Authorized Lennox dealer. Family-owned since 2009. Don't freeze, call D's…
Lennox Furnace Installation, Repair & Service in Chicago
When Chicago weather puts your furnace to the test, D's Air & Heating is ready to help.
We're a family-owned company that's served Chicago and the surrounding suburbs since 2009, and we work exclusively as an authorized Lennox dealer. That means every furnace we install, repair, or service is backed by real manufacturer support, not a guess. From a quick repair to a seasonal tune-up to a full replacement, our EPA certified technicians will walk you through what's going on and what it takes to fix it.
Authorized Lennox dealer (also Carrier & Green authorized)
Family-Owned Since 2009
EPA Certified Technicians
4.8★ Google Rating · 90+ Reviews
What Our Customers Say
See why our neighbors keep calling us back. Book Online and find out for yourself.
What Sets Us Apart
There's no shortage of HVAC companies to call, so here's what makes working with us different.
Detail-Oriented and Organized
We're an authorized Lennox dealer, and we're also authorized to sell and service Carrier and Green equipment. That means every furnace we recommend is backed by real manufacturer support, not just our word for it.
15% off, priority scheduling, and other member perks.
Join our maintenance agreement and you'll pay less for service, get seen first when the weather turns, and pick up other discounts reserved for members.
Family-owned since 2009.
We've been a family-owned business serving Chicago and the surrounding suburbs since 2009. When you call, you're talking to a local team, not a call center.
4.8 stars across 50+ Google reviews.
Our reputation comes from real customers, not curated testimonials, and we'd rather earn a good review than manufacture one.
EPA certified technicians.
Every technician we send out is EPA certified, so your furnace is handled correctly and safely from the first visit.
Ready to see the difference for yourself? Book Online or call 773-940-0965.
Gas Piping
New gas lines for ranges, fireplaces, and outdoor kitchens, installed to code by a licensed plumber who handles the permitting details.
Tank and tankless water heater installation and replacement, with a plain-language comparison so you know exactly what you're choosing.
Water Heater Installation
Central air and ductless mini-split installation, repair, and service, built to get you through a Chicago summer.
Air Conditioners
Our Furnace Services
Installation, repair, and service, all from one authorized Lennox dealer.
Gas Piping
New gas lines for ranges, fireplaces, and outdoor kitchens, installed to code by a licensed plumber who handles the permitting details.
Tank and tankless water heater installation and replacement, with a plain-language comparison so you know exactly what you're choosing.
Water Heater Installation
Furnace Installation
Replacing an old furnace or adding one to a new space? We'll size and install your Lennox furnace so it works right from day one, and we'll talk through financing and maintenance agreement options when we give you your estimate.
Furnace Repair
No heat is an emergency, and we treat it that way. Our EPA certified technicians will give you an honest read on what's wrong, repair what can be repaired, and only bring up replacement when it's genuinely the better option. Book online and we'll get out to you quickly.
Furnace Service
A yearly tune-up catches small problems before they turn into a no-heat emergency. Join our maintenance agreement and you'll get 15% off service, plus priority scheduling before winter's coldest weeks hit.
Gas Piping
New gas lines for ranges, fireplaces, and outdoor kitchens, installed to code by a licensed plumber who handles the permitting details.
Tank and tankless water heater installation and replacement, with a plain-language comparison so you know exactly what you're choosing.
Water Heater Installation
Central air and ductless mini-split installation, repair, and service, built to get you through a Chicago summer.
Air Conditioners
The often-overlooked half of your system, installed and maintained by the same technicians handling everything else.
Air Handlers
Ready to get started? Book Online or call 773-940-0965.
Why an Authorized Lennox dealer Matters
Lennox doesn't sell furnaces directly to homeowners. Only authorized dealers like us install, service, and repair Lennox equipment with full manufacturer backing, which means your install stays under warranty, your parts are genuine, and our technicians are trained specifically on the equipment going into your home. Read more on our Lennox dealer advantage page.
Have questions about which furnace is right for you?
Book a free estimate or
contact us.
Serving Chicago and the Surrounding Suburbs
We're based right here, and we install, repair, and service Lennox furnaces across the city and nearby suburbs, including Cicero, Berwyn, Oak Park, and Bensenville. See our full service area.
Not sure if we service your area?
Check our service area or
book online and we'll confirm.
Furnace Repair, Cost & Maintenance FAQ
Is D's Air & Heating an authorized Lennox dealer?
Yes. We're an authorized Lennox dealer, which means Lennox has certified us to sell, install, and service their equipment with full manufacturer backing behind it. We're also authorized to sell and service Carrier and Green equipment, and we've served Chicago and the surrounding suburbs since 2009. Learn more about our Lennox dealer status.
Why is my furnace blowing cold air instead of heat?
This is often a dirty filter, a pilot light or ignition problem, or a thermostat set to the wrong mode. It can also mean the furnace is overheating and shutting the burners off for safety. If cold air keeps happening, book a furnace repair and we'll track down the actual cause.
Why does my furnace keep turning on and off (short cycling)?
Short cycling is usually a sign of a clogged filter, a furnace that's too large for the space, or a failing sensor. Left alone, it puts extra wear on the system and can turn into a bigger repair. Our technicians can catch it during a furnace service visit or a repair call.
Why is my furnace making a loud banging or rattling noise?
A bang at startup can point to delayed ignition, while ongoing rattling often means a loose panel or a blower motor issue. Furnace noises rarely fix themselves and are worth having checked before they turn into a no-heat situation. Schedule a repair and we'll take a look.
Why did my energy bill go up even though my furnace hasn't changed?
An aging furnace, a dirty filter, or a system that's no longer running efficiently can all drive up your bill with no obvious sign of a problem. A yearly tune-up usually catches this before it gets expensive. Book a furnace service visit to have it checked.
How often should a furnace be serviced?
We recommend a professional tune-up once a year, ideally in early fall before heating season starts. Our maintenance agreement includes this visit at a discounted rate for members. See maintenance agreement details.
How much does furnace installation cost in Chicago?
It depends on the size of the furnace, its efficiency rating, and your home's existing ductwork, so cost varies from house to house. We'll give you a free, itemized estimate before any work begins, and financing is available if you qualify. Book your free estimate.
What should I do if my furnace stops working in winter?
Call us or book online right away. A furnace that won't turn on or won't heat is an emergency, and we treat it like one. Our EPA certified technicians will diagnose the issue and recommend the most cost-effective fix.
Still have a furnace question? Contact us or call 773-940-0965.
Don't freeze, call D's… Book your Lennox furnace installation, repair, or service online, or call 773-940-0965.