Guardian Heating & Cooling Service

Has been proudly serving up comfort all across Chicagoland since 1953. Our family oriented business is large enough to service all makes and models of equipment, yet small enough to care. Your comfort is always our #1 priority.

We always strive to offer a large array of comfort solutions, not just a quote. Rarely is there only one way to achieve the perfect level of comfort. We firmly believe in educating homeowners and allowing them to make an informed decision. Our high standard of professionalism will give you peace of mind as you make all your informed decisions. Guardian’s technicians always have your best interest at the heart of everything they do.

At Guardian, we believe in doing our work the right way and stand behind our work and products.

Our unmatched warranties, guarantees, and maintenance program give you the assurance that Guardian Heating & Cooling Service is here for you today and well into the future.

Our team of technicians continue to strive for excellence in the field. Constant continuing education classes allow our techs to stay ahead of the curve as technology advances. Whether you need new equipment, repairs, or maintenance, you can rely on our highly-trained dependable team to get the job done.

Serving Chicago, IL and surrounding areas

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
  • Matching Infinity System (Furnace, A/C, Stat)

    $500.00 Off*


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

    Expires: 10/31/2021

  • $89 Clean and Check


    *Scheduling restrictions may apply. Limited spaces available. Ground-level residential equipment. Cannot be combined with any other offers. Must present coupon at time of service.

  • Mini-Split(Ductless) Installation

    $250.00 Off*


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

    Expires: 10/31/2021

  • 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 9/6/2021 through 11/19/2021.

    Expires: 11/19/2021

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!