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312-818-2840

3916 N Central Park Ave

Chicago, IL 60618

900 Skokie Blvd, Suite 110

Northbrook, IL 60062

Guardian Heating & Cooling is a big believer in the value of word-of-mouth advertising. That’s where you come in:

When you refer a friend to Guardian Heating & Cooling, you will share $100. More importantly, your friend will start receiving the same benefits you do when doing business with Guardian:

All work will meet or exceed local & national requirements

The job will be done right the first time, every time

Technicians are background checked & drug tested

Help your friends and family members save time and money by using the best in our trade. Let them in on the secret of getting things done with one phone call to Guardian.

*Guardian will give you $50, and the person you referred will get a $50 discount.

Your Name(Required)
Your Address(Required)
Friend's Name(Required)
Friend's Address(Required)

*Referred person must be a first-time customer of Guardian Heating & Cooling. Lucky person who was referred: At the time of your first appointment, present the confirmation email or print a copy of it to your technician and you will receive a $50 discount off your first invoice. The awesome person referring new customers: You will receive a $50 credit on your account for your next service after the referred person presents their email at their first appointment. If you do not receive emails after filling out this form, let our office know immediately.

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Industry Leading Service and Craftsmanship

For over 73 years, we have been dedicated to providing reliable service, expert craftsmanship, and unmatched customer care. Our loyal clients has allowed us to grow, evolve and continue serving our community with the highest standards. 

Read Our Blog

Explore our latest heating and cooling tips, guides, and expert insights to keep your home comfortable in every season. From energy-saving advice to maintenance reminders and system troubleshooting, our blog is here to help you make informed decisions about your HVAC system.

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Nolan Randall profile picture
Nolan Randall
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Guardian was a lifesaver - They came out on short notice for a quote and were able to come the next morning to install our new AC. Jonathan was a fantastic rep as well, very informative and helpful. Highly recommend.
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Paul Cronin profile picture
Paul Cronin
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JohnnyRay Rivera was thorough, professional, and completed his work in a timely fashion. I highly recommend Guardian Heating & Cooling for all your HVAC needs.
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Jeff and Marissa Delgado (Jeff and Marissa Delgado) profile picture
Jeff and Marissa Delgado (Jeff and Marissa Delgado)
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I've used this company twice already and both times have been great! Last night, our A/C was not cooling our 3,000 sq ft house and with a toddler in the mix, we needed to get this fixed fast! With that being said, I called the next morning and they were able to be accomodating to my request of coming over to fix it. Less than an hour later, they called to mentioned they'll be over that day! Lisandro came over and figured out what the issue was a knocked it out in less than hour. Ironically enough, I had an A/C tune up scheduled for the follow day. So he was able to take care of that as well. Needless to say, with the temps in the 90's this week, we back to the A/C running on all cylinders. I highly recommend this business!
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Manu Srivastava profile picture
Manu Srivastava
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JohnnyRay was very communicative and thorough in his assessment. He explained his concerns well and identified things I should watch out for in the future.
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pat kushino profile picture
pat kushino
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Johnny Ray was friendly, honest, knowledgeable, courteous & thorough. He inspected, cleaned the air conditioner coil, checked the specs and provided recommendations and insights to optimize my HVAC system.
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Mary Fabianski profile picture
Mary Fabianski
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Guardian Heating and Cooling has been my heating and air conditioning contractor ever since I moved into my Chicago home 25 years ago. I have replaced/upgraded my furnace and air conditioner over the years, and, at the same time, followed regular seasonal maintenance on my units. All systems are good and running well, but my concern for my ever-increasing gas bills prompted a request to have Guardian come to my home and consult, evaluate, and advise me on possibly improving the efficiency of my home heating and cooling systems. Jasper and Jonathan arrived promptly, introduced themselves, and first, asked me about my concerns. After a thorough walk-through and accompanying explanations of possibilities, they advised me on how to improve the comfort levels, both heating and air conditioning. They explained everything clearly and completely, and there was never any pressure to change and/or update and then spend, spend, spend. They gave me honest advice which I understood and appreciated, and which ultimately did improve the comfort levels in my home for both heating and air conditioning. Jasper and Jonathan, thank you again. I am one happy Guardian Heating and Cooling customer!