Air Conditioner Repair, AC Repair & AC ServiceEvanston, IL, Niles, IL, Wilmette, IL, Skokie, IL, Lincoln Park, IL & Chicago, IL

More often than not, the weather in Evanston, IL presents a challenge. One thing is always certain. Guardian Heating & Cooling Service takes the very best care of your comfort. Specializing in every aspect of temperature control and air quality, we champion energy efficiency, cost savings, reliability, and sustainability. Give us a call at 312-818-2840, explain your needs, and we’ll handle the rest to your total satisfaction.

Top Quality Heating & Cooling Services

Are you looking for residential or commercial HVAC system installation? Guardian Heating & Cooling Service specializes in quality and innovation. We are a Carrier Factory Authorized Dealer. Our techs are NATE-certified, strenuously trained, and current in cutting-edge heating, cooling, and IAQ technology. We cater to every demand with exceptional results and ensure affordability through convenient financing.

For all your HVAC repairs & installations in Chicago, IL and surrounding areas, call the Guardian Heating & Cooling Service team!

If you’re considering the many, many, many benefits of preventative upkeep, we highly recommend our Shield of Protection Maintenance Plan (SPP) for best care of all makes and models of equipment. Enjoy priority service, 30% discount on equipment repairs, and no signup or cancellation fees. For concerns, don’t wait to schedule repairs with us and restore peak performance. Guardian Heating & Cooling Service is known for our prompt, professional, and effective service across Lincoln Park, Skokie, Chicago, Niles, Evanston, Wilmette, Park Ridge, and Morton Grove, IL.

Boiler Service in Niles, IL | Air Conditioner Repair Evanston, IL | AC Repair Wilmette, IL

Serving Chicago, IL and surrounding areas

AC InstallationAC ServiceBoiler ServiceBoiler RepairAir Conditioner Repair ∴ Morton Grove, IL ∴ Wilmette, IL ∴ Chicago, 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
  • Free 2nd Opinion


    *Cannot be combined with any other offers. Must present coupon at time of service.

  • Mini-Split(Ductless) Installation

    $250.00 Off*


    *Restrictions apply. Cannot be combined with any other offers. Must present coupon at time of service.

    Expires: 06/30/2023

  • $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.

  • 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.

What our clients are saying

Maggie HaysMaggie Hays
21:05 09 Mar 22
I called Guardian Heating & Cooling because my Nest had lost power and my furnace wouldn't turn on. Sergio arrived within 1hr and quickly diagnosed & addressed the issue. He was very communicative and helpful throughout the whole process; I will definitely be working with Guardian again.
Paul APaul A
21:18 24 Feb 22
When our heat went out during a particularly cold winter night, Guardian was very responsive in getting our furnace repaired same day. We were able to credit our repair expenses towards a new furnace to replace our aging system - great!Rory and Akeem did a great job installing our new furnace. They had great attention to detail and took the time to do the job right. We am very satisfied with the install.Everyone we interacted with from Guardian was polite and courteous. We would recommend them and plan to use them in the future!
james meissjames meiss
22:31 22 Feb 22
Very courteous and professional technicians. Took them me to make sure everything was in good working order before leaving. Also gave good tip for furnace filter product. I highly recommend Guardian!
Beth SkonyBeth Skony
00:27 16 Dec 21
I just had a great service call on my boiler with Tyler from Guardian Heating. He was extremely thorough and professional, and he took extra time to answer my questions about my system and the possible addition of a smart thermostat. I’m happy to be with such a responsive and caring company after having some unpleasant experiences with a previous heating maintenance company. I contacted Guardian a year ago for a second opinion (based on a referral from another satisfied customer), and ultimately I needed a whole new boiler system and rerouting of some of the piping. They had the new equipment installed within a couple days of the diagnosis, and the installation techs and Jasper, my sales advisor, were wonderful every step of the way. I look forward to working with Guardian for many years to come!
Becca RichardsBecca Richards
22:57 09 Dec 21
Guardian is very reliable and provides wonderful customer service. Sergio was recently at our home to manage a humidifier and heating issue. He was prompt and respectful. He was in a mask and immediately put booties on. He was careful in our home. He assessed the issue and communicated clearly is plan for fixing it. He was efficient and very clean. I would happily have him back anytime. Thank you so much!

Installing the best and servicing the rest!