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Deljo Heating & Cooling

At Deljo Heating and Cooling, we bring a lifetime of experience to our commercial and residential customers in the north and northwest suburbs of Chicago. For over 80 years, we’ve been keeping all of our friends and neighbors comfortable in their places of business and homes. We have a solid reputation for cost-effective solutions, expert HVAC repairs, professional design and installations and great customer service. With our 24/7 emergency service, we’re ready for your call afterhours and on weekends. If you experience a sudden breakdown, we quickly dispatch a service technician in a fully stocked service truck for an expedient repair. We’re the heating and air conditioning company where your comfort is our main priority.

Great Pricing, Great Technicians and Great HVAC Products

We offer services to meet your lifestyle and wallet. In addition to competitive pricing, we offer Internet coupons for savings on service calls, installations and new equipment. Be sure to check out our website for the current specials. If you prefer to hold onto your existing funds or keep your credit line open, our flexible financing plans are the ideal alternative. They feature flexible terms and preferred interest rates.

Our technicians have the skills, knowledge and tools for any HVAC repair or installation. They are factory trained and industry certified. They also attend regular workshops to enhance their skills and stay current with new industry methods, tools and models. Our customers can trust in the skills of our technicians, and all of their work is guaranteed.

We’re also the heating and air conditioning company that brings you the most innovative and energy efficient HVAC systems. Our large product gallery includes quality brand heat pumps, furnaces, boilers, packaged systems, ductless systems and hybrid systems. Our equipment will not only meet your needs of indoor comfort and energy efficiency, it will exceed your expectations.

Factory Authorized Carrier Dealer

Deljo Heating and Cooling is a factory authorized Carrier dealer. What does this mean for our customers? It means you get A+ HVAC products and A+ customer service all of the time. Becoming a Carrier dealer is an honor; less than five percent of HVAC contractors are accepted. An HVAC contractor must meet and maintain Carrier’s high benchmarks of exceptional work performance, best practices and superior customer service. We’re happy to provide our customers with the best HVAC services possible.

Don't Take Our Word For It! Here's What Our Customers Are Saying

  • Deljo Heating & Cooling
    Deljo Heating and Cooling, 9 out of 10 for overall service, I was very satisfied with the service.
    - F. Artwick, Chicago IL
  • Deljo Heating & Cooling
    Frank did a great job explaining everything. I was very happy with the installation.
    - Steve M, Chicago IL
  • Deljo Heating & Cooling
    John was the ultimate professional and the crew followed suit. I was extremely happy with the entire process.
    - Kenneth R, Chicago IL


Angie's List Super Service Award President's Award Better Business Bureau


NATE Certified Puron

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