HVAC reviews in Chicago, Illinois

Had an excellent experience with Mark's repair of our AC unit. He communicated promptly and efficiently. He performed the repair quickly and effectively. He was friendly and professional. Best of all, he invited me over to his place for beers if I'm ever up north. Definitely recommend.

Mark is very knowledgeable and enthusiastic explaining systems to me when he came out to fix my A/C on the same day - replacing an electrical component that looked like a Coke can in my twenty year-old unit, which he already had with him in his super-equipped mechanic's van. My experience with Mark is very similar to other people who have left reviews on here, and I would have no hesitation in recommending him - as someone had recommended him to me.

Had a previous AC company come out and tell me I needed a new unit. A friend referred me to Mark - he added refrigerant and performed rigorous calibration to make sure it was the correct amount. he also educated me on how to change a fuse in the unit if it ever had the same issue so i wouldn't have to call him again. Saved me thousands on a new AC. He is extremely knowledgable and a real pro.

Mark has played a crucial role in maintaining our home’s AC and boiler systems for years. His expertise is truly impressive. What keeps us coming back is his readiness to tackle the challenges posed by our older equipment, which many repair services avoid. His transparency is refreshing, and he has a natural talent for educating his clients. He explains his reasoning clearly, which always puts us at ease. Honestly, I can't imagine trusting anyone else. Highly recommended.

Excellent service, I recommend it 100 percent, since they cleaned my boiler because the ignition wasn't working. Now it works wonderfully.

Very impressed with their work. Professional, efficient, solutions-oriented. Will definitely work with again. Highly recommend!

Really nice work. Very professional.

Always great!

Very prompt and reliable! Great products as well! Ask for Dave.

Rebecca in the engineering/estimating department was incredibly helpful in remote-troubleshooting an issue in our system and trying to find an appropriate solution Bornquist could supply. Thank you so much!

Finally found reliable professionals in Chicago who delivered a top-notch service.

A week ago, a technician arrived at my home for AC repair and completed the job promptly. I was pleasantly surprised by their efficiency and professionalism. The technician's positive experience left a lasting impression, leading me to recommend your services to my relatives and acquaintances. Overall, the staff were extremely courteous and assisted with a great deal of kindness.

The reviewer seems to have had a positive experience with this service provider. Their concerns were alleviated quickly by a professional who got the job done efficiently. The service was prompt and reliable, leaving a good impression. They seem to appreciate the provider's work ethic and speed, recommending them highly.

The service was excellent. The technician handled my HVAC issues professionally, demonstrating expertise in their field. Thanks to their extensive experience, all problems were resolved flawlessly on the same day. Extremely satisfied with the quality, which restored my heating system to full functionality. They've earned my loyalty as my go-to choice for future HVAC repairs.

Highly recommended for reliable furnace repairs - our issue was fixed promptly, with experts arriving quickly to get us up and running again.

Certified recently installed a new thermostat in my house, which has significantly reduced my energy costs. The technician who did the job was extremely knowledgeable and took the time to select a thermostat that will ultimately save me money. The installation process was fast and hassle-free, and I'm now enjoying a consistent temperature at home. Certified's customer service is top-notch, and I'd highly recommend them to anyone seeking HVAC services.

They finally got it right - the cooling thermostat is spot on now and my home feels consistent in temperature, which was a huge improvement.

They initially focused on precise repairs, but after that didn't work, they switched to a better system - installing a new thermostat with flawless installation and calibration. Their customer-focused approach is very good.

I'm extremely satisfied with my second mini-split installation, which delivers efficient cooling, silent operation, and consistent comfort throughout the day.

As summer arrives, I booked a seasonal AC installation to guarantee my home stays cool. The technician arrived prepared and ensured the system was working correctly. Thankfully, the new setup provides consistent comfort even on scorching hot days.

Inefficient customer service.