Lennox Garage & Unit Heaters Installed by D's Air & Heating, Inc. | Chicago
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 Garage & Unit Heaters Installed by D's Air & Heating
D's Air & Heating, Inc. installs Lennox® LF25 unit heaters for residential garages, workshops, commercial bays, and warehouse spaces throughout Chicago. Professional installation, gas assembly, venting, and startup included.
Lennox LF25 Series
30,000 – 105,000 BTU · 83% AFUE
Lennox LS25 Series
Larger Capacity Applications
Lennox LF25 Unit Heaters — Installed Pricing
All prices include equipment, mounting, gas assembly, vent assembly, electrical connection, thermostat wiring, startup, and testing. *Local taxes may apply.
LF25-030A
Lennox LF25 Series · 30,000 BTU
Financing Available · *Local taxes may apply
Best Used For
- 1 Car Garage
- Small Workshop
- Storage Buildings
- Utility Rooms
The LF25-030A delivers 30,000 BTU of reliable heat — the right size for a single-car garage, small workshop, or utility room up to 700 square feet. Compact dimensions make it easy to mount in tight spaces with minimal ceiling clearance.
LF25-045A
Lennox LF25 Series · 45,000 BTU
Financing Available · *Local taxes may apply
Best Used For
- Large 1 Car Garage
- 2 Car Garage
- Hobby Workshop
- Small Commercial Spaces
The LF25-045A provides 45,000 BTU for a large single-car or standard two-car garage up to 900 square feet. Popular for hobby workshops and small commercial spaces that need dependable heat through Chicago winters.
LF25-060A
Lennox LF25 Series · 60,000 BTU
Financing Available · *Local taxes may apply
Best Used For
- Oversized 2 Car Garage
- Woodworking Shops
- Automotive Work Areas
- Commercial Workshops
The LF25-060A outputs 60,000 BTU — ideal for an oversized two-car garage, woodworking shop, or automotive work area up to 1,200 square feet. A popular choice for tradespeople and hobbyists who need serious heat output.
LF25-075A
Lennox LF25 Series · 75,000 BTU
Financing Available · *Local taxes may apply
Best Used For
- 3 Car Garages
- Large Workshops
- Fabrication Areas
- Small Warehouses
The LF25-075A delivers 75,000 BTU for three-car garages, large workshops, and fabrication areas up to 1,500 square feet. Handles Chicago's coldest days without breaking a sweat — built for spaces that demand consistent, powerful heat.
LF25-090A
Lennox LF25 Series · 90,000 BTU
Financing Available · *Local taxes may apply
Best Used For
- Commercial Garages
- Large Workshops
- Equipment Storage Buildings
- Warehouse Spaces
The LF25-090A produces 90,000 BTU for commercial garages, large equipment storage buildings, and warehouse spaces up to 1,800 square feet. Designed for demanding commercial environments where reliable heat is non-negotiable.
LF25-105A
Lennox LF25 Series · 105,000 BTU
Financing Available · *Local taxes may apply
Best Used For
- Large Commercial Garages
- Warehouses
- Commercial Service Shops
- Industrial Work Areas
The LF25-105A is the highest-output model in the LF25 series at 105,000 BTU — engineered for large commercial garages, warehouses, commercial service shops, and industrial work areas up to 2,200 square feet.
Lennox LS25 Unit Heater — Larger Capacity Applications
The LS25 provides increased application flexibility for larger garages, warehouses, and commercial utility spaces requiring consistent high-output heating performance.
Lennox LS25 Unit Heater
The Lennox LS25 unit heater provides increased application flexibility for homeowners and businesses needing reliable comfort in larger utility spaces. Designed for durability and dependable operation, the LS25 is ideal where consistent heating performance is required across larger square footage.
- Large garages & workshops
- Warehouses & storage areas
- Commercial utility spaces
- Multi-bay service areas
- Industrial work environments
Financing Available · *Local taxes may apply
LF25 Installation Package
Installation Includes
- Unit Heater Installation
- Equipment Mounting
- Gas Assembly
- Vent Assembly
- Electrical Connection
- Thermostat Wiring
- Startup & Testing
- Safety Verification
- Performance Verification
- Customer Walkthrough
- Cleanup
Exclusions
- Gas Line Extensions
- Dedicated Electrical Circuits
- Structural Modifications
- Lift Rentals
- Specialty Venting
- Permit Fees
Lennox LF25 Garage Heaters Installed by D's Air & Heating, Inc.
