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Since 1962, we've offered professional air conditioning installation throughout all of Northwest Indiana

  • Heating Maintenance

    Let Gray’s Total Green Energy Solutions, LLC protect your comfort, safety, and budget with proactive HVAC maintenance in Northwest Indiana.

  • Heating Repair

    Gray's Total Green Energy Solutions, LLC simplifies the repair process through same-day service, upfront pricing and written estimates.

  • Heating Installation

    Living in Northwest Indiana, you can’t take chances with your winter comfort. We offer only the best in heating installation!

  • Generators

    A sudden power failure doesn’t need to disrupt your routine or cause damage. Gray’s helps to protect you with standby generator installation.

Air Conditioning Repair, Furnace Installation, HVAC Repair, AC Service & Heating ServiceSt. John, IN, Cedar Lake, IN, DeMotte, IN, Lowell, IN, Lake County & Crown Point, IN

furnace services

Your Local HVAC Pros

Gray's Total Green Energy Solutions, LLC are your Hometown Professionals in Northwest Indiana.  Family owned and operated for 56 years, we provide our friends and neighbors trustworthy, timely, and affordable solutions to everyday challenges.  Our NATE-certified, fully licensed, and insured team of specialists are qualified in heating/cooling installation, retrofit, seasonal maintenance, and repair, including geothermal units and boilers.  We further offer a complete range of air quality services, duct cleaning, and the installation and upkeep of standby generators.  Through our dedication to quality, we make it easier to maintain a comfortable, healthy, and efficient household.

Heating Repair in DeMotte, IN | AC Service

Top Quality Heating & Cooling Services

Prioritizing environmentally responsible temperature control, Gray’s Total Green Energy Solutions, LLC offers opportunities to minimize both your budget and carbon footprint. As a Carrier Factory Authorized Dealer, our team is trained, regularly updated, and proficient in a broad selection of Energy Star rated heating, cooling, and air quality options. We adhere to proven procedures to optimize sustainable performance, and recycle ozone-depleting refrigerants. Contact Gray’s Total Green Energy Solutions, LLC at 219.696.8377 for convenient scheduling and expert service throughout Lowell, Crown Point, Cedar Lake, St. John & DeMotte, IN. We remain on-call to handle emergencies 24 hours a day, 365 days a year.

Call our team for all your HVAC repair, maintenance, and installation needs!

The Hometown Professionals from Gray's Total Green Energy Solutions, LLC are here to earn your satisfaction.

  • Service all makes and models
  • Family owned and operated
  • 56 years experience
  • Environmentally conscious
  • Recycling of ozone-depleting refrigerants
  • 24/7 Emergency Service
  • Same-day service
  • Upfront pricing
  • Written estimates
  • Licensed
  • Insured
  • Factory-trained, NATE-certified technicians

Furnace InstallationHVAC RepairHeating Service

  • No Trip Charge With Repair

    Trip charge is waived with a repair service. Cannot be combined with any other offer.

  • Customer Referral

    Earn cash for both the new customer and you! Just have the person you refer say who referred them upon our visit and you will both receive the credit based on the service:


    Install of furnace or AC: $50

    All other Services: $25

  • $49 Off Furnace Repair

    Did your furnace break down at the worst time? Gray's Total Green Energy Solutions, LLC is offering $49 Off Your Furnace Repair for a limited time. We service all major brands and can typically offer same day service.


    Call 219.696.8377 for details!