About Us | Guardian Heating & Cooling Service

Guardian Heating & Cooling Service

Has been proudly serving up comfort all across Chicagoland since 1953. Our family oriented business is large enough to service all makes and models of equipment, yet small enough to care. Your comfort is always our #1 priority.

We always strive to offer a large array of comfort solutions, not just a quote. Rarely is there only one way to achieve the perfect level of comfort. We firmly believe in educating homeowners and allowing them to make an informed decision. Our high standard of professionalism will give you peace of mind as you make all your informed decisions. Guardian’s technicians always have your best interest at the heart of everything they do.

At Guardian, we believe in doing our work the right way and stand behind our work and products.

Our unmatched warranties, guarantees, and maintenance program give you the assurance that Guardian Heating & Cooling Service is here for you today and well into the future.

Our team of technicians continue to strive for excellence in the field. Constant continuing education classes allow our techs to stay ahead of the curve as technology advances. Whether you need new equipment, repairs, or maintenance, you can rely on our highly-trained dependable team to get the job done.

Service Area

Lincoln Park, IL
Park Ridge, IL
Wilmette, IL
Winnetka, IL
Skokie, IL
Niles, IL
Evanston, IL
Morton Grove, IL

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Paula Hagerty

16:19 23 Jun 23

My air conditioner was not cooling properly so I contacted Guardian and they were out in 2 days to repair my air conditioner. My technician, Nelson, inspected my A/C unit, diagnosed the issue and made the repair quickly. He explained everything thoroughly and answered all of my questions. I highly recommend Guardian for your A/C and heating needs.

Charlie Evans

16:35 03 Jun 23

Jasper Pitrello was extremely professional, patient, and helpful for us with the installation of a new mini split AC system. He even took time to diagnose the issue with our current system and estimate repair. He gave us a very positive, low pressure experience that we appreciated very much. This is our second experience with Guardian and we've been very impressed and would recommend them and Jasper to anyone.

james georgeff

19:47 25 May 23

We used Guardian to come and take a look at our system after we had a slight leak from the vent in our bathroom.Nelson came much earlier than expected (which was great), and was diligent and through with his assessment of our unit. He carefully explained the issues and how we should approach fixing and monitoring our system and I felt confident about our situation after he left.I would certainly use Guardian again and wouldn’t hesitate recommending them to a friend.

Josie Sullivan

21:40 17 Mar 23

We are very pleased with Sergio's great customer service, knowledgeable, and professional service he provided while fixing our heating furnace issue. He explained what the problem was and what our options were. He went out of his way to thoroughly checked his work before leaving to make sure that our furnace issue was resolved. We will definitely ask for Sergio again should we have any more problems in the future. Nowadays, its hard to find an honest person that cares about his work and his customer. Thank you Sergio and Guardian.

James Reedy

20:19 14 Mar 23

Guardian came the same day I called to set up a repair appointment. Nelson, accompanied by apprentice JR, was professional and courteous. He explained the problem and the cause of the short cycling of my furnace, then discussed other services he thought I should be aware of, such as correcting the faulty installation of my hot water heater by a previous contractor. He also encouraged me to have Guardian do an annual inspection of by heating/cool systems. I was pleased with the service and the cost------just by basic service call price of $89!

Amy Khare

22:41 22 Nov 22

I have been a very happy customer of Guardian for years, after having difficult service with larger companies where the technicians circle in and out. What I appreciate the most from the Guardian team is how much they genuinely care about ensuring that we feel safe and secure in our home, as well as educated about our systems so we can ensure preventative maintenance. Today, I had an emergency with a gas leak. Within hours, Nelson was at our home, diagnosing the problem and ensuring resolution. He made sure that the system was running properly rather than just doing a quick fix and running out the door. He helped me feel reassured with the resolution. Megan, who works in the front office, has been a reliable support over the years to help ensure proactive scheduling and that my administrative records are kept and shared via email. This company knows customer service like its a pleasure for them!

Diana Villafuerte

04:37 19 Nov 22

I have the protection plan for my boiler and part of that is an annual regular preventive maintenance service check. Fortunately, a staff member, Meghan, contacted me to renew my plan subscription and schedule an appointment. Service technician Nelson, along with trainee Ray, were assigned to my home. They both were professional and courteous. The PM check was thorough and efficient. They answered my questions and confirmed my system was working properly. I appreciate their professionalism and work ethic. I would request either of them for future service calls to my home. Overall, I'm pleased with Guardian Heating and would recommend their service.