furnace, the SLP99V wastes 19% less fuel — a meaningful difference on Chicago's Peoples Gas bills during January and February heating peaks.
What is the difference between upflow and downflow SLP99V models?
Upflow models (SLP99UH) discharge heated air upward — used in basements and utility rooms where ductwork runs above the furnace. Downflow models (SLP99DF) discharge heated air downward — used in attics, closets, and utility rooms where ductwork runs below. D's Air determines the correct configuration during the free in-home estimate.
How much does a Lennox SLP99V installation cost in Chicago?
Equipment sale starts at $6,384 for the 70K BTU upflow model. Installed price starts at $9,584. See the full pricing table above for all BTU sizes and configurations. Call (773) 940-0965 or request a free estimate online.
Does the SLP99V require PVC venting?
Yes. At 99% AFUE, the SLP99V is a condensing furnace — its exhaust gases are cool enough to be vented through PVC pipe rather than metal flue. D's Air installs all required PVC venting as part of every SLP99V installation.
Does D's Air pull permits for Lennox furnace installations in Chicago?
Yes. The City of Chicago requires a mechanical permit for every furnace replacement. D's Air & Heating, Inc. pulls all required permits and coordinates city inspections on every installation. IL License #2183457.
Does D's Air register the Lennox warranty?
Yes. D's Air & Heating, Inc. registers your Lennox 10-Year Limited Parts Warranty at installation. You do not need to register separately.
Is financing available for Lennox furnace installations?
Yes. D's Air & Heating, Inc. offers multiple financing programs for qualified customers, including low monthly payment options with fast approval. Ask about current promotions during your free estimate.
How long does a Lennox furnace installation take?
A standard furnace replacement is typically completed in one day. Jobs involving gas line extensions, venting modifications, or electrical upgrades may require additional time.
What is D's Air's service area for Lennox furnace installations?
D's Air & Heating, Inc. serves Chicago and surrounding communities including Niles, Skokie, Morton Grove, Park Ridge, Rosemont, Harwood Heights, Norridge, Des Plaines, Lincolnwood, Elmwood Park, Evanston, and Oak Park.
Service Areas — Lennox SLP99V Installation
Why Choose Lennox?
D's Air & Heating is a Authorized Local Chicago Lennox dealer 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 that Chicago homeowners depend on year after year.
Why Choose D's Air & Heating?
D's Air & Heating is a Authorized Local Chicago Lennox dealer since 2010.
We provide professional installation, replacement, repair, and maintenance services for the complete line of Lennox heating and cooling products throughout Chicago and surrounding communities. As an Authorized Local Chicago Lennox dealer since 2010, we install genuine Lennox equipment according to manufacturer specifications and industry best practices.
When you choose D's Air & Heating for your Lennox installation or replacement project, you receive expert guidance, professional workmanship, and access to one of America's most trusted HVAC brands. Our team helps homeowners maximize comfort, energy efficiency, and long-term system reliability through properly designed Lennox comfort solutions.
Gas Furnace Features
The Lennox SLP99V is engineered for reliable, efficient performance in Chicago's climate. Every unit is manufactured to Lennox's exacting standards and backed by the Lennox manufacturer warranty when registered at installation.
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 a Authorized Local Chicago Lennox dealer since 2010.
Contact D's Air & Heating, an Authorized Local Chicago Lennox dealer since 2010, at (773) 940-0965 to schedule your free estimate for Lennox SLP99V installation, replacement, maintenance, or repair.
Get a Free Installation Estimate
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