Heater Installation, Furnace Service, Air Conditioner Service, AC Service & Furnace Repair in Wilmette, 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 Chicago, Northbrook, Lincoln Park, Skokie, Glenview, Highland Park, Wilmette, Niles, Morton Grove, Glencoe, and Winnetka, IL because we’re the best at what we do.

Furnace Repair in Wilmette, IL | Heating Service


AC Installation
AC Repair
AC Service
Emergency AC Repair
Central AC Service
Central AC Installation
Central AC Repair
Heating Installation
Heating Service
Heating Repair

Serving Chicago, IL and surrounding areas

Serving Northbrook, IL and surrounding areas

Heating ServiceAC RepairFurnace ServiceAC ServiceAir Conditioner Service ∴ Wilmette, 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
  • $500 of Air Conditioner Installations

    Not valid with any other offers. May not apply to equipment located in crawl spaces or attics. Cannot be combined with any other offers. Must present coupon at time of service. Not valid on prior purchases.

    Expires: 07/31/2025

  • 30% Off any Repair with the Purchase of a Maintenance Agreement.

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

    Expires: 07/31/2025

  • $35 Off Service Repair

    Not valid with any other offers. With this coupon. Not valid on prior purchases. Not valid on Diagnostic without repair. Coupon Must be presented at time of service.

    Expires: 07/31/2025

  • $149.00 Tune Up and Cleaning

    Not valid with any other offers. May not apply to equipment located in crawl spaces or attics. 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. Price per unit. Excludes boilers. With this coupon. Not valid on prior purchases.

    Expires: 07/31/2025

What our clients are saying

Installing the best and servicing the rest!