Connect with Top-Rated HVAC Contractors in Lowell!

Gray's Total Green Energy Solutions, LLC is a family-owned and operated business that offers professional heating and cooling installation, maintenance, and repair services to homes and businesses in Northwestern Indiana and the Chicago Metro area. With over 50 years of experience, our team of experts provides top-notch services to ensure your comfort, health, and safety. From air conditioning and gas furnaces to generators and geothermal systems, we offer a range of products and services to meet your unique needs. Our goal is to deliver peace of mind with every service call and provide exceptional customer satisfaction. We're Your Hometown Heating and Cooling Experts.

At KNZ Heating & Cooling, we understand that a malfunctioning HVAC system can significantly impact your safety and comfort. You can count on our family-owned heating and air conditioning company in Northwest Indiana for exceptional customer service, no matter when you need our assistance. We specialize in AC repair and installation, furnace repair and installation, HVAC maintenance, and more. Our team is dedicated to delivering top-quality services to ensure your home or office remains comfortable and safe.