Auction Benefit for Mari

Mari is a 12-year-old local girl who was diagnosed with cancer of the blood. We at Great Lakes are hosting this auction to benefit Mari and her family who have had to stop working to take care of her. 100% of the money raised will go to support Mari and her family. We hope you will share this with friends, family, and neighbors.

Make A Donation
Children Holiday Groupshot

Virtual Appointment

Schedule a virtual appointment with a Certified Technician or HVAC Replacement Specialist, anytime…anywhere!

You’ll quickly be able to determine if your concerns can be solved virtually or you’ll really need an in person visit.

Hassle free experience, saves you time & money!

Schedule A Virtual Service Today

What Your Neighbors Are Saying…


Great Job

Dan did the most complete, professional inspection and cleaning ever. We appreciate his quality service.

South Bend, IN


Spot On!

Our technician was on time, professional, respectful, polite, knowledgeable and made reasonable suggestions. Pretty much a standard that every contractor should take note of in their business. Highly recommend.

Niles, MI


New Furnace / AC Unit

Tony and Larry did a fantastic job on the entire install. They showed up on time and did fantastic work with great eye for detailed work. I would recommend Great Lakes to anyone looking for a new furnace!

Mishawaka, IN

Having Trouble?

Looking to fix it yourself? Check out our handy troubleshooter and see what you can do to fix your HVAC problem.

Need to talk with a professional?

Give us a call: (574) 287-5046

Experience Our Exceptional Service Today

For your benefit and convenience we offer comprehensive service and service plans, air duct cleaning, in addition to a new state-of-the-art showroom. When selecting something as important as your family’s heating or air conditioning needs, we invite you to try it before you buy it. Since typically these units can last up to 20 plus years. You owe it to yourself to stop by in person and try it before you buy it. Simply fill out our appointment form to schedule a visit.

Great Lakes Heating and Air Conditioning employs our own installation crews and factory-trained service technicians. Our company is licensed, bonded and insured. We offer 24-hour emergency service. During working hours our courteous and friendly office staff will respond to your needs. After hours we employ an answering service so you can still talk to an actual person

Serving Michiana With Traditional Values

We keep a record of every review we receive from every city in our service area to show the Michiana area that the appreciation goes both ways! Five star service for a five star community.

Air filters delivered when it’s time to change them.

Change your filters on time, every time. No hassles, just fresh air.