24/7 emergency support and flexible financing

Cooling

Questions About Your A/C? Contact Us Today!

Call Now 773-829-4295 Schedule Your Service

AC Services

Chicago summers can be hot, humid, and unpredictable. When the temperature spikes, you want reliable AC services on call. For more than a century, Deljo Heating & Cooling has delivered trusted air conditioning services in Chicago, Illinois. From emergency cooling repairs to preventative AC servicing, our team keeps your home comfortable all summer long.

Our comprehensive offerings include everything from installation and maintenance to 24-hour emergency AC service in Chicago. Ready to schedule an appointment with one of our technicians? Call us or reach out online. Keep reading to learn more about our individual air conditioning services.

Repairmen works on a home's air conditioner unit outdoors.

Air Conditioning Repair

When your AC stops working properly, Deljo’s experts are ready to respond. We diagnose and repair all makes and models of air conditioners. Count on us to quickly restore your comfort.

Learn more about AC repair

HVAC technician uses special tools to test air conditioner during tune-up

Air Conditioning Installation & Replacement

A new air conditioning system will improve your home’s comfort and energy efficiency. Our team helps you choose the right system for your home and budget, then installs it to the highest professional standards.

Explore air conditioning installation services

Preventative AC Service & Tune-Ups

Prevent costly breakdowns and keep your system running smoothly with regular maintenance. Our comprehensive AC service includes cleaning, calibration, and performance checks to ensure maximum efficiency.

Learn more about AC maintenance

24/7 Emergency Cooling Service

Cooling emergencies can happen at the worst times. We recognize this, and that’s why we’re always here for you. Our emergency HVAC technicians are available around the clock to restore comfort when you need it most.

Get Emergency HVAC Help

Ductless air conditioning unit on bedroom wall

Ductless Systems

Looking for an energy-efficient way to cool rooms without ductwork? Ductless mini-split systems offer flexible comfort with zoned temperature control and easy installation.

Learn about ductless systems

A technician stands close to an air conditioning unit,

Zone Control System

Take control of your home’s comfort with a zone control system that lets you adjust temperatures room by room. Zone control systems not only enhance your comfort, but also help you save on your energy bills. Discover the benefits of zone control

Discover the benefits of zone control

HVAC Maintenance Program

Keep your cooling system performing its best year after year with Deljo’s preventative maintenance program. Members enjoy priority scheduling, special discounts, and peace of mind knowing their system is in expert hands.

Join our maintenance program

Stay Cool & Safe With Quality Cooling Products

Learn More Call 773-829-4295

Why Choose Deljo Heating & Cooling?

For over 100 years, Deljo has been one of the most trusted names in Chicago air conditioning service. Our licensed technicians always provide honest recommendations, fair pricing, and professional service. We take pride in doing every job right the first time.

Schedule Cooling Services Today

When you need help with cooling in Chicago, we're here to help. Call us today at 773-888-4229 for more information or to schedule same-day heater service. Our technicians will identify and address the root cause of your cooling issues.

Call Now 773-829-4295 Schedule Your Service

Learn More About Your Homes Heating & Cooling

Frequently Asked Questions

When Do I Need To Repair My AC System?: When it is time to have air conditioner repairs done, you will probably notice some of the following signs: No cool air coming out of the vents, weakened air flow, or issues with moisture. For example, If you start to notice there is moisture forming around your air conditioning unit, you may be dealing with a refrigerant problem. When refrigerant leaks out of your HVAC unit, it will produce a lot of moisture. Our experienced technicians will be able to find and fix the refrigerant leak in a hurry.
How Can I Extend The Life Of My AC System?: Here are just a few of the ways the AC service we provide will protect and extend the life of your system: Check discharge pressure, Check amp draws on all electric motors, Calibrate thermostat, Measure refrigerant charge, Clean or replace the filter, Check and tighten all electrical connections, Lubricate motors, Clean condenser coil and condensate drain line, and Check overall system operation.

Schedule Cooling Services in Chicago, IL Today

Client Testimonials

Read the opinions of our satisfied customers.

Call Now 773-829-4295 Schedule Your Service

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

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

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

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

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

Recommended Blog Posts

May 7, 2026 HVAC

The Importance of Whole-Home Drain Cleaning

Many homeowners follow an "out of sight, out of mind" philosophy when it comes to their plumbing. If the water vanishes down...

April 14, 2026

Deljo Hits the Tracks: Our New Metra Train Wrap

For over 103 years, Deljo Heating, Cooling & Plumbing has been a fixture in the lives of Chicagoans. We’ve been in your...

