Air Conditioning Repair, Heating Repair & Heating Installation in Chicago, IL

For 66 years, Guardian Heating & Cooling Service has brought an unmatched level of excellence to residential and commercial service. We build trust and lifetime partnerships with home and business owners in Chicago, IL through honesty, integrity, and affordable solutions. You’ve certainly seen our service vehicles in our neighborhood. Our expert team handles your every need from new HVAC installation and equipment upgrades to repair and maintenance of all brands, models, and styles.

Expert Heating & Cooling Services in Chicago, IL

Whether your priorities are comfort, energy efficiency, air quality, simplified control over the indoor environment, or all of the above, Guardian Heating & Cooling Service delivers. As a Carrier Factory Authorized Dealer, our technicians meet exacting levels of training and draw from the industry’s leading technological innovations. We complete all services swiftly, with attention to detail and without needless disruption. Our goal is peak and sustainable system operation. Guardian Heating & Cooling Service is a family owned and oriented business, dedicated to customer satisfaction. Large enough to handle your needs, small enough to care.

Serving Chicago, IL and surrounding areas

Air Conditioning RepairHeating RepairAC Repair

Save today with our special offers

You love getting good deals, so here are some coupons to show our appreciation for considering us for your next heating or cooling installation or repair.

Special Offers
  • Respic Care $399 Special

    On the Micro-Clean 95 1” Electronic Air Cleaner (Reg $529.00 value)


    Cannot be combined with any other offers or discounts.

    Expires: 12/31/2019

  • 0% Financing*

    On Tankless Water Heaters


    *For Qualified Customers. Cannot be combined with any other offers or discounts.

    Expires: 12/31/2019

  • Free Portable Car Air Scrubber

    With the purchase of a Whole House Air Scrubber (Reg $299.00 value)


    Cannot be combined with any other offers or discounts.

    Expires: 12/31/2019

  • 0% Financing*

    On IAQ (Indoor Air Quality) Products


    *For Qualified Customers. Cannot be combined with any other offers or discounts.

    Expires: 12/31/2019

What our clients are saying

Mo W.

Guardian is a top notch company and John is one of the most outstanding technicians I’ve ever worked with. He’s a trustworthy contractor who explains potential issues as he finds them, and breaks down the process of replacement so that anyone can understand it. I own 12 HVAC systems and I’ve seen more than my share of maintenance. I’ve used Guardian for years and these guys are simply the best.

Keith B.

Have used Guardian for years. Recently had a new furnace and central air installed and I couldn’t be happier. I really trust them because the workers are always extremely knowledgeable, good problem solvers, and they explain everything in terms I can understand. The guys are always very nice, and respectful, also. Highly recommend Guardian Heating & Cooling.

Laurie E.

Just had another great maintenance visit to prepare my old A/C units (2) for the summer. John was thorough and informative. Great job.

I have used Guardian Heating for over 15 years. And my original Rheem furnaces(zoned heat) are still running! I use their maintenance contracts to get reminders, advance scheduling and discounts on annual furnace and A/C checkups/cleaning. They are always quick to respond to a service request. I highly recommend them.

Installing the best and servicing the rest!