GMI Mechanical Heating & Cooling
GMI Mechanical Heating & Cooling is a HVAC provider serving Oak Lawn, IL. Rated 5.0★ with 111 Google reviews. See services, review signals, and request a quote.
HVACOak Lawn, IL
On this page
Company overview
- TradeHVAC
- Service areaOak Lawn, IL
- Google rating5.0★ (111 reviews)
- Phone(877) 421-3220
- Address5516 W 110th St #7, Oak Lawn, IL 60453, USA
Photos
Photos from GMI Mechanical Heating & Cooling
What customers say
“Zero headache, quick, great FAIR pricing compared to everywhere else we’ve looked and friendly service. We needed our bypass humidifier replaced as it was never serviced by the previous homeowner. We …”
“Diego was so amazing! He knew exactly what was wrong and how to fix it. Thanks to him my home is warm and cozy! Definitely calling GMI again!!!😁”
“Wouldn’t recommend any other place! I needed to get my furnace back up and running and Esther was super helpful I always appreciate it when I can speak to someone friendly and patient as English is my…”
“I used to use King in Fankfort until they decided to no call no show when I had no heat in 30 degree weather. My Dad recommended to use GMI instead. The communication from GMI was amazing. The updates…”
“I had an issue with my radiant floors, leaking and multiple companies come out and could not pinpoint what the issue was.Finally found GMI Heating &cooling came out within 2hrs and within 5 minutes, h…”
Key highlights
Strengths
- Highly rated (5.0★ average)
- Large review volume (111 reviews)
Things to ask
- Confirm availability for your area and timeline
- Ask about warranty terms on parts and labor
- Request a written estimate before work begins
- Ask about payment plans or financing
Explore nearby research
Frequently Asked Questions
What services does GMI Mechanical Heating & Cooling offer?
GMI Mechanical Heating & Cooling provides: HVAC diagnosis, repairs, and full system installs. They serve residential and commercial customers in Oak Lawn, IL.
What is GMI Mechanical Heating & Cooling's rating?
GMI Mechanical Heating & Cooling has a 5.0 out of 5 star rating based on 111 Google reviews.
Is this company licensed in Illinois?
All listed providers have a verified Illinois contractor license at time of publication. You can verify on the Illinois Department of Financial and Professional Regulation (state business registration) plus municipal HVAC licensing (e.g. City of Chicago Department of Buildings) lookup at https://online-dfpr.micropact.com/Lookup/LicenseLookup.aspx.
Does GMI Mechanical Heating & Cooling offer emergency service?
Contact them directly to ask about emergency availability and after-hours service.
How do I request a quote?
Use the CTA below to submit your ZIP. You can message this company alongside two or three other local pros for easy comparison.
Licensing verified 2026-04-22. Reviews refreshed 2026-04-22.
Licensing data: Illinois Department of Financial and Professional Regulation (state business registration) plus municipal HVAC licensing (e.g. City of Chicago Department of Buildings) · Company data: verified business records + Google Business profile
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