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Professional HVAC in Sauganash - Maximize Your Comfort

Deljo Heating, Cooling & Plumbing is one of Chicago’s top HVAC companies. Our mission is to provide customer-focused solutions that fit the local needs of homeowners across the city. Our expert NATE-certified technicians specialize in repairing, installing, and maintaining heating and air conditioning systems with the latest tools and industry-leading techniques.

We Offer a Full Range of HVAC Solutions

Our highly-trained and experienced technicians confidently address a wide range of HVAC services including:

Installation Excellence:

Whether you are in need of a new HVAC system or are looking to replace an old one, we can help you select the perfect solution for your heating and cooling needs. After you make your choice, we will provide professional installation, making any necessary tweaks to guarantee its seamless operation.

Precise Repairs:

Contact us anytime your furnace, air conditioner, or other HVAC equipment is not operating as it should. Our team offers proficient HVAC repair services in Sauganash. We have the technical expertise to tackle issues with most makes and models of furnaces, air conditioners, ductless mini splits, and even boilers. Employing cutting-edge repair techniques, we swiftly and efficiently restore functionality to your HVAC system.

Proactive HVAC Maintenance:

Regular maintenance is the key to maintaining system performance, energy efficiency, and extending the useful life of your HVAC system. Our technicians are adept at performing routine maintenance tasks, including the thorough inspection of your heating and cooling systems. This process ensures we are able to find and address any small problems before they turn into larger, more costly repairs.

Why Sauganash Homeowners Rely on Us

In our 100+ years of operation, we’ve earned a reputation for excellence as one of the leading HVAC companies in the Sauganash and Forest Glen areas. We uphold an unwavering commitment to quality, transparency, and customer satisfaction, which means you can count on Deljo for:

Professional Expertise:

Our team consists of only highly-trained, experienced technicians ensuring reliable, top-tier service.

Superior Quality:

We use only the highest quality equipment backed by manufacturer warranties.

Exceptional Customer Service:

Our technicians are prompt, professional, and customer-focused.

Competitive Pricing:

Our pricing is transparent, fair, and straightforward, eliminating unexpected costs. We also provide flexible financing options to all our valued customers.

Round-the-Clock Service:

Our emergency services are available 24/7 for any unexpected issues that arise.

Rather than simply offering general air and heating system services in Chicago, we pride ourselves on providing comprehensive, customer-focused solutions. Whether we’re installing a new water heater, conducting furnace repairs in Sauganash, or simply replacing dirty air filters, you can trust the job will be done right the first time.

Contact Us Today

Experience the Deljo difference. Call 773-829-4295 today, or click here for a free quote. We’re always available to address your questions, concerns, or HVAC emergencies. With Deljo Heating, Cooling & Plumbing, you can rest assured your home’s comfort is in expert hands.

Client Testimonials

Read the opinions of our satisfied customers.

5 stars

This was my first time as a Deljo customer, and I was very pleased. My technician, Giovanni, was very thorough and diligent. He serviced my furnace and identified a faulty sensor that was causing the unit to shut itself down. Deljo ordered the part, and Giovanni replaced it a few days later. Overall, the team at Deljo was great. The dispatcher kept me informed about Giovanni’s arrival time, and the supervisor assisted Giovanni when he was diagnosing the problem with the furnace. I highly recommend Deljo.

Paul D. 10/15/2026

5 stars

I’ve used Deljo for over 10 years now and they always do a good job. Izzy was the technician for this visit and he did an excellent job with my winter maintenance on my multiple units in the household. He also addressed an issue while cleaning the furnace blower wheel. His communication was clear and concise with what he planned to do to address the issue quickly. He was confident and I had 0 concerns or questions. Great job Izzy!

Jeff S. 10/14/2026

5 stars

Paul was great! Arrived on time and completed maintenance on my humidifier, tankless water heater, and two furnaces. All work was performed under my Gold Star maintenance program, so all maintenance charges were covered. Paul did provide a few proposals for additional services on furnace & tankless water heater, but those were emailed to me for further consideration. Paul was friendly, knowledgeable, and answered all my questions.

Jack N. 10/12/2026

5 stars

Gabe did an excellent job with our annual service visit. He arrived in the early part of our service window, was friendly and knowledgeable, and got the work done in a very reasonable amount of time. I have great confidence in Deljo, and am a long-time customer.

Ruth C. 10/9/2026

5 stars

I’ve been using Deljo for 20 years for HVAC but now venture into enlisting their plumbing services. Bashar was very courteous, efficient & informative, and I’d definitely request him again for the next plumbing job. Great experience!

Christopher R. 10/2/2026

5 stars

Working with Deljo is always a good experience, and today’s appointment with Izzy was no different. He was able to come early which actually worked better with our schedules, but called me ahead of time to make sure that was okay. He was friendly and knowledgeable when he explained the work he had done during his visit and our options for fixes. He was also able to schedule a quote appointment for us while he was still here. We would highly recommend working with Izzy and the Deljo team!

Lauren H.  9/25/2026

5 stars

Drew performed the seasonal maintenance on my AC. It needed some repairs and updates and he was able to fix everything at the same appointment. He also noticed issues with the hot water heater and we were able to get ahead of that, as well.

Emily W. 9/11/2026

5 stars

I would leave six out of five stars if I could! My technician Jorge went above and beyond on his service. There was buildup in the rental property’s toilet from the previous tenant. One maintenance person did a surface level job of cleaning but did not fully remove the obstruction. Jorge went above and beyond and came to a solution and even explained the perpetual problems older toilet models can cause. Moving forward with this insight, I can perform my own upkeep the previous tenant did not. Thank you kindly!

Kayla K.  9/15/2026

5 stars

We just had our new boiler installed by Jonathan and Carlos. First rate work! They arrived on time, removed the old boiler, installed the new unit, and explained the features. Both guys were pleasant. Bring on the cold this winter! We are ready thanks to the team from Deljo.

Edward B.  6/26/2026

5 stars

Deljo’s heating and cooling team was awesome to work with. As a first-time homeowner, I really appreciated how clearly they explained everything and answered all my questions. From the quote to the install and follow-up, the service was top-notch. Highly recommend!

Lindsey A. Chicago, IL

5 stars

Matt did an amazing job. He serviced our home and our rental property. He gave us options to help our systems run more efficiently. He also told us about Deljo’s new plumbing inspection which was very affordable. He is great!

Jordan R. Chicago, IL

5 stars

We had a problem with our Humidifier and called Deljo. Jesus came out to help and was amazing. He was extremely knowledgeable, detail oriented, and super courteous. Amazing customer experience!

Jeff C. Chicago, IL

5 stars

Jordan and Jesus were extremely helpful and knowledgeable! We would 100% work with them and have them back. They were both very professional and efficiently fixed our heating system.

Emily L. Chicago, IL

5 stars

Shout out to Ernesto for coming out and servicing our furnace and air con. Deljo provides a great service and glad to trust them with our HVAC for our small business.

Lauren H. Chicago, IL

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