January 16, 2026 HVAC

How to Drain Your Water Heater (And When You Should Call a Pro)

If your water heater has started making loud popping or rumbling noises, you are likely hearing the sound of steam bubbles escaping...

img:is([sizes=auto i],[sizes^="auto," i]){contain-intrinsic-size:3000px 1500px}:root{--wp-block-synced-color:#7a00df;--wp-block-synced-color--rgb:122,0,223;--wp-bound-block-color:var(--wp-block-synced-color);--wp-editor-canvas-background:#ddd;--wp-admin-theme-color:#007cba;--wp-admin-theme-color--rgb:0,124,186;--wp-admin-theme-color-darker-10:#006ba1;--wp-admin-theme-color-darker-10--rgb:0,107,160.5;--wp-admin-theme-color-darker-20:#005a87;--wp-admin-theme-color-darker-20--rgb:0,90,135;--wp-admin-border-width-focus:2px}@media (min-resolution:192dpi){:root{--wp-admin-border-width-focus:1.5px}}.wp-element-button{cursor:pointer}:root .has-very-light-gray-background-color{background-color:#eee}:root .has-very-dark-gray-background-color{background-color:#313131}:root .has-very-light-gray-color{color:#eee}:root .has-very-dark-gray-color{color:#313131}:root .has-vivid-green-cyan-to-vivid-cyan-blue-gradient-background{background:linear-gradient(135deg,#00d084,#0693e3)}:root .has-purple-crush-gradient-background{background:linear-gradient(135deg,#34e2e4,#4721fb 50%,#ab1dfe)}:root .has-hazy-dawn-gradient-background{background:linear-gradient(135deg,#faaca8,#dad0ec)}:root .has-subdued-olive-gradient-background{background:linear-gradient(135deg,#fafae1,#67a671)}:root .has-atomic-cream-gradient-background{background:linear-gradient(135deg,#fdd79a,#004a59)}:root .has-nightshade-gradient-background{background:linear-gradient(135deg,#330968,#31cdcf)}:root .has-midnight-gradient-background{background:linear-gradient(135deg,#020381,#2874fc)}:root{--wp--preset--font-size--normal:16px;--wp--preset--font-size--huge:42px}.has-regular-font-size{font-size:1em}.has-larger-font-size{font-size:2.625em}.has-normal-font-size{font-size:var(--wp--preset--font-size--normal)}.has-huge-font-size{font-size:var(--wp--preset--font-size--huge)}.has-text-align-center{text-align:center}.has-text-align-left{text-align:left}.has-text-align-right{text-align:right}.has-fit-text{white-space:nowrap !important}#end-resizable-editor-section{display:none}.aligncenter{clear:both}.items-justified-left{justify-content:flex-start}.items-justified-center{justify-content:center}.items-justified-right{justify-content:flex-end}.items-justified-space-between{justify-content:space-between}.screen-reader-text{border:0;clip-path:inset(50%);height:1px;margin:-1px;overflow:hidden;padding:0;position:absolute;width:1px;word-wrap:normal !important}.screen-reader-text:focus{background-color:#ddd;clip-path:none;color:#444;display:block;font-size:1em;height:auto;left:5px;line-height:normal;padding:15px 23px 14px;text-decoration:none;top:5px;width:auto;z-index:100000}html :where(.has-border-color){border-style:solid}html :where([style*=border-top-color]){border-top-style:solid}html :where([style*=border-right-color]){border-right-style:solid}html :where([style*=border-bottom-color]){border-bottom-style:solid}html :where([style*=border-left-color]){border-left-style:solid}html :where([style*=border-width]){border-style:solid}html :where([style*=border-top-width]){border-top-style:solid}html :where([style*=border-right-width]){border-right-style:solid}html :where([style*=border-bottom-width]){border-bottom-style:solid}html :where([style*=border-left-width]){border-left-style:solid}html :where(img[class*=wp-image-]){height:auto;max-width:100%}:where(figure){margin:0 0 1em}html :where(.is-position-sticky){--wp-admin--admin-bar--position-offset:var(--wp-admin--admin-bar--height,0px)}@media screen and (max-width:600px){html :where(.is-position-sticky){--wp-admin--admin-bar--position-offset:0px}}.wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none}:root{--wp--preset--aspect-ratio--square:1;--wp--preset--aspect-ratio--4-3:4/3;--wp--preset--aspect-ratio--3-4:3/4;--wp--preset--aspect-ratio--3-2:3/2;--wp--preset--aspect-ratio--2-3:2/3;--wp--preset--aspect-ratio--16-9:16/9;--wp--preset--aspect-ratio--9-16:9/16;--wp--preset--color--black:#000;--wp--preset--color--cyan-bluish-gray:#abb8c3;--wp--preset--color--white:#fff;--wp--preset--color--pale-pink:#f78da7;--wp--preset--color--vivid-red:#cf2e2e;--wp--preset--color--luminous-vivid-orange:#ff6900;--wp--preset--color--luminous-vivid-amber:#fcb900;--wp--preset--color--light-green-cyan:#7bdcb5;--wp--preset--color--vivid-green-cyan:#00d084;--wp--preset--color--pale-cyan-blue:#8ed1fc;--wp--preset--color--vivid-cyan-blue:#0693e3;--wp--preset--color--vivid-purple:#9b51e0;--wp--preset--gradient--vivid-cyan-blue-to-vivid-purple:linear-gradient(135deg,#0693e3 0%,#9b51e0 100%);--wp--preset--gradient--light-green-cyan-to-vivid-green-cyan:linear-gradient(135deg,#7adcb4 0%,#00d082 100%);--wp--preset--gradient--luminous-vivid-amber-to-luminous-vivid-orange:linear-gradient(135deg,#fcb900 0%,#ff6900 100%);--wp--preset--gradient--luminous-vivid-orange-to-vivid-red:linear-gradient(135deg,#ff6900 0%,#cf2e2e 100%);--wp--preset--gradient--very-light-gray-to-cyan-bluish-gray:linear-gradient(135deg,#eee 0%,#a9b8c3 100%);--wp--preset--gradient--cool-to-warm-spectrum:linear-gradient(135deg,#4aeadc 0%,#9778d1 20%,#cf2aba 40%,#ee2c82 60%,#fb6962 80%,#fef84c 100%);--wp--preset--gradient--blush-light-purple:linear-gradient(135deg,#ffceec 0%,#9896f0 100%);--wp--preset--gradient--blush-bordeaux:linear-gradient(135deg,#fecda5 0%,#fe2d2d 50%,#6b003e 100%);--wp--preset--gradient--luminous-dusk:linear-gradient(135deg,#ffcb70 0%,#c751c0 50%,#4158d0 100%);--wp--preset--gradient--pale-ocean:linear-gradient(135deg,#fff5cb 0%,#b6e3d4 50%,#33a7b5 100%);--wp--preset--gradient--electric-grass:linear-gradient(135deg,#caf880 0%,#71ce7e 100%);--wp--preset--gradient--midnight:linear-gradient(135deg,#020381 0%,#2874fc 100%);--wp--preset--font-size--small:13px;--wp--preset--font-size--medium:20px;--wp--preset--font-size--large:36px;--wp--preset--font-size--x-large:42px;--wp--preset--spacing--20:.44rem;--wp--preset--spacing--30:.67rem;--wp--preset--spacing--40:1rem;--wp--preset--spacing--50:1.5rem;--wp--preset--spacing--60:2.25rem;--wp--preset--spacing--70:3.38rem;--wp--preset--spacing--80:5.06rem;--wp--preset--shadow--natural:6px 6px 9px rgba(0,0,0,.2);--wp--preset--shadow--deep:12px 12px 50px rgba(0,0,0,.4);--wp--preset--shadow--sharp:6px 6px 0px rgba(0,0,0,.2);--wp--preset--shadow--outlined:6px 6px 0px -3px #fff,6px 6px #000;--wp--preset--shadow--crisp:6px 6px 0px #000}:where(.is-layout-flex){gap:.5em}:where(.is-layout-grid){gap:.5em}body .is-layout-flex{display:flex}.is-layout-flex{flex-wrap:wrap;align-items:center}.is-layout-flex>:is(*, div){margin:0}body .is-layout-grid{display:grid}.is-layout-grid>:is(*, div){margin:0}:where(.wp-block-columns.is-layout-flex){gap:2em}:where(.wp-block-columns.is-layout-grid){gap:2em}:where(.wp-block-post-template.is-layout-flex){gap:1.25em}:where(.wp-block-post-template.is-layout-grid){gap:1.25em}.has-black-color{color:var(--wp--preset--color--black) !important}.has-cyan-bluish-gray-color{color:var(--wp--preset--color--cyan-bluish-gray) !important}.has-white-color{color:var(--wp--preset--color--white) !important}.has-pale-pink-color{color:var(--wp--preset--color--pale-pink) !important}.has-vivid-red-color{color:var(--wp--preset--color--vivid-red) !important}.has-luminous-vivid-orange-color{color:var(--wp--preset--color--luminous-vivid-orange) !important}.has-luminous-vivid-amber-color{color:var(--wp--preset--color--luminous-vivid-amber) !important}.has-light-green-cyan-color{color:var(--wp--preset--color--light-green-cyan) !important}.has-vivid-green-cyan-color{color:var(--wp--preset--color--vivid-green-cyan) !important}.has-pale-cyan-blue-color{color:var(--wp--preset--color--pale-cyan-blue) !important}.has-vivid-cyan-blue-color{color