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

Full-Service HVAC—Heating and Cooling in Lincoln Park

Any time your heater or air conditioner stops working, your whole day can be thrown off kilter. You essentially have three ways to handle the situation. You can research contractors to find a trustworthy company, call the first one that comes up in a search, or call the pros with over 100 years of experience.

Young man holds portable fan in front of him as he tries to cool off without in-home air conditioning.

Rather than risk having an unlicensed HVAC technician charge an arm and a leg for bad service, rely on Deljo Heating and Cooling. We have been providing Chicagoland residents with superior HVAC service since 1922. Add our number to your phone now and simply call when you need us.

HVAC Preventative Maintenance

Regular maintenance is the best way to prolong the life of your heating and cooling system and keep it running efficiently. This will help you save money in the long run by preventing spikes in your energy bills and avoiding the need for early HVAC replacement.

We recommend HVAC tune-ups right before summer and winter to help ensure your system will last through seasons of extreme temperatures.

Air Conditioning and Furnace Repair

Any time you notice your HVAC system behaving oddly, pay attention to how often symptoms occur and if there are any particular triggers. You can try cleaning or changing the filter if it’s dirty, and call us if you believe there may be something wrong. It’s much better to address problems early on rather than wait to see what happens, which can result in pricey repairs or replacements.

Our experienced HVAC technicians will promptly diagnose and repair your heater or AC unit, returning your home to the level of comfort you’re used to.

HVAC technician in overalls tighten pipes and fittings during residential boiler installation

AC and Heating System Installation Services

With proper maintenance and care, traditional HVAC systems can last up to 15 years. When you need to replace your current heater or air conditioner, rely on Deljo Heating and Cooling for premier service and installation.

If you have recently added a room to your home and need to have a new unit installed or are ready to upgrade to an energy-efficient system, our installation experts will be happy to help. We can provide educated, professional recommendations to fit your needs and budget.

Comprehensive HVAC in Lincoln Park

Deljo Heating and Cooling was built on a foundation of solid values, including high service standards, customer satisfaction, customer relations, and honesty. We have always treated our customers like family because we care about their comfort and safety. That’s why we offer emergency heating and air conditioning service 24 hours a day.

No matter the weather or time of day, our certified HVAC technicians are here to help keep you and your family safe in your home. We understand how dangerous it can be to go without heat in the winter or AC in the summer, so when you need help with your HVAC, just give us a call.

We have more than a century of top-tier HVAC service and experience, and we provide 100% customer satisfaction. We set our own standards well above industry standards to help ensure you have a pleasant service call every time. We invite you to experience the Deljo Difference 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.

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.