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HVAC Services for Heating and Cooling – Oak Park, IL

Any time your air conditioner or heater stops working, life is interrupted. Not only is it uncomfortable to be too hot or too cold in your home, but it can also be dangerous. It’s important to have someone you know you can trust to promptly repair your HVAC in Oak Park, IL.

Deljo Heating and Cooling has been servicing the greater Chicago area for over a decade and has earned the trust of countless homeowners. We are proud of the reputation we have built, and we intend to continue the service we are known for.

HVAC Services in Oak Park, IL

HVAC Maintenance Services

Regular maintenance of your heating and cooling system is essential for continued efficiency and longevity. We recommend biannual service during spring and fall to ensure your HVAC system will work reliably throughout extreme high and low temperatures. Our HVAC technicians will inspect, test, and clean your system, replacing worn parts. We will make sure everything is working efficiently before leaving your home.

HVAC Repair Services

Whether you need AC repair, furnace repair, or anything in between, our technicians have the experience and knowledge to diagnose and repair any heating or cooling system. We arrive promptly for your appointment, remain professional and respectful of your time and home, and fully address all questions and concerns you may have.

If for some reason part of your HVAC system is beyond repair, we will discuss your needs and together decide how to proceed. 

HVAC system repair in Oak Park, IL

Air Conditioning and Furnace Installation

Dejo Heating and Cooling can install any type of boiler, furnace, heat pump, AC unit, or dual system you may need. If you are ready to upgrade but are unsure what system is best for your home, we would be happy to discuss your needs and budget and make a professional recommendation you feel confident with. 

Our team works quickly to ensure your timely return to comfort. Our goal is your satisfaction, and we take that very seriously. 

HVAC Services in Oak Park, IL

During the century Deljo Heating and Cooling has served the greater Chicago area, we have developed a high standard of excellence that’s promised to every customer, every time we visit. 

We truly care about our neighbors, and we want you to be comfortable and safe in your home. That’s why we also offer emergency repair service, no matter what time of day or night. Experience the Deljo Difference yourself, and rely on us for all your HVAC service needs.

Client Testimonials

Read the opinions of our satisfied customers.

I always use Deljo. The entire staff is amazing from intake calls to install. They were fast, professional and gave us a fair price.

Monica OConnor Chicago IL.

Joe was great. We came home to a cold house on a Sunday night and he came out to diagnose the issue right away. Very knowledgeable, very friendly.

Kyle Sant Chicago IL.

We’ve been using Deljo for several years and have had a great experience with them. They’re prompt, reliable, and trustworthy. The technicians (David was the most recent) have been great.

Ari Telisman Chicago IL.

My hot water heater had some leaky pipes due to corroded unions. The repair took longer than I thought due to some unforeseen circumstances. Unfortunately after the repairs the water heater stopped working...

Maria Pradd Chicago IL.

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Our Service Areas

Contact Deljo Heating & Cooling today. We look forward to hearing from you and helping out with all your indoor comfort needs.

Chicago Suburbs

Chicago Neighborhoods