:var(--wp--preset--color--vivid-cyan-blue) !important}.has-vivid-purple-color{color:var(--wp--preset--color--vivid-purple) !important}.has-black-background-color{background-color:var(--wp--preset--color--black) !important}.has-cyan-bluish-gray-background-color{background-color:var(--wp--preset--color--cyan-bluish-gray) !important}.has-white-background-color{background-color:var(--wp--preset--color--white) !important}.has-pale-pink-background-color{background-color:var(--wp--preset--color--pale-pink) !important}.has-vivid-red-background-color{background-color:var(--wp--preset--color--vivid-red) !important}.has-luminous-vivid-orange-background-color{background-color:var(--wp--preset--color--luminous-vivid-orange) !important}.has-luminous-vivid-amber-background-color{background-color:var(--wp--preset--color--luminous-vivid-amber) !important}.has-light-green-cyan-background-color{background-color:var(--wp--preset--color--light-green-cyan) !important}.has-vivid-green-cyan-background-color{background-color:var(--wp--preset--color--vivid-green-cyan) !important}.has-pale-cyan-blue-background-color{background-color:var(--wp--preset--color--pale-cyan-blue) !important}.has-vivid-cyan-blue-background-color{background-color:var(--wp--preset--color--vivid-cyan-blue) !important}.has-vivid-purple-background-color{background-color:var(--wp--preset--color--vivid-purple) !important}.has-black-border-color{border-color:var(--wp--preset--color--black) !important}.has-cyan-bluish-gray-border-color{border-color:var(--wp--preset--color--cyan-bluish-gray) !important}.has-white-border-color{border-color:var(--wp--preset--color--white) !important}.has-pale-pink-border-color{border-color:var(--wp--preset--color--pale-pink) !important}.has-vivid-red-border-color{border-color:var(--wp--preset--color--vivid-red) !important}.has-luminous-vivid-orange-border-color{border-color:var(--wp--preset--color--luminous-vivid-orange) !important}.has-luminous-vivid-amber-border-color{border-color:var(--wp--preset--color--luminous-vivid-amber) !important}.has-light-green-cyan-border-color{border-color:var(--wp--preset--color--light-green-cyan) !important}.has-vivid-green-cyan-border-color{border-color:var(--wp--preset--color--vivid-green-cyan) !important}.has-pale-cyan-blue-border-color{border-color:var(--wp--preset--color--pale-cyan-blue) !important}.has-vivid-cyan-blue-border-color{border-color:var(--wp--preset--color--vivid-cyan-blue) !important}.has-vivid-purple-border-color{border-color:var(--wp--preset--color--vivid-purple) !important}.has-vivid-cyan-blue-to-vivid-purple-gradient-background{background:var(--wp--preset--gradient--vivid-cyan-blue-to-vivid-purple) !important}.has-light-green-cyan-to-vivid-green-cyan-gradient-background{background:var(--wp--preset--gradient--light-green-cyan-to-vivid-green-cyan) !important}.has-luminous-vivid-amber-to-luminous-vivid-orange-gradient-background{background:var(--wp--preset--gradient--luminous-vivid-amber-to-luminous-vivid-orange) !important}.has-luminous-vivid-orange-to-vivid-red-gradient-background{background:var(--wp--preset--gradient--luminous-vivid-orange-to-vivid-red) !important}.has-very-light-gray-to-cyan-bluish-gray-gradient-background{background:var(--wp--preset--gradient--very-light-gray-to-cyan-bluish-gray) !important}.has-cool-to-warm-spectrum-gradient-background{background:var(--wp--preset--gradient--cool-to-warm-spectrum) !important}.has-blush-light-purple-gradient-background{background:var(--wp--preset--gradient--blush-light-purple) !important}.has-blush-bordeaux-gradient-background{background:var(--wp--preset--gradient--blush-bordeaux) !important}.has-luminous-dusk-gradient-background{background:var(--wp--preset--gradient--luminous-dusk) !important}.has-pale-ocean-gradient-background{background:var(--wp--preset--gradient--pale-ocean) !important}.has-electric-grass-gradient-background{background:var(--wp--preset--gradient--electric-grass) !important}.has-midnight-gradient-background{background:var(--wp--preset--gradient--midnight) !important}.has-small-font-size{font-size:var(--wp--preset--font-size--small) !important}.has-medium-font-size{font-size:var(--wp--preset--font-size--medium) !important}.has-large-font-size{font-size:var(--wp--preset--font-size--large) !important}.has-x-large-font-size{font-size:var(--wp--preset--font-size--x-large) !important}h4.inr-lstng,h3.inr-lstng{padding:0;font-weight:normal;margin:0}.faq-text