Furnace, Boiler, and AC Repair in Downers Grove, IL
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Downers Grove HVAC Services
For nearly 30 years, TDH Mechanical has been a trusted provider of Downers Grove HVAC services. Not only are we Chicagoland’s largest HVAC contractor, but we’re also proud to be known as Chicagoland’s Most Trusted Trane dealer! We’re committed to ensuring that your home stays comfortable and safe, year-round.
Downers Grove Air Conditioning Install & Repair
Downers Grove Heating/Furnace Install & Repair
Downers Grove Indoor Air Quality
Downers Grove Air Conditioning
As your Downers Grove Illinois air conditioning company, you can count on us for fast, affordable air conditioning installation and repair services. No matter what make and model you own, we have the techs, tools, and training to repair your AC unit. Need a new air conditioning unit? We offer the industries top Trane air conditioners to keep your home protected from the heat.
Downers Grove Heating
Looking to prepare your home for the cold months ahead? At TDH Mechanical, we deliver reliable Downers Grove HVAC services that include industry-leading Arlington Heights heating systems. Our installations are quick, ensuring that your home never goes long without heating. We also offer same-day service for repairs on furnaces and heaters to help you stay comfortable year-round.
Downers Grove Indoor Air Quality
Your Downers Grove indoor air quality is an important maintenance aspect of your home that is often overlooked. From minor allergens to serious hazards, your air ducts can collect years’ worth of dust, mold, and debris. That’s why we offer several solutions to keep your Arlington Heights’s home air quality as clean as possible—at a price you can afford.
Schedule HVAC Services in Downers Grove
When your Downers Grove home needs heating, cooling, or ventilation service, go to the one-stop source you can rely on for top-quality service every time. Choose TDH Mechanical and get the AC and furnace maintenance and installation solutions you need at a price you can afford. Give our friendly team a call to learn more, or fill out our online form to schedule your free quote today!
Our Services
Air Conditioners
We can handle all your AC needs, from repair and maintenance, to installation, and more.
Furnaces
Keep your furnace running smootly, or get a new one installed. Either way, we've got you covered.
Boilers & Water Heaters
Whatever boiler system is used in your home or business, it is important to keep it running efficiently.
Air Duct Cleaning
Reputable and professional duct cleaning does make a difference in your indoor air quality!
Air Quality
If people inside your home have allergies or respiratory issues, cleaning up the air will help.
Commercial
If you are a property manager, you know how important it is to keep the heating & cooling systems running smoothly.
HOW ARE WE DIFFERENT?
What sets us apart from other HVAC companies?
We have been around since 1985, and have over 30 years of experience.
We serve over 200 towns throughout the Chicago area including, Saint Charles and Batavia.
Our team is NATE and EPA certified, and comply with industry codes and standards.
We do not subcontract our work to third parties. Your technician is a full-time professional at TDH Mechanical, handpicked by Tim himself.
We have a team of loyal HVAC professionals, some of whom have been with us for several years. This results in dedicated experts who are interested in building long-term relationships with our customers.
We are authorized Carrier dealers and offer the Carrier Satisfaction Guarantee.
Top notch, truly personalized service from start to finish. No matter the extent of the job.
There is no problem too small or overwhelming for our team to tackle. We treat each and every service call with the same level of urgency, whether it’s a new furnace installation or air duct cleaning. All of our HVAC technicians carry a customer-first mindset, allowing you to benefit from unparalleled workmanship and a close attention to detail. Our goal is the same as yours: to help you experience a truly comfortable home environment without unexpected interruptions from your heating and cooling system.
Downers Grove, Illinois
Downers Grove was founded in 1832 by Pierce Downer, a farmer who traveled to Illinois from Rutland, New York, but was originally from Vermont. Its other early settlers included the Blodgett, Curtiss, Blanchard, Stanley, Lyman, and Carpenter families. The original settlers were mostly migrants from the Northeastern United States and Northern Europe. The first schoolhouse was built in 1844.
The Chicago, Burlington and Quincy Railroad was extended from Aurora to Chicago through Downers Grove in 1864, boosting its population. The town was incorporated in March 1873. Its somewhat unusual spelling (“Apostrophe-free since 1873”) remains a minor historical mystery.
In April 1947 the wreck of a Burlington Railroad Twin Cities Zephyr passenger train killed three people, including the engineer. The streamliner struck a large tractor which had fallen from a freight train and two passenger cars crashed through a wall of the Main Street Station.
The construction of two major toll roads along the village’s northern and western boundaries, I-355 in 1989 and what is now referred to as I-88 in 1958, facilitated its access to the rest of Chicago metropolitan area. Downers Grove has developed into a bustling Chicago suburb with many diverse businesses, including the headquarters for Devry University, FTD, Ambitech Engineering Corp, Dover, Heartland Food Corporation, and HAVI Global Solutions.
Downers Grove is located at 41°47'41?N 88°01'01?W? / ?41.7948036°N 88.0169400°W? / 41.7948036; -88.0169400.
Recent Jobs and Reviews in Downers Grove, IL
Rated 4.8 out of 5 stars based on 10 customer reviews
Downers Grove, IL at a glance
TDH Mechanical, Inc. has completed 26 jobs in Downers Grove, IL between February 2023 and June 2025.
The 10 customer reviews shown here average 4.8 out of 5.
The most recent job was on June 23, 2025.
TDH Mechanical, Inc. completed its first job in Downers Grove, IL in February 2023.
Reviews
No surprises
TDH did what they said they would do for the price they said they would do it and the equipment and installation is top notch. The TDH quote for all new heating and cooling equipment and installation was my 2nd quote and it was way way better than my first quote. Very good people; friendly and respectful. I have already started recommending TDH to my neighbors in my condo building.
Michael
- Downers Grove, IL 60515
Fast, Easy, Friendly and Professional
Ken did a great job and was very friendly and professional. He answered all of our questions and was very knowledgeable! Thanks so much!
Joe
- Downers Grove, IL 60515
Excellent ServiceChris
- Downers Grove, IL 60515
Excellent Price and Service!
Had to shop a new central air unit with A-Coil/line set and had TDH recommended from Angi and after speaking with Tim, seeing all of their positive reviews and then a price way less then my local service partner of 15 years was an easy decision and project is in and looks great...thank you Tim/Mark/Emily, REALLY glad I found you!
Kevin Conner
- Downers Grove, IL 60516
AC maintenance George
- Downers Grove, IL 60516
The old A/C given a little more time
Our tech arrived promptly and diagnosed the problem quickly. Fixed our AC on a super hot day with understanding that we wanted to do this repair on a budget. Very good at explaining the situation.
Suzy
- Downers Grove, IL 60515
Excellent Service
I am very please with TDH Mechanical. The installation was well done and professional. Great job by Alfredo and his crew.
Bill
- Downers Grove, IL 60515
Good serviceRich
- Downers Grove, IL 60516
Great
Rolando was great! Fast, professional and efficient. Thank you!
Taylor
- Downers Grove, IL 60516
Quick diagnosis and solid repair Ray
- Downers Grove, IL 60516
Job Locations
Wally W.
Tdh provide and install new Goodman ac unit and air handler with new support box, drain pan and safety switch.
Downers Grove, IL 60515
Wally W.
Tdh tuneup one ac unit Trane.
Downers Grove, IL 60515
Wally W.
Tdh install new carrier equipment air handler with 10kW electric heater and 2 ton ac unit 14seer.
Downers Grove, IL 60515
Kris S.
Service
Downers Grove, IL 60515
Wally W.
Tdh install new Carrier furnace ac coil, Aprilaire media filter and humidifier
