Furnace Repair, AC Service, Air Conditioner Service, Heating Service & Air Conditioning Installation in Niles, IL

Welcome to Guardian Heating & Cooling Service, where excellence is a certainty. Our NATE-certified technicians turn challenges into positives. We combine extensive training, experience, and determination to maximize every improvement opportunity. Through our efforts, you enjoy superior HVAC system efficiency, lower monthly costs, and enhanced air quality and comfort. Whether for residential or commercial services, we are your heating, cooling, and IAQ experts in Niles, IL.

Trustworthy Heating & A/C Services

Over our 71 years of service, we at Guardian Heating & Cooling Service have seen the benefits of preventative service. We use our experience and expertise to provide the greatest value. The result is our Shield of Protection Maintenance Plan (SPP) which has proven to boost equipment efficiency by as much as 25%. Priority scheduling, 30% discount on repairs, greater reliability, and longer system life are just a few of the perks.

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

Guardian Heating & Cooling Service is a Comfort 24-7 Provider and Carrier Factory Authorized Dealer. Drawing from such well-known manufacturers as Aprilaire, Honeywell, Carrier, AeroSeal & Unico, we cater to residential or commercial needs with the most sophisticated technology on the market. Contact Guardian Heating & Cooling Service at 312-818-2840 for new system installation, upgrades, upkeep, repairs, and convenient financing anywhere across Chicago, Northbrook, Lincoln Park, Skokie, Glenview, Highland Park, Wilmette, Niles, Morton Grove, Glencoe, and Winnetka, IL.

AC Company in Niles, IL | Air Conditioner Service

Service In Niles, IL

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

Serving Chicago, IL and surrounding areas

Serving Northbrook, IL and surrounding areas

AC CompanyHVAC CompanyHVAC ContractorFurnace Company ∴ Niles, 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
  • Financing Special 0% financing for up to 60 months

    With Approved Credit. On Qualifying Systems only. Call Amber for details. Expires 12-31-24.

  • 30% off

    30% Off any repair with the purchase of a maintenance agreement.*

    773-763-9224


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

    Expires: 12/31/2024

  • Free 2nd Opinion

    773-763-9224


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

  • Save Thousands w/ Local & Federal Rebates

    Learn More


    *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

Installing the best and servicing the rest!