details{background-color:#f7f7f7}.faq-text summary{padding:14px 20px;background-color:#0068b9;color:#fff;font-size:18px;border-bottom:2px solid #fff}.faq-text details p{font-size:18px;line-height:30px;padding:14px 18px}@media (max-width: 1399px){.entry-content h1,.entry-content h2,h2.post-title{font-size:28px;line-height:38px}}@media (max-width: 575px){.entry-content h1,.entry-content h2,h2.post-title{font-size:24px;line-height:30px}}#contact-intro .box:first-of-type,#contact-intro .box{padding-left:20px}#sidebar-area .questions div.noh3{font-size:50px;font-weight:200;color:var(--blue);text-align:center;line-height:.75}#sidebar-area .questions div.noh3 span{font-size:30px;font-weight:500;color:var(--navy)}.page-id-841 #page-wrapper .page-title{font-size:48px}#hero-sub h3.hx_h1_h3,#hero-sub .hx_h1_h3{color:#fff;font-size:80px;font-weight:600;line-height:100%;letter-spacing:-.5px;padding:0;margin:0;padding-bottom:20px;text-transform:none}#recent-posts h3.hx_h1_h3_res,#recent-posts h2.hx_h1_h3_res{font-size:50px;font-weight:200;color:var(--blue);text-transform:none}h1.post-title{color:var(--blue);font-size:28px;font-weight:400;line-height:1.4;letter-spacing:-.1px}.custom_hx_h3{font-weight:400 !important}@media (max-width: 1499px){#hero-sub h3.hx_h1_h3,#hero-sub .hx_h1_h3{font-size:74px}}@media (max-width: 1399px){#hero-sub h3.hx_h1_h3,#hero-sub .hx_h1_h3{font-size:68px}h1.post-title{font-size:32px;line-height:38px}}@media (max-width: 1199px){.page-id-841 #page-wrapper .page-title{font-size:38px}}@media (max-width: 767px){#recent-posts h3.hx_h1_h3_res,#recent-posts h2.hx_h1_h3_res{font-size:30px}h1.post-title{font-size:27px;line-height:33px}#post-203 .entry-content p,#post-203 .entry-content ul li,#post-135 .entry-content p,#post-135 .entry-content ul li,#post-37 .entry-content p,#post-37 .entry-content ul li{font-size:17px;line-height:32px}}@media (max-width: 575px){h1.post-title{font-size:24px;line-height:30px}.page-id-841 #page-wrapper .page-title{font-size:25px}#post-203 .entry-content p,#post-203 .entry-content ul li,#post-135 .entry-content p,#post-135 .entry-content ul li,#post-37 .entry-content p,#post-37 .entry-content ul li{font-size:17px;line-height:32px}}@media screen and (max-width: 575px){#post-135 .entry-content p{font-size:17px;word-spacing:2px;line-height:32px}}.page-id-2449 #infuse-cta-button{display:none !important}.multi-column-list{max-height:330px !important}#page-wrapper .page-title{width:70%}@media (max-width: 767px){#page-wrapper .page-title{width:100%}}@media (max-width: 1499px){.button{padding:12px 12px;font-size:14px}}

24/7 emergency support and flexible financing

Cooling

Questions About Your A/C? Contact Us Today!

AC Services

Air Conditioning Repair

Air Conditioning Installation & Replacement

Preventative AC Service & Tune-Ups

24/7 Emergency Cooling Service

Ductless Systems

Zone Control System

HVAC Maintenance Program

Stay Cool & Safe With Quality Cooling Products

Why Choose Deljo Heating & Cooling?

Schedule Cooling Services Today

Learn More About Your Homes Heating & Cooling

Frequently Asked Questions

When Do I Need To Repair My AC System?

How Can I Extend The Life Of My AC System?

Schedule Cooling Services in Chicago, IL Today

Client Testimonials

Recommended Blog Posts

The Importance of Whole-Home Drain Cleaning

Deljo Hits the Tracks: Our New Metra Train Wrap

How to Drain Your Water Heater (And When You Should Call a Pro)