HVAC Service, AC Service & Air Conditioner RepairWilmette, IL, Park Ridge, IL, Niles, IL, Wilmette, IL, Morton Grove, IL & Skokie, IL

Guardian Heating & Cooling Service is your trusted HVAC provider in Wilmette, IL. Established in 1953, we understand the challenges of local weather extremes. We’ve customized our services to handle everything from sub-zero temperatures to high humidity. Our focus is on energy efficiency, reliability, comfort, and air quality. We strive to simplify system management, trim costs and deliver longevity from our efforts.

Dependable HVAC Repairs in Wilmette, IL

When you contact Guardian Heating & Cooling Service, you access a highly trained team of NATE-certified techs. As a Carrier Factory Authorized Dealer, we’ve been recognized as a 2021 Presidents Award winner and Comfort 24-7 Provider. Being choosy about the manufacturers we install, we offer a selection of unmatched innovations from Aprilaire, Honeywell, AeroSeal, Unico, and Carrier. There is no requirement we can’t fulfill to exceptional standards.

Give us a call for your heating & A/C services in Chicago, IL and surrounding areas!

Don’t hesitate to ask us about our multiple financing options. Get further information about our shield of Protection Maintenance Plan (SPP) with no signup fee and enjoy priority scheduling and a 30% discount on equipment repairs. Let us resolve concerns with any make or model of residential or commercial HVAC system and maximize performance. You’ve noticed our fleet of trucks throughout Lincoln Park, Skokie, Chicago, Niles, Evanston, Wilmette, Park Ridge, and Morton Grove, IL because we’re the best at what we do.

Boiler Service in Wilmette, IL | Air Conditioner Repair Evanston, IL | AC Service Skokie, IL

Serving Chicago, IL and surrounding areas

AC RepairBoiler ServiceAir Conditioning MaintenanceAC ServiceAC Installation ∴ Evanston, IL ∴ Skokie, IL ∴ Park Ridge, 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
  • Mini-Split(Ductless) Installation

    $250.00 Off*


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

    Expires: 09/30/2021

  • Respicare Oxy-4 Air Purifier

    $100.00 Off*


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

    Expires: 09/30/2021

  • Free 2nd Opinion


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

  • $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.

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!