To Our Customers: We are staying open as we are classified as essential services. Contactless service calls available. We will be here when you need us!

HVAC Maintenance, Furnace Installation & Heating Repair in Chicago, IL

For 68 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

HVAC MaintenanceHeating InstallationHeating RepairAir Conditioning RepairFurnace Installation ∴ Chicago, IL

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
  • Preventative Maintenance Clean & Check

    Regular: $129.00 | Special: $89.95*


    *Ground level units only. Coupon must be mentioned at the time of scheduling and cannot be combined with any other offers. Residential equipment only.

    Expires: 05/31/2021

  • Free 2nd Opinion


    *Cannot be combined with any other offers. Must present coupon at time of service.

  • Carrier Cool Cash is back!

    Carrier Cool Cash

    Up to $1,650 in rebates on qualifying equipment

    Please contact Guardian Heating & Cooling Service at 773-763-9224 for more information. Cannot be combined with any other offer. Offer valid 4/12/2021 through 6/30/2021.

    Expires: 06/30/2021

  • 30% Off Any Service Call and Repair

    For 1st-time customers*


    *Cannot be combined with any other offers. Must present coupon at time of service.

    Expires: 05/31/2021

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!