Air Filter, UV Light & Indoor Air QualityEvanston, IL, Lincoln Park, IL, Skokie, IL, Wilmette, IL, Chicago, IL & Park Ridge, IL

Let’s improve the health, enjoyment, and overall integrity of your home. Through personalized strategies, Guardian Heating & Cooling Service optimizes indoor air quality in Chicago, IL and surrounding areas. Doesn’t matter if you’re dealing with a specific complaint, unsure of the nature of the problem, or simply taking proactive measures. Our team of factory trained and NATE-certified professionals provide accurate assessment and a straightforward course of action. We target the whole home through an array of industry-leading equipment certain to exceed expectations.

Improve your home air quality with our featured services

From air filtration to purification, we help you determine the ideal course of action and implement efficient, effective, and sustainable solutions.

Air Filtration or Air Purification

The bacterial-killing properties of Respicare Mold Miser and Carrier UV germicidal lights promotes healthier living and superior HVAC operating efficiency.

UV Lights

Providing for the requirements of every room, these systems operate almost silently, require little maintenance, and significantly improve the health, comfort, and efficiency of your home.


The Aprilaire whole house dehumidification system caters to your size of home and style of HVAC system, delivering quiet, low-maintenance, and sustainable improvement.


We provide professional duct system assessment, repair, and maintenance. We recognize the importance of ductwork operating at peak capacity.


Taking advantage of cutting-edge technology, we access the entirety of the duct network without causing damage, mess, or upheaval. According to the US Department of Energy, Aeroseal is one of the most rewarding energy technologies for American consumers.

Duct cleaning

We fix imperfections in the ductwork from the inside out, effectively reaching the entirety of the system without disruption to the home.


Expert Indoor Air Quality Solutions

Guardian Heating & Cooling Service partners with the pioneers in air quality, including Aprilaire, Carrier, and Honeywell, to ensure the right fit and a sustainable solution to any problem. From too much or too little humidity to unpleasant odors, airborne contaminants, mold growth, and more, we accommodate your HVAC equipment, size/style of home, and goals for improvement. Cutting-edge technology operates virtually silently and requires nothing more than annual maintenance.

Call on our team for indoor air quality services you can trust in Lincoln Park, Skokie, Chicago, Niles, Evanston, Wilmette, Park Ridge, and Morton Grove, IL!

Guardian Heating & Cooling Service is large enough to handle your needs and small enough to care. Our goal is not to talk you into something you don’t need. Family owned and operated, we take indoor air quality very seriously. We recognize the impact on your family’s health, comfort, sleep, and productivity, as well as the risk of damage to home furnishing and wear and tear on HVAC equipment. Contact us at (773) 231-9175 for honest recommendations, fair pricing, and trustworthy indoor air quality services across Lincoln Park, Skokie, Chicago, Niles, Evanston, Wilmette, Park Ridge, and Morton Grove, IL.

Air Purifier in Wilmette, IL | UV Light Morton Grove, IL | Air Filter Chicago, IL

Serving Chicago, IL and surrounding areas

Air FilterAir PurifierIndoor Air QualityUV Light ∴ Lincoln Park, IL ∴ Niles, IL ∴ Evanston, 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
  • $99 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.

  • Free 2nd Opinion


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

  • Respicare Oxy-4 Air Purifier

    $100.00 Off*


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

    Expires: 01/31/2022

  • Matching Infinity System (Furnace, A/C, Stat)

    $500.00 Off*


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

    Expires: 01/31/2022

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!