#1 HEATING INSTALLATION CONTRACTOR IN CHICAGO, IL

ALL REPAIRS GUARANTEED FOR 1 YEAR

We 100% guarantee our service hits the mark or we invite you to call the owner

UP FRONT
CONTRACT

Know the price of the repairs before any work is done

LOCALLY OWNED AND OPERATED

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

ALL TUNE UPS GUARANTEED FOR THE SEASON

If any repairs need to be made we will apply the price of the tune up to the repairs

24 HR SERVICE
AVAILABLE

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

5-Star Rated Heating & Air Conditioning Services

Excellent
Based on 54 reviews
Jay Mahlendorf
Jay Mahlendorf
2023-01-24
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
2023-01-13
Steve went above and beyond answering my questions and explaining how things worked. I really appreciated his expertise and patience.
Bill Harris
Bill Harris
2022-12-30
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
2022-11-03
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
2022-10-27
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
2022-10-25
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
2022-10-21
Always thorough and honest.
Tim Oryhon
Tim Oryhon
2022-10-18
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.

A Custom Heating and Air Conditioning is one of Chicago’s top performing Service and Repair Company and we believe “Home Owners” are tired of wasting their time with contractors who don’t show up, have to make multiple trips to get the job done, and poor quality workmanship: You shouldn’t have to wait at home all day for service.

A Custom Heating and Air Conditioning can help you save energy cost by installing a high efficiency heating system. All systems we sell are installed to factory specifications by highly trained, A Custom Heating and Air Conditioning technicians. Our service department is available to our clients 24/7. Our dedicated staff of technicians is trained to work on the systems we install and we stock the parts needed to keep your system running. A Custom Heating and Air Conditioning Installs and services all makes and models.

Boilers

Hot water boiler heating is the cleanest and most economical way to heat your home. At A Custom Heating and Air Conditioning, we specialize in hot water and steam boilers as well as cast iron and copper fin tube radiation. All of our heating technicians have been expertly trained to service and install all manufacturers’ makes and models. Give us a call to see what we can do for you.

GAS BURNING FURNACES

Gas or fuel burning furnaces all work on the same basic principle. The fuel is burned inside an enclosed metal container (generally referred to as a fire box or heat exchanger). The exhaust gases (including carbon monoxide) are vented to the exterior of the building. The burning of the fuel warms the heat exchanger. The heat exchanger, now hot, radiates the heat into the air in the living area. This heated air is circulated by gravity or pumped through the living area with a fan.

Gravity furnaces

These will usually be found in older homes. They include floor and wall furnaces and some ducted furnaces that are generally in a basement. The term gravity referrers to the fact that the furnace has no blower to move the heated air around the room. They rely on the fact that heated (less dense) air rises and the cooler (more dense) air falls to circulate the heat. This is not a very efficient way to heat a house and generally will be used as a room heater.

Electric furnaces

Not the best way to heat your home. Expensive to operate. They can make your electric meter spin like a top. They work like those old bathroom electric coil heaters except that they are enclosed in a box with a blower forcing the cold air across them heating the air for the living area.

PROFESSIONAL A/C & HEATER SERVICES WE OFFER IN THE CHICAGO AREA