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


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


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


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

Chicago, with its wide-ranging seasonal climate, demands the diligent maintenance of HVAC systems to ensure year-round comfort. As the leading HVAC maintenance company in Chicago, A Custom Services understands the importance of regular upkeep. Our commitment is to ensure homes and businesses maintain a consistent indoor environment regardless of the Windy City’s weather.

We utilize a preventive and diagnostic maintenance process to provide solutions tailored to the unique demands of Chicago’s climate. Ready to ensure the longevity of your HVAC system? Contact our team today.

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 Maintenance Company in Chicago Apart

Experience & Expertise

Our certified professionals excel in HVAC maintenance. Having worked with various systems in Chicago, we know the nuances of keeping them running efficiently.

Customer-Centric Approach

We understand regular maintenance means fewer disruptions for you. That’s why we schedule timely check-ups at your convenience, ensuring your HVAC system runs smoothly.

Transparent Pricing

With A Custom Services, you always know what you’re paying for. Our transparent pricing ensures no hidden costs in our maintenance services.

Commitment to Chicago

Deeply embedded in the Chicago community, we understand the importance of a well-maintained HVAC system in our unpredictable climate.

HVAC Maintenance Services in Chicago

Regular maintenance is the key to the longevity and efficiency of any HVAC system. At A Custom Services, we provide a comprehensive range of maintenance services tailored for Chicago residents:

Regular Diagnostic Checks

Routine check-ups ensure the early detection of potential issues. Our team uses advanced diagnostic tools to identify and rectify problems before they escalate.

System Cleaning and Tuning

A well-tuned HVAC system is efficient. Our HVAC maintenance contractors in Chicago clean and adjust components, ensuring optimal performance and energy efficiency.

Refrigerant Level Monitoring

Maintaining the correct refrigerant level is crucial. We check and refill, ensuring the system cools effectively.

Ductwork Inspection and Cleaning

Ensuring your ducts are clean and leak-free is essential for optimal airflow and efficiency. Our HVAC maintenance company in Chicago is trained to detect and fix any ductwork anomalies.

Filter Replacements

Regular filter changes ensure clean air and efficient system performance. We recommend and replace filters based on your specific system and needs.

24/7 Emergency Support

Our commitment doesn’t end with a maintenance check. Our team is always ready to assist if any issues arise between scheduled visits.

The Importance of Regular HVAC Maintenance

Maintenance is more than a routine check of your HVAC system. It ensures longevity, reduces energy bills, and provides consistent indoor comfort. Skipping maintenance can lead to decreased efficiency, increased utility bills, and more frequent breakdowns. By choosing a trusted HVAC contractor in Chicago like A Custom Services, you’re investing in the health of your HVAC unit.

Consistent HVAC maintenance is an investment in sustained comfort and cost savings. For residents of Chicago, where the climate poses unique challenges to HVAC systems, regular maintenance offers several advantages. 

By prioritizing HVAC maintenance, you’re promoting better indoor air quality. A clean and well-functioning HVAC system reduces allergens and pollutants in the air, making for a healthier living or working environment. By investing in regular HVAC maintenance in Chicago with A Custom Services, you’re choosing a healthier and more comfortable indoor experience.

Choose A Custom Services for Your HVAC Maintenance Needs

When it comes to HVAC maintenance in Chicago, A Custom Services offers unmatched expertise, dedication, and service quality. Schedule now to ensure your HVAC system operates at peak performance year-round. Contact the most trusted HVAC maintenance contractor in Chicago to schedule your next maintenance visit.