HVAC reviews in Chicago, Illinois

David did an outstanding installation of a mini split last summer that still impresses me today. His pricing was significantly lower than the larger companies, and he showed up promptly and in a professional manner. When we had issues with our furnace since then, David stepped up again, providing top-notch service once more. He's now my go-to guy for any future HVAC needs - don't need to look further!

This company is handled by a very professional individual who is extremely knowledgeable and took the time to thoroughly explain everything. My husband and I were delighted with the service provided and are truly overjoyed with the results. To put it mildly, we're ecstatic - this is an understatement. We're thrilled to have found someone as skilled as him, and we're already planning to use his company again. His work exceeded our expectations in every way.

As a business owner, I've sought companies with strong values and integrity. Cosmic HVAC met my expectations and exceeded them - they checked all the right boxes without being overly expensive or cheap. The service was professional, from initial quotes to post-maintenance checks. They addressed minor issues promptly and kept me informed every step of the way.

David was great, very knowledgeable and explained things clearly - definitely recommend them.

Cosmic HVAC Inc. does the job well. