A Tradition of Excellence for over 71 years in Chicago and surrounding areas!

Call today to schedule a service call or to request a free estimate on new equipment. Open Monday-Friday.

Save Over $10,000 $129 Tune-UP Maintenance Special Financing Available

Heating

Air Conditioning

Financing

Maintenance

Catch Me in Pink™ is officially here! This campaign, in coordination with the Vera Bradley Foundation for Breast Cancer Research, helps raise money for the research of rare breast cancers. Click the button below to learn more about how you can participate.
Catch Me in Pink™

HVAC Company Chicago, IL | Air Conditioner Service Northbrook, IL | AC Contractor Lincoln Park, IL

Family owned and operated, Guardian Heating & Cooling Service specializes in residential and commercial HVAC services in Chicago, IL and surrounding areas, providing customized solutions to everyday challenges. We are large enough to handle your needs, and small enough to care. Contact us at 312-818-2840, speak with a knowledgeable and friendly representative of our staff, and let us help you improve the comfort, health, and control over your indoor environment. Through industry-leading equipment and skilled workmanship, we deliver results you can trust.

We have now opened a new office in Northbrook so we can better serve our Northshore customers.

Expert Heating & Cooling Services & Repairs

Guardian Heating & Cooling Service offers a wide range of opportunities to enhance energy efficiency and maximize heating/cooling system reliability. Whether you’re considering new installation, retrofit, maintenance, or repair of anything from radiant floor heating to a furnace, boiler, heat pump, central cooling, snowmelt system, and much, much more, our factory trained and certified technicians are up to the task.

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

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

We show up right on time, take pride in a job well done, and have developed the best maintenance plan on the market. For exceptional residential and commercial HVAC services, Guardian Heating & Cooling Service is the right choice for unmatched value throughout Chicago, Northbrook, Lincoln Park, Skokie, Glenview, Highland Park, Wilmette, Niles, Morton Grove, Glencoe, and Winnetka, IL. Contact us today for your local HVAC experts today!

AC Company ∴ HVAC Contractor ∴ AC Contractor ∴ HVAC Company ∴ Skokie, IL ∴ Glencoe, IL ∴ Northbrook, IL

Penny Shultz

Martin and Brian did a great job installing our new IBC high efficiency boiler..!

Sarah Matz

Great service as always! Sergio went the extra mile to provide same day part replacement.

Margaret Cleary

We have used Guardian for many years. They installed a new boiler in our old Victorian a few years ago and do yearly health check on it. Always prompt and courteous. Highly recommend.

Justin Lorieau

Guardian Heating & Cooling Service did an excellent job installing our heat pump and furnace. The installation was done by Jose and Raymundo, and they were thorough in installing important components that other major installers will skip to save time, like surge protectors, draining lines for the in-take pipe and leak detectors. They were very friendly and answered all questions. Our sale was done by Jonathan, and he was very friendly too and prompt in replying to all questions. I had questions on the efficiency of the units, and he was diligent in finding all answers and making sure I was satisfied. Through this process and receiving quotes and estimates from the many companies in Chicago, I've learned that all top-reviewed companies are not the same. Guardian was far and away the most knowledgeable and thorough in doing a complete and quality installation. I'm confident my furnace and heat pump will last a long time (with routine care).

John Woodruff

Anthony, the service technician, came out, did an excellent job diagnosing why I was getting an extreme build up of condensation. He actually found out it wasn’t the furnace at all and was able to direct me to the appropriate source of the problem. My experience with Guardian is routinely cost and time efficient. Great job!

Cecilia Camarena

Well, I initially called about my AC unit that died. It was repaired and cleaned by Peter. I now realize why the cleaning of my AC unit was so inexpensive. Peter had that unit look close to brand new. At this time I found out the unit was 22 years old and the furnace was not far behind. I thought that due to the age of units I should pursue quotes on replacements. I met with Jonathan who provided me with proposals. I met the owner who added on some additional components that he thought would benefit my home. The end quote I thought was fair and reasonable. The new units were installed the following week. The crew that installed the equipment were extremely professional. I could tell they took great pride in their work. Their work was immaculate. I have seen installations of other type of equipment. Primarily in the world of telecommunications and I have never seen a cleaner installation. You all should be proud. If you couldn't tell, I highly recommend Guardian.

Ashley Walter

These guys are fantastic! The comfort specialist explained all my options and even let me know my A/C didn’t actually need to be replaced, something a competitor neglected to mention. The installation tech was a true expert who answered all of my questions and really went above and beyond to make sure everything was working right before he left, even though my old building had a couple of surprises for him. It was horribly hot and I am so grateful to have my HVAC system working! Now I know who to go to for quality repairs. What a relief as a new homeowner!

HVAC Company Chicago, IL | Air Conditioner Service Northbrook, IL | AC Contractor Lincoln Park, IL

Expert Heating & Cooling Services & Repairs

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

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

AC Company ∴ HVAC Contractor ∴ AC Contractor ∴ HVAC Company ∴ Skokie, IL ∴ Glencoe, IL ∴ Northbrook, IL

HVAC Contractor

HVAC Company

AC Contractor

AC Company

River Forest, IL

Elmwood Park, IL

Northfield, IL

Melrose Park, IL

Oak Park, IL

Lincolnwood, IL

Highwood, IL

Harwood Heights, IL

Kenilworth, IL