Since 1962, we've offered professional heating and cooling installation throughout all of Northwest Indiana.

Since 1962, we've offered professional heating and cooling installation throughout all of Northwest Indiana.

We’re Your Hometown Heating and Cooling Experts

As a family owned and operated business, Gray’s Total Green Energy Solutions, LLC, is Northwestern Indiana and the Chicago Metro’s premier Green Energy HVAC service provider. The heart and spirit of our company is all about doing the job right. But it’s so much more than just the quality of our workmanship. It’s about the comfort, health, and safety of your family. To that end we deliver peace of mind by virtue of everything we do to make the environment of your home as comfortable and healthy as it can possibly be.

Grays Team Spring 2020.
Lynn-Arrow

Here’s Lynn, stopping at nothing to make sure your heating and cooling system is in working order!

“We truly value your business and believe it should be earned the old fashioned way. We’ll be there when you need us for all your heating and cooling needs, charge you a fair and honest price and stand behind our work.”
-Lynn Gray, President

A Letter From the Owner...


My name is Lynn Gray and I am the president of Gray’s Total Green Heating and Cooling, LLC. My Dad had a HVAC business as I was growing up. I remember being in high school and going out on jobs with him as he was teaching me the trade. Back then there was only conventional means of heating and cooling—not like today where there are choices such as geothermal and solar. As the years went by my Dad retired from the business and I started my own.

We’re A Carrier Factory Authorized Dealer

From maintaining a consistent temperature, to helping keep your utility bills cheap, to cleaning and humidifying (or dehumidifying!) your air, Carrier products provide the means to fully manage your home’s heating and cooling quality, all while keeping you and your family comfortable.

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Our Customers Love Us

See what everyone's saying about Gray's!

Air Conditioner Replacement in Hebron, IN 46341

“I had to put a new fan in my central air. I called one company and all they did was give me the run around. I called Gray' s and Jennifer and Michelle were so very nice and helpful. My serviceman Jakob is the BEST!!! He explained everything to me and before he left he made sure everything was working fine. I will make sure if I have any more problems with my furnace or air I will make sure I call Gray's and I will make sure they send me Jakob!!”
- Mary S.

Gas Furnace Repair in Other, IN 46342

“Jakob is incredibly professional and knowledgeable. He makes every effort to diagnose issues correctly and resolve them in a cost effective manner. Thanks Jakob for providing us with great service!”

- Raquel-Catherine B.

Air Conditioner Repair in Lowell, IN 46356

“Jakob Pelter found the problem quickly and made repair. My wife was happy to have the a/c back on. Mr Gray is lucky to have Jake as an employee.”

- michael r.

We love hearing from our customers!
If you've had us work on your HVAC system we would love to hear from you too.

Need HVAC Service?

Contact the experts at Gray's.

Call us at 219-696-8377!

Check Out Our Latest Articles

V-AC_007-AC-Purchasing-Mistakes

Video – What Are Common Mistakes Made When Purchasing a New AC?

May 31, 2021

It’s time to replace your old or broken AC unit in your home and you don’t want anything to go wrong with the new one. Avoid the common mistakes people make when purchasing a new air conditioner and learn how to prevent them.

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ac tune-up

Do I Really Need an AC Tune-Up?

May 17, 2021

Home ownership comes with a great deal of responsibilities and an ever-growing to-do list. Add to that the responsibilities of a career and a family, and you see why modern life runs at a constant, fast pace here in St John. It’s easy to bump things like an air conditioner tune-up down the priority list, both in terms of time and money. It’s very likely you have higher priorities requiring more urgent attention than an air conditioner that seems to be working just fine.

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common ac purchasing mistakes to avoid

Common AC Purchasing Mistakes To Avoid

April 29, 2021

When it’s time to invest in a major home appliance like an air conditioner (AC), you want to be well informed. The good news is technology has made it easy to gather a great deal of information in a short period of time. The bad news is there are so many makes and models of air conditioners available, the entire process can get quickly overwhelming.

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