Deljo Heating and Cooling has a rich history spanning over 100 years in the local heating and cooling industry. Throughout this time, we have served two generations of Chicagoland residents and business owners, providing them with top-notch HVAC products and services. Our commitment to excellence has ensured that our customers stay comfortable during the extreme temperatures of both winter and summer seasons.
Jay was pleasant and professional. His expertise and knowledge are top notch. Thanks for your services Jay!!
WB
Waldemar Barabas
3 days ago
5.0
Service man was very pleasant and good at his job
LH
Lisa Hile
Dec 28, 2025
5.0
A bad problem solved very quickly. Cold water showers in January are no fun! Everything was professional and fair from start to finish
TH
Tom Hehir
Dec 21, 2025
5.0
I had a great experience with the technician who showed up. He was able to easily determine what was wrong with the humidifier attached to my furnace and resolve my problem.
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Vannak Hong
Dec 7, 2025
5.0
The technician, Drew first came to give our furnace a tuneup. He was very professional, thorough, and explained that there were quite a few repairs needed. We met with an advisor Tyler about our options, and after comparing a few quotes we decided to go with Deljo for a new Furnace and AC package. Jonathan was the technician who installed the furnace and did a good job. He was punctual, professional and explained to us the process. We were upgrading to a high efficiency furnace so he needed to install two pvc pipes and drill holes through wall. After the work was completed, everything was cleaned up and he
went over what was done and how the furnace and thermostat works. The AC will be installed at a later date, weather permitting so it can be tested. Overall the service from beginning to end was great so far!