Heating or plumbing emergency? We’ve got you covered!

Emergency HVAC Services: 24/7 Response for AC & Heating Repairs

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HVAC systems have a tendency to act in unpredictable ways at the worst possible times. Unfortunately, heating and cooling systems aren’t familiar with the concept of business hours. And if your furnace or AC breaks down when the weather’s at its worst, it can literally be a life or death situation. That’s why we offer 24/7 live call support and priority emergency HVAC dispatch in Chicago.

When the weather outside is frightful, other companies might take days or even weeks just to come to assess your problem. But thanks to our emergency HVAC services in Chicago, IL, help will be there before you know it. At Deljo Heating, Cooling & Plumbing, we make sure that our HVAC technicians are available when you need us the most. That’s The Deljo Difference.

We’re always happy to help with emergency furnace repair or emergency air conditioning service when we’re needed. That said, we always encourage customers to schedule regular preventative maintenance to keep their systems running the way they should. Once you’ve woken up without heat in the middle of winter, the importance of HVAC maintenance usually clicks.

If you need emergency air conditioner repair or heating service, Deljo is the only name you need to know. Whether you’ve diligently maintained your systems or are facing an unexpected breakdown, our emergency team is on standby 24/7 to answer your call and prioritize your service request. When we’re done, you can rest assured your HVAC system will work the way it was intended to when you need it most. We guarantee it!

24/7 Emergency AC Repair in Chicago

Chicago is better known for its frigid winters than its sweltering summers. But when a heatwave hits, the humidity can make your house feel like a sweat lodge, or worse. If you’ve been here as long as we have, you’ll no doubt remember the 1995 heatwave that claimed over 700 lives. Our emergency AC repair services can make sure that never happens to you.

If your AC won’t turn on, or worse, it’s blowing hot air, call Deljo for emergency air conditioning repair. We’ll send an experienced air conditioner technician to your Chicago home the same day. Once there, our technician will diagnose the problem and get to work solving it. And in the vast majority of cases, we’ll have you up and running again before we leave.

When you call Deljo for emergency AC repair in Chicago, we’ll be knocking on your door in no time. But if the temperatures outside have reached the triple digits, it might be a good idea to wait with a neighbor. At those temps, heatstroke can come on quickly, so it’s always best to play it safe. Just let us know if you do so we can let you know when we’re getting close.

We pride ourselves on the speed with which we answer and resolve emergency AC service calls. So before long, you’ll be relaxing in the cool breeze of your fully functional air conditioning system.

24/7 Live Emergency Furnace Support & Priority Repair in Chicago

When winter is breathing down our necks in the Chicagoland area, it’s comforting to know that Deljo Heating, Cooling & Plumbing can provide the most technically advanced, comprehensive emergency furnace repair so you can trust your heater will work the way it was intended after something goes wrong. It’s important to call us at the first sign of trouble so we can take care of the problem before it becomes more serious.

If your furnace is causing any of the following issues, you may need furnace repair:

  • Your energy bills have increased
  • Your home is unevenly heated
  • Strange or loud noises are coming from your vents
  • Air from the vents is cold, rather than warm
  • Your furnace is turning on and off often
  • The blower fan is constantly running

Stay warm this winter with Deljo Heating, Cooling & Plumbing. Our 24/7 emergency call intake ensures fast priority repair dispatch across the Chicagoland area.

24/7 Live Emergency Heat Pump Support & Priority Repair in Chicago

The professional team at Deljo Heating, Cooling & Plumbing has many years of experience with all types of heat pump repairs and the tools necessary to get the job done right. Many homeowners don’t even give their heat pump a second thought, but it’s essential to pay attention to all aspects of your system. The heat pump, like your furnace, often shows signs of a problem to help you determine when you need emergency HVAC repair, such as:

  • Rising energy bills
  • It turns on and off often
  • The system fails to respond to drastic temperature changes
  • You experience inconsistency in your heating or cooling
  • Loud or odd noises

Chicago winters demand reliable heat. When your system breaks down unexpectedly, our 24/7 emergency phone answering ensures your call is taken immediately for fast priority scheduling. While routine maintenance is the best defense against unexpected repairs, our team is always on standby to answer your call and dispatch an expert technician to restore your comfort.

You don’t have to wait for a small problem with your furnace or heat pump to turn into a disaster. Efficient, affordable HVAC repair in Chicagoland begins with a call to Deljo Heating, Cooling & Plumbing. If your HVAC system isn’t working the way it should, you can’t afford to put off needed repairs. Too often, small problems turn into major issues if not quickly and properly addressed, so don’t delay. Call us any time at 773-829-4295 for a no-obligation estimate and let us show you how quickly we can bring comfort back to your home.


5 Signs Your Heat Pump Needs To Be Fixed

When it comes to your home’s HVAC operations, your heat pump has an important role to play throughout the year. Its problems are addressed as soon as possible. Here are a few signs every homeowner should look out for:

  1. Odd Noises – This includes banging, whistling and screeching noises coming from your home’s vents.
  2. Skyrocketing Energy Bills – Leaks, clogged air filters, and low refrigerant can cause the heat pump to work twice as hard to heat or cool your home. Hire an HVAC professional to address these issues with your heat pump.

  3.  Burning, Musty Or Rotting Smells – If you detect a strong burning odor and it lasts for more than a day, then something might be wrong with your heat pump. It’s also possible for animals, mold and other debris to seep into your heat pump, causing putrid odors to emit from your home’s ventilation system.

  4.  Your Home Isn’t Being Heated Or Kept Cool – Is your home still not warming up after you’ve turned the thermostat up several degrees? It could be that your heat pump is no longer producing warm air for your HVAC system.

  5. Lack Of Air Flow – Air should be flowing through your system’s vents as long as your HVAC system and its air filters are clean and clear. If your HVAC is on but no air is flowing from the vents, then it’s time to call for repairs.


Call Deljo For 24/7 Emergency Support & Priority Repair Dispatch

When part of your HVAC system breaks down, it always happens during the most inconvenient time. Instead of waiting days for a repair team to bring your system back online, contact Deljo’s Emergency HVAC Repair Team. We’ll make sure your system returns to working order as soon as possible.

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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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