The Lennox LF25 series is a line of natural gas unit heaters designed for residential garages, workshops, commercial bays, and warehouse spaces where forced-air duct systems are impractical or unavailable. Available in six capacities from 30,000 BTU to 105,000 BTU, the LF25 delivers 83% AFUE efficiency in a compact, ceiling-mounted cabinet that installs quickly and operates reliably through Chicago's demanding heating season.
Unit heaters are the preferred heating solution for detached garages, woodworking shops, automotive work areas, fabrication spaces, and light commercial warehouses. Unlike central forced-air systems, unit heaters heat the space directly without ductwork — making them faster to install, easier to service, and more cost-effective for spaces that are not connected to the home's main HVAC system.
D's Air & Heating, Inc. is an Authorized Lennox dealer serving Chicago since 2010. Every LF25 installation includes equipment mounting, gas assembly, vent assembly, electrical connection, thermostat wiring, startup procedures, safety testing, performance verification, and customer walkthrough. We pull all required permits and handle every step of the installation from start to finish.
Whether you're heating a single-car garage, a three-car workshop, or a commercial service bay, D's Air & Heating can size and install the right LF25 model for your space. Contact us for a free estimate and current LF25 pricing. Equipment specifications, pricing, and available incentives may change without notice.
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.
HVAC Education — What Chicago Homeowners Should Know
How Your HVAC System Works Together
A complete HVAC system includes a heating source (furnace or boiler), a cooling source (air conditioner or heat pump), air distribution (ductwork or hydronic piping), and controls (thermostat). Each component must be properly sized and matched to work efficiently. D's Air installs and services all components as a complete system.
Chicago's Climate Demands
Chicago experiences some of the most extreme temperature swings in the country — from -20°F wind chills in winter to 100°F heat indexes in summer. Your HVAC equipment must be sized and installed to handle both extremes reliably. D's Air has served Chicago since 2009 and understands what local homes require.
The Importance of Annual Maintenance
Annual tune-ups extend equipment life, maintain efficiency, and catch problems before they become failures. A well-maintained furnace lasts 20+ years. A neglected one may fail at 12–15 years. D's Air offers annual maintenance plans for both heating and cooling equipment.
Energy Efficiency and Savings
Upgrading from a 10 SEER AC to a 16 SEER unit cuts cooling costs by roughly 37%. Upgrading from an 80% AFUE furnace to a 96% AFUE unit cuts heating costs by about 17%. Over 10–15 years, these savings typically exceed the cost difference between standard and high-efficiency equipment.
What to Expect From D's Air & Heating
Contact
Call or book online. We respond promptly and schedule at your convenience.
Assessment
We evaluate your system, your home, and your needs before making any recommendation.
Written Estimate
You receive a clear, written estimate before any work begins. No surprises.
Professional Work
Our technicians are trained, licensed, and take pride in clean, code-compliant installations.
Testing
We test every system thoroughly before we leave and explain what was done.
Follow-Up
We remain available for questions, warranty support, and future service.
D's Air Professional Standards
- Licensed and insured — IL License #2183457
- Serving Chicago since 2009
- Proper load calculations on every installation
- City of Chicago permits pulled on every installation
- Equipment registered for full manufacturer warranty
- No contracts required — ever
- Transparent pricing — written estimates before any work
- Clean jobsite — we protect your home and clean up completely
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."
Sandra M.
Lennox Installation
"D's Air has been our go-to HVAC company for years. They installed our Lennox furnace and have maintained it ever since. Honest, reliable, and they never try to upsell you on things you don't need."
Kevin B.
HVAC Installation
"Professional from start to finish. They pulled the permit, did the installation correctly, and registered the equipment for warranty. That attention to detail is why I keep calling D's Air."
Denise H.
Furnace Repair
"Great experience overall. The technician was knowledgeable and took the time to walk me through the new system. Pricing was transparent with no hidden fees. Would definitely use again."
Ready to Work With Chicago's Trusted HVAC Company?
D's Air & Heating, Inc. — Serving Chicago Since 2009. Licensed, Insured, No Contracts.
Ready to Heat Your Garage or Workshop?
D's Air & Heating, Inc. — Authorized Lennox dealer serving Chicago since 2010. Call or request a free estimate today.