Get matched with top geothermal heating or cooling system installers in Downers Grove, IL

"They came out when they said they would, and did a wonderful job."

"Josh was very professional throughout the installation process and ensured my tenant on-site understood the basics. In addition, Josh sent Miguel the same day to ensure the humidifier was working properly."

"Service was prompt, professional and well done."

"Dean was amazing - Very knowledgeable, detailed and provided excellent customer service. He went above and beyond and did the install same day. Highly recommend!!"

"My mother contacted Four Seasons Heating and Cooling on 01/26/2026 for a water leak. What should have been a simple service call turned into them replacing her boiler?something that was not needed. The technician arrived at 8:00 a.m. and instead of shutting the water off, allowed it to continue leaking for approximately three hours while he tried to determine ?how my mother?s credit was? so they could charge her for additional work. He even made the comment, ?Oh, there is no way you could afford this in cash,? which was extremely inappropriate and unprofessional. After being pressured into purchasing a new boiler costing nearly $17,000, her tenants were left with NO HEAT because the job was not completed correctly. A second technician had to come out to bleed the old pipes and stated that the original work was done incorrectly. I was on the phone during a call with customer service and had to take over because of how rude and disrespectful they were toward my mother. Once I took over"

"TR Miller Heating, Cooling & Plumbing I think an obvious first step for the company is to be more upfront with pricing. By offering an upfront cost of $79 to assess a plumbing issue seems reasonable. To then have a minimal price that starts at $494 for something as simple as a 45 minute repair seems very unfair. It is similar to a bait and switch--reasonable to ridiculous. I was very specific in my needs--which was to connect two 1" water pipes 4 3/8" apart. I even forwarded a pic before anyone from TR Miller came out to the residence. The explanation from the manager was inadequate and false. Manager stated pricing was based on 50% going to the technician, 40% for overhead, and 10% profit. While I have already gone through the manager's exaggerated pay rate for the technician repair at roughly $250 per hour, Glassdoor site shows a technician hourly salary ranging from $20-$33 per hour. Even at an hourly rate of $50 per hour, a 40 hour per week technician would be at an annual salary of $100k per year-- which is probably closer to reality for pricing. With inflated non-factual pricing to start for labor and then factoring your overhead and profit off of an inflated labor rate, you literally are overinflating pricing by a large margin. Very unfair for a homeowner enticed to use your service which supposedly starts at $79. Will continue to be dissatisfied with my experience with TR Miller. You are a predatory company taking advantage of people. Based on my math, you would have still had great and more fair margins for a 45 minute job charging $250 for the job."

"I had a great experience with their HVAC services. They repaired my electrical baseboard heater quickly and made sure everything was working perfectly before leaving. The team was professional, punctual, and very knowledgeable. They also installed our new central A/C system smoothly with no issues at all. Communication was clear throughout the process, and the pricing was fair. Highly satisfied with the quality of work and customer service. I would definitely recommend them for any heating or cooling needs."

"Installation was quick, complete and performed in a professional manner from start to finish!"

"Orcasitas Comfort did a phenomenal job installing my new furnace. They were knowledgeable and tentative to all of my needs. Not only that, their license and bonded and did very neat work."