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AC Installation in Chicago, IL

At Dejo Heating & Cooling, we specialize in air conditioning installations in Chicago and the surrounding areas. Whether you’re replacing an aging air conditioning unit or installing an air conditioner in a new building, it’s important to work with an experienced HVAC company. Working with seasoned HVAC professionals will ensure your new air conditioner is up to the challenge of cooling your home during a harsh Chicago summer.

If you need help beating the heat, give us a call today at 773-280-8251 so we can help you find the best cooling solution for your home.

When to Schedule AC Installation

Are you wondering when you should schedule AC installation? The infographic below outlines four signs it might be time to replace your old AC unit with a new one.

New cooling equipment is a costly investment, but worthwhile for the sake of saving money, energy, and stress. Here are four signs it might be time to replace your old AC unit:

✔ Your System Is At Least A Decade Old

Most AC units created in the last 10-15 years are not as energy efficient or long lasting as those made today. Finding new parts to repair or replace equipment on your unit can become more difficult over time as well.

✔ Humidity and Temperature Problems Throughout Your Home

If at least one room in your home feels warmer or heavier than the others, then your ductwork or AC unit might not be fully operational. A fully functioning AC unit should keep your home consistently cool and dry.

✔ Constant Repairs Are Needed

With proper maintenance and care, your AC unit should seldom need repairs. You should consider a replacement when equipment malfunctions or breaks more than once every year or two.

✔ Your Energy Bills Skyrocket With Little Usage

Even if you operate your AC minimally throughout the warm weather months, an older system has to work harder than a newer unit to cool down your home. Replacing your air conditioner means less energy usage, repairs needed, and money spent paying the utility bill.

Chicago’s Best Heating and Cooling Company

Deljo Heating, Cooling & Plumbing has been Chicago’s most trusted HVAC company for almost 100 years. Our team of trusted technicians are ready to help you whenever you’re ready. Contact us at 773-280-8251 to schedule your replacement today.

Deljo’s AC Installation Process

Once we’ve determined your cooling needs and selected a properly sized unit, we can get to work installing the AC in your Chicago home. Our NATE-certified technicians will work quickly and efficiently to get your new unit up and running before you know it.

For most homes, the installation process takes less than a day. However, the process may carry over into a second day if you have a large home or you need new ductwork or wiring. Residential AC installs rarely take longer than two days, but we’re more concerned with getting the job done right than beating the clock.

Our technicians perform more than 100 distinct steps for every AC install in Chicago to ensure that the systems we install work as efficiently as possible. Although other companies might get the job done faster, they cut corners to do so. What seems like a speedy install frequently ends up taking more time in the long run because of the need for additional service calls.

When you work with Deljo, you know that customer service is always our top priority. We’ve kept our doors open for over 100 years by providing quality service to every customer. Our goal is to earn your business for life. So, whether you need air conditioning service or some other HVAC service, know that we’ll always go above and beyond to keep you comfortable.

Choosing the Right Air Conditioner

You might be wondering how exactly we pick your air conditioner. The process can be broken down into 2 steps: choosing the right size and the right style. Explore both steps in more detail below.

What Size AC Do I Need?

Before we begin any air conditioner installation, we help customers decide what size AC they’ll need. Selecting a unit that’s too small will overwork the AC, which will ultimately fail to keep you cool. On the other hand, units that are too large waste your money via higher upfront costs and higher energy costs.

If your air conditioner struggles to maintain a comfortable temperature, we’ll help you find a more powerful replacement. If your old model kept you cool but left your space overly humid, you may want to replace it with a smaller model.

And if your old unit worked perfectly (until it didn’t), we’ll help you find a similar model. But if you were happy with your old AC, consider repairing it before buying a new unit. Schedule an appointment with us for air conditioning repair, and we’ll send a technician out to diagnose your issues. By doing so, we may be able to save you the cost of replacing your unit.

Learn about how long heating and cooling systems last.

What Style of AC Do I Need?

For homeowners in Chicago, central air conditioning often makes the most sense. However, ductless mini-split systems open up a world of possibilities, allowing you to maintain different temperatures in different areas of your home. Whatever your needs, we’ll help you find the perfect system to keep you comfortable.

Central Air Conditioning

Ideal for single-family homes, central air conditioning systems allow you to control the climate throughout your home from a single control panel. These systems typically include an indoor air conditioning unit that’s often placed in an attic or basement and an outdoor unit that’s often placed on the ground adjacent to the home or on a flat roof.

The indoor AC unit cools warm air from outside and pushes it through ducts installed throughout your home. The outdoor unit allows the system to expel the excess heat outside.

Central ACs tend to have lower upfront costs than other whole-home systems. But that’s only the case for homes that already have ductwork in place. A ductless system might be a better option if your home does not have ductwork.

Mini-Split Systems

Homeowners looking to install air conditioning for the first time might consider a mini-split system instead of a traditional central AC. These systems include multiple indoor units, allowing you to cool different “zones” in your home independently of one another. And, like all air conditioners, they also feature an outdoor unit to allow the warm air an escape.

Although these systems tend to be more expensive upfront, they’re also more energy efficient than central ACs. Mini-splits cool your space from within each climate zone rather than pumping cool air throughout the home from a central location. Thus, they don’t waste energy cooling the ducts in your home.

Plus, by maintaining distinct climate zones, mini-splits can restrict cooling to the areas of your home that need it. Why pay to cool your guest room when it’s empty?

We should also note that mini-split systems keep you comfortable year-round with both heating and cooling capabilities. So if you’re building a new home or replacing your heating and air conditioning systems, mini-splits allow you to save money on utilities from January through December.

Click here to learn more about ductless mini split systems.

Need Air Conditioning Installed in Chicago?

With 100 years of residential and commercial comfort experience to our name, our team can precisely identify the needs of your space. Once we’ve determined your needs, we’ll provide you with options of ACs in the “Goldilocks zone” that will fit your home’s needs and budget.

Why settle for anything less than the best when your comfort is on the line? Call us today at 773-280-8251 for a free estimate.

Deljo Heating, Cooling & Plumbing is proud to be providing AC installation and replacement services to our neighbors throughout Chicago and the surrounding suburbs. Schedule service today and find out why so many of your neighbors have trusted us with their AC installs.

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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