Get matched with top nest installation pros in Mount Prospect, IL

"Very responsive and offered options for financing. The Legendary Service Team has a thorough understanding of regulations and offers environmentally friendly suggestions for your HVAC needs. They did a furnace/AC replacement in my home. Their scehduling system texts you when they are in route to your home. The install went seamlessly. They kept all work areas covered and clean. I will use them for all future maintenance needs."

At our company, we take immense pride in our wealth of experience, expertise, and the exceptional customer service we offer to meet our clients' needs. Our mission is to consistently deliver outstanding design work and drawings, from project initiation to completion. We place great emphasis on understanding and exceeding our customers' needs and expectations, ensuring that every interaction is conducted with the utmost professionalism. Our reputation is founded on top-notch service and quality, irrespective of the size of the project. Get in touch with us today!

"I had an excellent experience with TopTec from start to finish! I first spoke with Maria in customer service—she was absolutely awesome and so helpful, along with her entire team. Buzz and Bayaraa installed my condenser, and they did an outstanding job—professional, efficient, and friendly. Everything was coordinated seamlessly, from scheduling with Jen to my conversations with Ali, Rachel, and Maria. Everyone I interacted with went above and beyond to make the process easy and stress-free. I couldn’t have asked for a better experience. Highly recommend TopTec!"

"The best! Installed my dishwasher from home depot (they kept making up new reasons they couldn't). No issues at all. Courteous. Ever so grateful. Will use again."

"Friendly, knowledgeable, and quick, same-day installation of foyer lighting fixture. Will definitely have him do any other electrical or handyman projects. Very satisfied."

"My AC ended up “dying” and needed a new one. Richard was amazing. He installed a new AC for me same day my old one went out. I would not trust anyone besides him for anything AC/heating related."

"The new furnace and A/C were installed professionally and on time."

"The service guy came out very quickly. Had a smart thermostat installed. He walked me through setting up the app. Did a fast and a great job. I highly recommend this company if you want it done and done right."

At One Hour Heating & Air Conditioning, we've been proudly serving Chicago-area communities with expert heating and cooling services for over 65 years.\n\nOur reputation is built on delivering legendary service—with every technician fully background-checked, drug-tested, and bringing at least five years of professional HVAC experience to your home.\n\nYou, the customer, are the most important part of our business, and we never forget that.\n\nBe sure to ask about our flexible financing options—we're here to keep comfort within reach.

"I hired him again to fix leaking water pipes underneath the kitchen sink"