Heater Installation, Air Conditioner Service, AC Service, Air Conditioning Installation & Furnace Repair in Wilmette, IL

Guardian Heating & Cooling Service is your trusted HVAC provider in Wilmette, IL. Established in 1953, we understand the challenges of local weather extremes. We’ve customized our services to handle everything from sub-zero temperatures to high humidity. Our focus is on energy efficiency, reliability, comfort, and air quality. We strive to simplify system management, trim costs and deliver longevity from our efforts.

Dependable HVAC Repairs in Wilmette, IL

When you contact Guardian Heating & Cooling Service, you access a highly trained team of NATE-certified techs. As a Carrier Factory Authorized Dealer, we’ve been recognized as a 2021 Presidents Award winner and Comfort 24-7 Provider. Being choosy about the manufacturers we install, we offer a selection of unmatched innovations from Aprilaire, Honeywell, AeroSeal, Unico, and Carrier. There is no requirement we can’t fulfill to exceptional standards.

Give us a call for your heating & A/C services in Chicago, IL and surrounding areas!

Don’t hesitate to ask us about our multiple financing options. Get further information about our shield of Protection Maintenance Plan (SPP) with no signup fee and enjoy priority scheduling and a 30% discount on equipment repairs. Let us resolve concerns with any make or model of residential or commercial HVAC system and maximize performance. You’ve noticed our fleet of trucks throughout Lincoln Park, Skokie, Chicago, Niles, Evanston, Wilmette, Park Ridge, and Morton Grove, IL because we’re the best at what we do.

AC Service in Wilmette, IL | Heating Service

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AC Repair ∴ Air Conditioner Service ∴ Air Conditioning Installation ∴ AC Service ∴ Heating Service ∴ Wilmette, IL

Marcy Dotson

Guardian heating and cooling is a great company. They have serviced us for over a year and we continue to get good service every time. keep up the good work.

Josephine Osowski

Martin & Brian did an excellent job installing my new furnace & water heater. They arrived on schedule & kept me informed during the process. The entire area was cleaned and all trash removed before they left.

James Spillane

Great and expert service as always from Guardian. David was wonderful. Brian and Martin who did the installation were amazing, did a great job, did it with care and courtesy, and ensured everything worked before they left. Outstanding!

Robert H

Great place and Sergio Morales solved the issue. Plus is professional and helpful. New issue Sergio Morales was is extremely helpful sharp and proficient.

Elizabeth Pollock

I have used Guardian Heating and Cooling for regular maintenance and any major and minor heating and cooling issues at my home. The company representatives are consistently professional, responsive, and efficient.

John Mueller

I had to replace my old forced air gas furnace. Guardian's project manager Dave was great, he listened to my concerns and helped pick a new furnace with heat exchanger and air conditioning system. Miguel and Brian did a great job of installing the new system, hard working and conscientious. I can't say enough, thanks to everyone who helped!

Daniel Kim

This review is almost 2 years late! But I figure better late than never, and I have 2 years of data to back my review. We have radiant floor heating and were warned when we bought our house that it could be challenging to find people who know how to work with it. They were right, as we discovered when our obsolete hybrid boiler/tank needed replacing. One company ghosted me. When I called Guardian, Alen and Peter came and looked at our heating system. They identified what they thought needed to be done, but admitted that our system was a bit unique & complicated. So they called in the boss Jasper, who took a look, knew exactly what he was seeing, confident in what needed to be done (confirming what Alen and Peter had told us). I was impressed! It took Josh/Chris? and him team 3 long days to do the work, and the result was complicated work of art. After installation, there was a part-compatibility issue that needed addressed, which was taken care of. And over a year later, we realized that one of our eight heating zones wasn't working properly. Taso visited a few times to fix that. The project and boiler were not cheap. Honestly, we were in shock when given the estimate. But it was at the peak of the supply-chain issue; and the work was, as noted, very complicated; and the boiler is very modern and super-efficient. It was all worth it. Guardian was always very accessible and responsive, and never hid or made excuses when a few fixes were needed. And having confidence that Guardian knows what they're doing, do great work, and stand behind their work, means everything. 3/1/2024: Update: I have Guardian’s maintenance plan, which covers an annual checkup. Sergio and Burt were super friendly and professional, did an inspection, replaced a broken gasket, and cleaned the system. Much appreciated!

Jenna Nommensen

Luis was very thorough and did a great job. Thank you!

Bill Murphy

Great people to work with.