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Featured Jobs

Boiler Replacement

This was a small commercial job for a nursing home in Chicago. We removed 2 boilers that were over 50 years old, inefficient and obsolete. We replaced them with 2 modulating condensing high efficiency IBC boilers. Their ROI should pay for the job in 2 to 3 years.

Serving Chicago, IL and surrounding areas

Serving Northbrook, IL and surrounding areas

Shield of Protection Maintenance Plan

30% Off Equipment Repairs
Priority Service

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Financing Options

Finance your service, repair or installation costs, subject to approved credit.

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We offer convenient financing with an easy application process in a multitude of options! Get special financing for 12 months, 36 months, 60 months...even 132 months available with approved credit. Call us NOW for details.

HVAC Repair ∴ Air Conditioning Service ∴ AC Installation ∴ Heating Service ∴ AC Repair ∴ Niles, IL ∴ Winnetka, IL ∴ Chicago, IL

Guardian Heating & Cooling Service, Inc. BBB Business Review

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

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