$200 OFF Special price for Installation of a replacement Humidifier read more

The Deljo Difference

We recognize that when it comes to HVAC services in the Chicagoland area, our customers have choices. So before you choose to work with the experts at Deljo Heating and Cooling, it’s fair for you to ask: Why Deljo?

In fact, we’d encourage you to ask this question of any HVAC service provider in the Chicago area. Because if they dodge the question or give a weak answer, you should probably look elsewhere. But let’s get to the point.

What Makes Deljo Different?

Deljo Heating and Cooling isn’t a new kid on the block. We established a tradition of HVAC excellence in Chicago way back in 1922. And in the span of nearly one hundred years in business, we’ve upheld that tradition by always staying up to date on new equipment and service techniques in the HVAC industry.

Of course, along the way, we’ve added in our own unique take on what it means to bring personalized service to our customers. In that way, we’re not just a company that provides heating and cooling services, we’re here to help you be comfortable in your own home.

Deljo’s People: Comfort Specialists, Installation Experts, and Service Technicians

People, including the customer and the staff member, are at the heart of what Deljo Heating and Cooling is and why we’re able to consistently provide such high levels of service.

Our team of Comfort Specialists was assembled to help our customers solve any and all of their home’s comfort problems. Collectively, this team has several decades of experience. Then there’s the team of Deljo’s Installation Experts, a reliable crew of seasoned HVAC installers who enjoy tackling new challenges and making things work when others can’t.

Finally, our Service Technicians and Office Staff take their role as ambassadors of our company seriously, efficiently fixing all sorts of problems and walking homeowners through the process every step of the way.

Serving the Customer First

In everything we do here at Deljo Heating and Cooling, the customer is at the center. In addition to our team of friendly, knowledgeable experts, we provide other conveniences such as financing, subject to approved credit, so you don’t have to wait a second longer for your home to be as comfortable as you want it to be.

Want to see The Deljo Difference for yourself? Next time you need to hire a heating and cooling company for air conditioner repair or any other HVAC problem, give us a call!

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.

Questions? We Can Help! Contact Us Today!

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

This or That?

With the purchase of a full system, choose from:

This : Free Tanked Natural Draft Water Heater


That: Up to a $3,000 discount

Monthly payments as low at $89/Month

Must qualify for financing through Service Finance Company

All other discounts and promotions may not be applied to this offer. All installations must be completed by April 14, 2024 to qualify.

Promotion can be redeemed only after moving forward with proposal or equipment replacement. Can be scheduled via email, phone, or website.