At Kats, we always put people before sales. We make suggestions that are good for your comfort, not our wallet.
We love sinking our claws into our customers' HVAC problems. With over 30 years of combined experience in the Western Chicagoland, we know what we're doing.
Expert Furnace and AC Service in Downers Grove and Hinsdale
We’ll Beat All Quotes!
Furnace and Air Conditioning Repairs
Maintenance for Furnace and Air Conditioning
New Sales and Installations
Why Customers in Western Chicagoland Pounce on Kats Services
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No Unnecessary
Sales -
We Offer
Emergency ServiceWe never want to leave our customers struggling in miserable cold or heat. That’s why we offer 24/7 emergency HVAC service in Downers Grove.
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Work Done
RightYou won’t find any cut corners with Kats. We take the time to do the job with care and attention to detail.
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We Have Everything
CoveredOur Downers Grove HVAC technicians don’t just know what they’re doing. They’re also licensed, bonded, and insured.
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Enhanced
ExperienceWe have 12 years of experience, plus the latest and greatest tools and testing equipment for every job in Hinsdale or La Grange.
5.0
★★★★★
950+ Reviews
HVAC Services Done Right for Our Downers Grove Customers
Our Services
Learn more about the HVAC services we offer. Our goal is to keep your heating and AC units running as efficiently as possible. As a result, your HVAC units will keep your home or office as comfortable as can be!
Need Help with Your Furnace or Boiler in Downers Grove? Contact Us Today!
Our Reviews in Western Chicagoland
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Great Teamwork on AC Installation5/5 Stars – Absolute Legends at AC Installation!
These two techs are absolute heroes! They installed our AC in brutal, fry-an-egg-on-the-sidewalk heat, tackling a tricky coil setup and sheet metal work as pros. Their teamwork and skill were unreal, leaving us with a perfectly running system. The place was spotless when they finished—cleaner than when they started! Super professional, friendly, and took time to explain everything. These guys should get some well deserved recognition for their top-notch work! Highly recommend!Adam Z. -
A Reasonable Price for MaintenanceEddie and Anthony were great! The charge for a furnace tuneup is very reasonable for their comprehensive tuneup. Eddie found that my burner was rusted and needed to be replaced. I’m grateful that he did an extensive tuneup and found issues that my previous technician did not find. I definitely will recommend Kats to any needing HVAC repairs or maintenance, they provide quality work and knowledgeable technicians.AJ
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Furnace Service in a BlizzardAnthony came out on a Saturday in a blizzard and took his time to figure out why our furnace unit had not been working and not only fixed it but also fixed our other upstairs unit in the process from the original builder's lack of attention to detail. He was very friendly and personable. We will definitely be using Kats again and hopefully Anthony will be the one coming out in the future!!Bronson
Get the best price for
our services with a coupon
Seasonal
Specials
Big Savings
Utility Rebate + Tax Credit
What you get from Kats Heating and Cooling:
- Save up to $2000 with Utility Rebates
- + Save an additional $2000 with tax credits for installation of a NEW heat pump
- 100% satisfaction guaranteed
Not in combination with any other offer.
Keeping Customers Comfortable Across Western Chicagoland
- Berwyn
- Clarendon Hills
- Darien
- Downers Grove
- Elmhurst
- Glen Ellyn
- Hinsdale
- La Grange
- Lisle
- Lombard
- Naperville
- Western Springs
- Westchester
- Westmont
- Wheaton
- Woodridge
Get to Know Downers Grove’s
Best HVAC Company
We are a company both run and owned by family. Kats was founded by Giovanni ‘Gio’ Katsigiannis in 2014. Gio pursued HVAC work as a way to solve mechanical problems and help people at the same time.
Our company was established to give people in Downers Grove an alternative to sloppy HVAC work with upcharges. We take great pride in the quality of our furnace service. We also have flat-rate costs so our customers never have to guess at final pricing.
We aim to redefine the local HVAC experience by becoming the most trusted name in Western Chicagoland. We believe in technical excellence and building lasting customer relationships through exceptional service. That philosophy has led us to success. Today, we have nine service trucks, countless loyal customers, and over 800 five-star Google reviews.
Achieving Purr-fect Comfort with Bryant
After prospering for more than a century, Bryant knows how to make the sturdy, effective HVAC systems customers need. Bryant has also made great progress for sustainability by prioritizing the transition from fuel-burning to electric systems.
As factory authorized dealers, we are honored to work closely with Bryant. We are happy to offer their premium, energy-efficient furnace to our customers in Western Chicagoland.
Need a new HVAC unit?
Call (708) 710-6719 today to learn about the Bryant systems we offer in Western Chicagoland.
Call (708) 710-6719 today to learn about the Bryant systems we offer in Western Chicagoland.
Call Today for HVAC Service in Downers Grove
Turn to Kats for reliable Air Conditioner and furnace service when you need it. See why we’re the most trusted HVAC company in Downers Grove, Hinsdale, and our neighboring cities. For a free in-home estimate, call us today at (708) 710-6719 or fill out the form below.
Frequently Asked Questions
How much does a service call cost in Western Chicagoland?
While we can’t give a precise quote without seeing your HVAC system, our dispatch fee is $120. This dispatch fee is rolled into the cost of your furnace repair or replacement. We also offer flat-rate pricing and free second opinions.
Do you offer same-day HVAC service in Hinsdale and Downers Grove?
Yes, we do. We know that losing heating or AC can be a miserable experience, and our technicians work hard to get to customers quickly. If your furnace is down or you have a struggling boiler, get in touch with us at (708) 710-6719. We’ll do our best to get back to you in 24 hours.
Can I apply for financing?
Yes. You can apply for a Bryant credit card through Wells Fargo. This financing option can allow Downers Grove and Hinsdale customers to pay for expensive and urgent repairs. For questions not answered on our site, call (708) 710-6719.
What types of equipment do you service?
We work on gas, oil, and electric furnaces, boilers, heat pumps, air conditioners, and ductless mini-splits. We also care for commercial HVAC systems throughout Western Chicagoland. While we specialize in Bryant systems, we repair, replace, and maintain all major brands of HVAC units.
What should I expect when I get furnace service?
Customers should expect an effective, pleasant visit from a friendly HVAC technician. We make a point of being timely, efficient, and accurate in our work. If you’re not satisfied with your furnace repair, please reach out to us.