Indoor Air Quality Testing & Indoor Air QualityLincoln Park, IL, Park Ridge, IL, Evanston, IL, Skokie, IL, Wilmette, IL & Chicago, 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 312-818-2840 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.

Indoor Air Quality Testing Chicago, IL & Indoor Air Quality Morton Grove, IL

Request Service Today

Serving Chicago, IL and surrounding areas

Indoor Air Quality TestingIndoor Air Quality ∴ Niles, IL ∴ Wilmette, 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
  • 30% off

    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: 02/29/2024

  • Free 2nd Opinion


    *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.

  • $99 Preventative Maintenance


    *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

Kousuke Sasaki
Kousuke Sasaki
the technician was helpful and friendly. He spoke with both confidence/competence that put me at ease and helped me understand the problem.
Michael Sutton
Michael Sutton
Furnace replacement Not the best price out there, but fair for the quality you'll see in the installation. As for any short falls on the job I would say more time explaining the full scope of the thermostat and programming schedule. Thow easy enough to find/ figure out with the help of YouTube. Will definitely recommend and use their services in the future.
Julianne Keating
Julianne Keating
I have been using them for 19 years purchased a new furnace in 2021 all the employees extremely helpful and knowledgeable
Zeljko Dakic
Zeljko Dakic
I recently had the pleasure of having my furnace installed by Jose and Miguel from Guardian Heating & Cooling Service, and I couldn't be happier with the experience. From start to finish, their professionalism, expertise, and attention to detail were evident. They arrived on time, were extremely courteous, and took the time to explain the installation process and how everything works. The installation was completed efficiently and with minimal disruption to my home. Jose and Miguel went above and beyond to ensure that the area was clean and tidy before they left. They also made sure I was comfortable operating the new system and answered all my questions with patience and clarity. I am thoroughly impressed with the quality of work and the level of service provided by Jose and Miguel. It's clear they take pride in their work and customer satisfaction is their top priority. I would highly recommend Guardian Heating & Cooling Service to anyone in need of heating and cooling services. Their team is truly top-notch!
Michael Chapin
Michael Chapin
Martin & Brian were highly professional! They called ahead, put mats on the floors to maintain a clean home, worked diligently and quietly. They took time to answer all my questions and assist me in me in the basic process of operating my new unit. My new unit is amazing. Great team at Guardian!
Hector Garcia
Hector Garcia
Wow! They did an awesome job, I can barely believe it. The two guys Sergio and Luis did a fantastic job. They knew exactly what to do right away. At first it was the thermostat and then went downstairs in the basement, to check on the furnace and made sure it had no electrical problem. Sergio and Luis opened up the furnace vent remove and cleaned it up. Vacuuming it all the dirt and dust around it. Removed some cables making sure no dirt was clogging it. Finally using there own special tools in equipment one with a camera to look and see inside any mechanical or filter problem. Once he finish gave me his business card and offered me brochure to sign up for a membership. I will definitely take it in consideration. Yes I highly recommend this company! Both guys are very professional and took care of business. Thanks to them and the company Guardian we have heating in our home throughout this entire winter.
Steven Aguilar
Steven Aguilar
Sergio was excellent. Knowledgeable and easy going. I would highly recommend.

Installing the best and servicing the rest!