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Professional Heating and Cooling in Des Plaines, IL

When your heater or air conditioner stops working, it can be disruptive to your daily life. We understand how important it is to have a comfortable home and will respond quickly to fix the issue. Our technicians are highly trained and experienced, so you can rely on Deljo Heating and Cooling to get the job done right the first time.

Our company has been providing top-notch HVAC services to Chicagoland for over 100 years, and our customer satisfaction focus has earned us our stellar reputation. We believe good business is built on relationships, so earning your trust is our priority.

Deljo Heating and Cooling is committed to delivering premier HVAC maintenance, repair, and installation services with every visit for every customer.

HVAC Maintenance

The best way to prolong the lifespan of your heating and cooling system is to schedule regular maintenance. Another advantage of keeping up with maintenance is that your system will run more effectively and efficiently, keeping your home comfortable and your energy bill low.

Ideally, maintenance should be done every spring and fall to ensure peak performance during seasons with extreme temperatures.

Heating & Cooling Repair

From heat pumps and ductless systems to boilers and traditional AC units, Deljo Heating and Cooling has the experience and skill to repair any HVAC system. Our specially trained technicians will diagnose and repair your heater or air conditioner promptly and professionally.

HVAC Installation

All heating and cooling systems eventually break down and wear out, even with the most meticulous care. When your HVAC system needs to be replaced, you can count on Deljo heating and cooling to provide the highest caliber of service when replacing or upgrading your system. If you need a new installation, our team can make professional recommendations best suited to your home, needs, and budget.

HVAC Installation Des Plaines, IL

Emergency HVAC Services

When we say we care about our customers, we mean it – we are only ever a phone call away. Regardless of day or time, when your heater or air conditioner stops working and you need us, we will be there. During extreme weather conditions, a broken HVAC system can put people and pets at risk for illness, count on Deljo Heating and Cooling.

Trusted HVAC in Des Plaines

For over a century our customers have put their trust in Deljo Heating and Cooling for all their heating and air conditioning needs. We invite you to experience the Deljo Difference when your HVAC system needs service in Des Plaines. We promise to meet or exceed your expectations or your money back, so schedule an appointment today.

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