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(773) 763-9224

A Tradition of Excellence for over 67 years in Chicago and surrounding areas!

We, at Guardian Heating and Cooling Service, have made it our mission to serve you with the highest quality customer service and Carrier products.

Call today to schedule a service call or to request a free estimate on new equipment.

(773) 763-9224

$89 Clean & Check – See Details

Up to $2,650 in Rebates – See Details

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Boiler Replacement in Niles, IL | HVAC Service Wilmette, IL

Family owned and operated, Guardian Heating & Cooling Service specializes in residential and commercial HVAC services in Chicago, IL and surrounding areas, providing customized solutions to everyday challenges. We are large enough to handle your needs, and small enough to care. Contact us at (773) 763-9224, speak with a knowledgeable and friendly representative of our staff, and let us help you improve the comfort, health, and control over your indoor environment. Through industry-leading equipment and skilled workmanship, we deliver results you can trust.

Guardian Heating & Cooling Service, Inc. BBB Business Review

Expert Heating & Cooling Services & Repairs

Guardian Heating & Cooling Service offers a wide range of opportunities to enhance energy efficiency and maximize heating/cooling system reliability. Whether you’re considering new installation, retrofit, maintenance, or repair of anything from radiant floor heating to a furnace, boiler, heat pump, central cooling, snowmelt system, and much, much more, our factory trained and certified technicians are up to the task.

Furnace Repair, AC Repair, AC Service, HVAC Service & Boiler RepairWilmette, IL, Chicago, IL, Morton Grove, IL, Park Ridge, IL, Lincoln Park, IL & Evanston, IL

Trust in our team for all your HVAC repairs, maintenance & installations in Chicago, IL and surrounding areas!

We show up right on time, take pride in a job well done, and have developed the best maintenance plan on the market. For exceptional residential and commercial HVAC services, Guardian Heating & Cooling Service is the right choice for unmatched value throughout Lincoln Park, Skokie, Chicago, Niles, Evanston, Wilmette, Park Ridge, and Morton Grove, IL.

Boiler Installation ∴ Boiler Replacement

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
  • Respicare Oxy-4

    $100.00 Off*

    (773) 763-9224

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

    Expires: 12/31/2020

  • 30% Off Any Service Call and Repair

    For 1st-time customers*

    (773) 763-9224

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

    Expires: 12/31/2020

  • Free 2nd Opinion

    On Condemned Equipment

    (773) 763-9224

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

  • Preventative Maintenance Clean & Check

    Regular: $129.00 | Special: $89.95*

    (773) 763-9224

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

    Expires: 12/31/2020

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.


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Boiler Installation

Boiler Replacement

Wilmette, IL

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