Heating Service, AC Installation, Air Conditioning Service, AC Repair & HVAC RepairChicago, IL, Northbrook, IL, Lincoln Park, IL, Skokie, IL, Glenview, IL & Highland Park, IL

HVAC Repair in Chicago, IL | Air Conditioning Service Northbrook, IL | Heating Service Lincoln Park, IL


Guardian Heating & Cooling Service has been a staple of HVAC services across Chicago and the surrounding areas for 72 years. We know how to help you reduce winter utility bills. It all starts with the heating system. Modern options are simply more energy efficient than older models. If you’re dreading the cost of keeping a comfortable home, you might want to consider an update. As a Carrier Factory Authorized Dealer, we specialize in industry-leading technology to elevate comfort while minimizing expenses.

Are you taking good care of your heating system? Without regular, professional maintenance, performance steadily diminishes. Restricted airflow due to a buildup of contaminants will lead to longer run times, greater energy consumption and higher monthly costs. Minor issues left unresolved quickly turn into more expensive repairs. Guardian Heating & Cooling Service offers proactive services to achieve superior efficiency, reliability and longevity.

When Should I Change My Filter?

Filter changes are extremely important. The filter helps to protect the system from dust and other debris that builds up on equipment, hindering performance and reducing efficiency. You can also lessen demands on the heating system by tightening up the house. Make sure windows and exterior doors are securely closed and sealed tight. Check for cracks and crevices where heated air can leak out and drafts come in. Insulation, caulking and weatherstripping quickly pay for themselves!
Make an effort to lower the thermostat setting when you’re away from home or heading to bed for the night. Even small adjustments make a big difference. If you’re struggling to remember or reluctant to return home to chilly conditions, take a look at the convenience of a smart thermostat. Intuitive controls automatically adjust to your schedule, taking advantage of energy saving opportunities and providing maintenance alerts!

Air Conditioning ServiceAC InstallationAC RepairHeating ServiceHVAC Repair ∴ Glenview, IL ∴ Highland Park, IL ∴ Glencoe, IL

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Serving Chicago, IL and surrounding areas

Serving Northbrook, IL and surrounding areas

AC RepairAC InstallationAir Conditioning ServiceHeating ServiceHVAC Repair ∴ Winnetka, IL ∴ Northbrook, IL ∴ Lincoln Park, 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
  • Limited Time Air Conditioner System Savings – Up to $1,700 off complete system

    *Restrictions apply. Cannot be combined with any other offers. Must present coupon at time of service. Not valid on prior purchase. See dealer for details and complete system requirements.

    Expires: 06/27/2025

  • 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: 06/15/2025

  • $500 OFF Air Conditioner

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

    Expires: 06/15/2025

  • No-Interest Financing

    For up to 72 months with Approved Credit.
    With Approved Credit. On Qualifying Systems only. Call Amber for details.

    Expires: 12/31/2025

What our clients are saying

Installing the best and servicing the rest!