Gremillion Mechanical is a family owned and run firm based in Chicago, Illinois. We are certified as a mechanical contractor in the state of Illinois and are completely insured. A lot of web sites would have you believe that they're contractors, but they're middle men and only increase the cost of your service. Your call for service is sent to the person pays them the most money, without your best interest in mind. You should always ask the firm you contact through the internet if they are the contractor that will perform the service you require. Would you hire a computer expert to perform dentistry on you or your family, of course not. Why hire a PC expert to perform heating repair in your home that could effect your families health in very deadly ways.

Our experience in all stages of the heating and air conditioning field has lead us to develop the best residential techniques to cost effectively service your home or office. We are experts in the repair of your home furnace and all the related subsystems involved. Gremillion Mechanical will work within youbudgetet to keep you and your loved ones warm in the cold Chicago winter. Every client we service is treated as though they are our only customer. We look for ways to save you money without sacrificing the function of the equipment or your comfort.

Serviced Areas

  • Chicago Area

Payment Options

  • American Express, Discover, MasterCard, PayPal, Personal Checks, VISA

Contact Details

  Person Brett Gremillion
  City Chicago, IL
  Zip Code 60609
  Address 3526 S. Paulina St.
  Phone Number (773) 234-4575

Business Representative

Brett Gremillion


Products & Services

A/C clean and check

Quality heating and air conditioning fixings in Chicago is hard to come by. When clients choose us they can have comfort in the fact that we provide fast, reliable, and cost effective air conditioning and heating services. Weather it is new installations, maintenance or repairs we guarantee that our work will be top notch.

A/C Installation

Air Conditioner installations in Chicago can be a tricky thing. For an air conditioning system to work properly in a house there has to be a couple of thing that line up correctly in order for everything to work correctly. A problem with most homes in Chicago is that the air conditioning system that is installed is not sized according to the home and ductwork.

Customer Testimonials

Brett came highly recommended to me by a friend. He is very knowledgeable, professional, and fair. He always looks for the less expensive, most effective option first. I had a furnace that was too big for my house, he tried to nurse it back to health after it kept short cycling to get me through the 2015 winter, when the furnace was no longer serviceable Brett replaced it at a fair price. Now that I have a fully functioning furnace we now discovered that my duct work is too small for the (poorly rehabbed) house. Brett suggested that I connect the gas line in the fire place for supplemental heat before undergoing expensive duct work reconfiguration. Brett will also try to troubleshoot over the phone before coming out. He talked me through a simple fix that others have charged 200+ to fix.

In short, Brett is my HVAC "guy."

I went on Yelp to find someone for AC repair. Brett with Gremillion Mechanical came quickly (the next day), was on time, fixed the problem with an affordable price. Very professional and easy to work with. Will use him in the future if necessary.

We've had Brett - Gremillion's owner - out to our walk-up apartment twice, once to fix our furnace, the second time (today) to fix our AC. Both times, he was able to come on short notice, was pleasant, friendly, and extremely knowledgeable, and fixed the problem quickly and at reasonable expense.

He's responsive (via text or phone), which is one of the nicest things about Brett - when you have an HVAC problem, you don't want to sit around for hours and wonder if someone is going to get back to you, or if you should try someone else.

Don't try someone else - just call Gremillion.

I've been calling on Brett for four years, usually to fix my furnace in an emergency (like last week's cold). He comes out within a day, and we're all warm and comfortable again. His rates are reasonable, and his work is guaranteed, so it's great. He teaches me, too, which I always appreciate.

From Our Website

We've gathered information on a variety of makes and models, including Lennox, Rheem, Carrier, Bryant, Goodman, and Amana.

My name is Joseph R. Lewis. I am an HVAC repair technician specializing in furnace repair. And also, I'm a writer and an author of a dozen books for kids and teenagers, which I wrote for my grandchildren. You may be surprised by this "technician and children's writer" combination. For me, it has been a perfectly natural duo, though! Since I was a boy, there were two things I loved most in my life (after chocolate cakes, of course): listening to the stories my mom read to me and working with my dad in his workshop (he was a car mechanic).