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Why Deljo is a Heating and Cooling Company You Can Trust

When you need service for heating and cooling in Chicago, your search for a contractor you can trust can be both intimidating and annoying. Intimidating because a quick online or yellow page search will give you the names of dozens of contractors and annoying because at first glance you don’t know which of those contractors is worth your time and money.

We’ll make things a lot easier for you by pointing some of the reasons Deljo is the company to trust to provide the highest quality heating and cooling services.

  • Experience

    – Deljo’s provided service for heating and cooling in Chicagoland since 1922, servicing countless thousands of homes and businesses. You don’t remain in business for almost 100 years unless you’re providing experienced, first-rate service.


  • Reputation

    – At Deljo, we’ll put our reputation and credentials next to anyone’s. We’re proud to say that we’re an Accredited Member of the Better Business Bureau and recipients of the Angie’s List Super Service Award from 2004-2014. We believe that those memberships and awards say a lot about the service you’ll receive from Deljo.


  • Certification

    – It might surprise you to learn that Illinois has few statewide HVAC licensing requirements, meaning that virtually anyone can call themselves a heating and cooling technician. But not the technicians working for Deljo. All our technicians are NATE (North American Technician Excellence) certified, and there’re constantly going through additional training to keep up with the latest techniques in heating and cooling technology.


  • Brands Carried

    – Be assured that Deljo installs only the highest quality heating and cooling equipment available on the market. We’re a certified Carrier dealer, guaranteeing that we’ll install only the very best equipment in your home or business.


  • Written Estimates

    – When you call Deljo, one of our certified heating and cooling specialists will meet with you and give you a written estimate of the work needed. We’ll never engage in the old bait-and-switch technique, giving you one price on the phone and another higher price when we arrive to do the work. With Deljo, we guarantee that will never happen.

If you need service for heating and cooling in Chicago, these are a few of the reasons why Deljo Heating & Cooling is the company you can trust. Call us at 773-829-4295 and join our long list of satisfied Deljo customers.


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