Thornton Heating Service, Inc. 19083 West Casey Road, Libertyville, IL 60048

"Thank you for your and your team's professionalism and customer service. The furnace install was above and beyond expectations. The new unit is quiet and feels warmer already. My wife and I appreciated the prompt/honest and thoughtful response to our heating issue. We will recommend Thornton Heating for anyone needing HVAC care."

"Thorton Heating did a fantastic job installing my new Mitsubishi heat pump and Trane furnace. There were some minor delays in the process because of incorrect information they received from Mitsubishi about my particular setup, but they team stayed until 8pm to finish the job, which as very impressive and much appreciated. Brian answered all my questions and listened to all my concerns closely, and got my a system I'm very happy with at a reasonable price. I'm so glad I went with Thorton Heating, I would recommend them to anyone!"

"We had a Thornton crew come out to professionally clean our ducts. The crew did not communicate anything that they were doing, and I had to call to ask about some things later. To make it worse, our ducts did not pass sample testing by an independent inspector. The swab the inspector used to gather the sample came out black, and he didn’t even believe that I’d had the ducts professionally cleaned. I also contacted the company about this, and they never bothered to respond. When I first called, before I paid, the customer service was great. Good ole bait and switch here."

"We have been using Thornton Heating and cooling for at least 11+ years for our home and our rental property. As is clear when I interact with the courteous office staff as well as the knowledgeable and friendly technicians, this business clearly values customers and takes pride in providing outstanding service. Thornton people are prompt, reliable, professional—it’s a pleasure to work with them. Highly recommended."

"Thornton is a fantastic HVAC company and has been servicing my home since I moved in 3 years ago, and they have serviced it since it was built in 1997. I have an annual service plan so I never have to worry about anything going wrong because they visit quarterly and keep things in tip top shape. When something needs to be repaired or replaced they provide details, options and pricing in advance and patiently answer all of my questions. Nick, especially, goes above and beyond and his attention to my home is valued and appreciated. I highly highly highly recommend Thornton!"