We 100% guarantee our HVAC repairs in Chicago or we invite you to call the owner.


Know the price of the HVAC repair before any work is done.


A local team that is part of and invested in the Chicago community.


Our certified HVAC repair experts are here to help when you need us most.


In Chicago, HVAC systems play a vital role in maintaining the comfort of homes and offices during each season. As a premier HVAC repair company in Chicago, A Custom Services understands the dynamics of Chicago’s ever-changing climate and is committed to ensuring your heating, ventilation, and air conditioning systems are in optimal condition. 

Our process begins with a comprehensive analysis, followed by strategic repair solutions tailored to your unique needs. With a legacy rooted deep within Chicago, we offer a blend of local expertise and world-class service standards. To learn more, call our office today or contact our team online.

Jay Mahlendorf
Jay Mahlendorf
Working with A Custom Services Inc, including the engineer Steve S. and Michael in their business office, was all positive and I will happily work with them again. They understood, made helpful recommendations, communicated proactively, and they followed through as they said they would. It was a stress free experience and good value for the work.
Wendy Campnell
Wendy Campnell
Steve went above and beyond answering my questions and explaining how things worked. I really appreciated his expertise and patience.
Bill Harris
Bill Harris
Alfredo and Tom replaced our furnace and did a Fantastic Job. They were professional, courteous and very informative. They were considerate of the delivery, prepping the area to keep it clean and worked efficiently and very quickly. Alfredo is a master HVAC professional and did a great job! Tom was fantastic on the installation as well as keeping my wife and I informed of the new aspects of the furnace and thermostat. Previous to the replacement Steve responded very quickly for the no heat call and was very professional to diagnose the problem and provide multiple solutions. Steve did an excellent job with the solution write up, planning for the hardware readiness and ensured that our project was completed the next day. Michael in the main office performed all the managerial interaction very well, answered all our questions and took care of the paperwork and invoicing in a very professional manner. Highest grades for this team and I will recommend them to all our friends.
Shauna Daou
Shauna Daou
A Custom Service was amazing throughout our experience with them. When I contacted them, Michael called me back promptly and helped me in scheduling an appointment. He also called a day before the appointment as a friendly reminder and to confirm that the appointment still worked for us. Alfredo was the technician who came to our house. He was on time and walked us through everything he was checking. He also answered all of our questions and even answered some questions my neighbor had about his system! He was very thorough, knowledgeable, and professional. After the service, Michael reached out again to make sure everything worked well. We used A Custom Service to do routine maintenance on our radiant heating system, and moving forward we will be using them to address all of our HVAC needs! Job well done.
Alvaro Santana
Alvaro Santana
Contacted A Custom Service to get some work done on my boiler. Response was quick, Michael was able to help me set an appointment up and was very attentive to our communications. Alfredo, our technician, was knowledgeable with boiler systems and was able to answer my questions. Found out that a circulation pump needed to be changed and he had the part in his truck so there was no delay in getting us up and running. A Custom Services will be our go to heating service from now on.
Brennan Williams
Brennan Williams
Great crew all around, owners, office, technicians. What I most appreciate is that everyone I dealt with was polite and professional. Secondly, they are trying to solve your HVAC issues, not charge you for things you don’t need. Highly recommend.
Natalie Rodriguez
Natalie Rodriguez
Always thorough and honest.
Tim Oryhon
Tim Oryhon
Michael was very responsive with initially setting up the service technician appointment. Alfredo was very helpful and a wealth of information. Our experience with everyone at A Custom was superb.

What Sets Our HVAC Repair Company in Chicago Apart

HVAC Repair Experience & Expertise 

Our team boasts certified professionals with years of hands-on experience who have handled diverse challenges and stay up-to-date with the latest HVAC technologies.

Customer-Centric Approach 

We prioritize your comfort and satisfaction. Our reviews stand testimony to the consistent excellence we deliver.

Transparent HVAC Repair Pricing 

No hidden fees. No surprise charges. We ensure that you’re informed about the cost breakdown before we initiate any repairs.

Commitment to Chicago 

We’re deeply embedded in the Chicago community and proud to serve our neighbors.

HVAC Repair Services

Our comprehensive HVAC repair services encompass the following:

Diagnostic and Troubleshooting 

Every HVAC concern starts with understanding the source of the problem. Our skilled technicians employ state-of-the-art diagnostic tools and techniques to quickly and accurately pinpoint the issues. Then, we can provide the most effective solutions tailored to your system’s specific needs.

Repairing Heating Systems, Including Furnaces and Boilers

The bitter Chicago winters demand a perfectly running heating system. From the latest furnaces to traditional boilers, our team is proficient in repairing all types of heating equipment. We ensure your systems are optimized for peak performance to keep interiors warm and cozy.

Air Conditioning Unit Repairs and Refrigerant Refills

Chicago’s summers are equally unforgiving. Therefore, we specialize in meticulously repairing air conditioning units, ensuring they cool efficiently. Beyond just repair, we also offer refrigerant refills, ensuring your AC runs smoothly and effectively throughout the season.

Ductwork Inspection and Repair

Ducts are the circulatory system of your HVAC. If they’re compromised, the entire system suffers. Our team conducts thorough inspections to detect leaks, blockages, or any structural issues. Post-inspection, we undertake necessary repairs or replacements, ensuring efficient air distribution in every corner of your space.

Regular Maintenance Checks to Optimize Efficiency

Prevention is paramount. Recognizing this, we offer regular maintenance checks that review every aspect of your HVAC system. Our proactive approach prevents potential issues, extends the lifespan of your equipment, and ensures that the system runs at its maximum efficiency, leading to energy savings.

Emergency HVAC Repair Services Available Round-the-Clock

HVAC emergencies don’t wait for business hours, and neither do we. Understanding the discomfort and potential hazards of a malfunctioning HVAC system, we offer 24/7 emergency services. No matter when an issue arises, our dedicated team is just a call away.

Why Do HVAC Systems Break Down?

While HVAC systems are designed for durability, various factors can lead to their breakdown:

  • Neglect and Lack of Maintenance: Overlooking regular maintenance checks can lead to dust accumulation, reduced efficiency, and eventual breakdowns.
  • Component Wear-and-Tear: Belts and fans wear out over time, affecting the system’s performance.
  • Refrigerant Leaks: These can hamper the cooling process, putting undue pressure on the compressor.
  • Electrical Faults: Issues with wiring, fuses, or capacitors can cause intermittent or complete breakdowns.

Contact A Custom Services Today FOR HVAC REPAIR

With our unparalleled expertise as a leading HVAC repair contractor in Chicago, we’re here to ensure your system performs at maximum efficiency. Don’t let a faltering HVAC system disrupt your comfort. Contact the most trusted HVAC repair company in Chicago. Schedule your service today.