Your Heating & AC Repair Specialists in the Oak Lawn Area

GMI Mechanical has qualified techs that are ready to take care of your residential and commercial HVAC repair and installation needs in and around the Orland Park and Frankfort communities.

Heating

Cooling

Generators

Commercial

Ductless

Keeping Orland Park and Oak Lawn Area Comfortable

a customer-first mindset
Fast responses
honest prices
reliable diagnoses
At GMI, we take pride in being a locally owned heating and air conditioning company. We believe in more than just heating, ventilation, and air conditioning services; we believe in building lasting relationships with our community in Orland Park and Oak Lawn area. Founded on principles of integrity, reliability and exceptional service, our commitment goes beyond providing heating and cooling services, it is about ensuring your comfort, all year long.
Reach out to us at 877.421.3220 to schedule
service
or sign up, online, for our maintenance agreements!

What Makes GMI the Best HVAC Company?

We make it our mission to leave every customer satisfied. We’ll work with you to come up with a solution to every HVAC problem you're facing. We aim to not just fix your problem, but to also exceed your expectations.
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Maybe it’s the Quality of Our Work?

Our professional technicians are all highly qualified, extremely capable, and up for the task. They’re all artists in their trade. You can expect quality work that’s done right the first time and a clean work area when they’re done. Whether it’s installations, repairs, or routine services, you’ll know that you’re getting the job done right.

Perhaps it’s Our Response Time?

When you need a repair, you don’t want to wait. You want it taken care of when you need it. You need an HVAC Company you can depend on. For all your HVAC needs, you can’t do better than GMI. That’s why we’ve become the most trusted HVAC company in Orland Park. Give us a call to talk about your HVAC needs.
GMI Mechanical has certified technicians to take care of your Air Conditioning installation near Frankfort IL.
$250 off
Generac Generator Install
This coupon entitles a homeowner to $250 off Generac Generator install performed by GMI Mechanical at their residence. Only one coupon per service address will be accepted. Not valid for commercial or rental properties. Coupon must be presented at the time of service. Payment for the balance is expected at the time of service.
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Your Mitsubishi Diamond Dealer

GMI is part of the Mitsubishi Electric Diamond Contractor® program. This multi-stage, in-depth training ensures professionals are kept up-to-date on equipment, new industry technologies and installation best practices so you can rest assured you are getting expert service from us on every HVAC job we work on.

Cities We Service

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Frequently Asked Questions

Q1

Is There Anything I Should Check Prior to Calling?

Before contacting GMI Mechanical for ac repair in the Orland Park area, go through the basics. Make sure you don’t have a dead thermostat or a tripped breaker. Then, put in a new air filter and make sure you have the system set correctly. If none of these things are to blame, reach out to us for a ac diagnostics check.
Q2

What's the Difference Between an Air Conditioner and a Heat Pump?

There's one main difference between these two pieces of cooling equipment. Unlike AC units, which need a furnace to provide year-round comfort, heat pumps can both heat and cool a home. Note, however, that they sometimes need to be paired with an electric heater in areas that see temperatures below freezing.
Q3

How Often Should I Check My Air Filters?

You'd be amazed how many HVAC problems are caused by someone forgetting to change their air filter. If you use a 1-inch disposable filter, we suggest replacing those monthly. For people with a 4-inch media filter, two changes a year is often enough.
Q4

When Should I Have My Furnace or AC Serviced?

In the Orland Park area, we recommend getting your HVAC equipment serviced before the start of each season. In other words, AC maintenance should be done at the beginning of spring, while furnace tune-ups are best done in the fall.
Q5

My AC Bills are High. Is There Something I Can Do?

Aside from replacing your air conditioner with a more efficient one, you can try installing blackout curtains, replacing old insulation, and sealing windows. Installing a ceiling or whole-house fan can also help reduce sticker shock. If you live in the Oak Lawn area, we’re happy to provide a home performance evaluation.

Frequently Asked Questions

Q1

Is There Anything I Should Check Prior to Calling?

Q2

What's the Difference Between an AC and a Heat Pump?

Q3

How Often Should I Check My Air Filters?

Q4

When Should I Have My Furnace or AC Serviced?

Q5

My AC Bills are High. Is There Something I Can Do?

Our zoning services help keep your home comfortable in Orland Park IL.
Improve your indoor air quality in Frankfort IL by having a clean Air Conditioning.
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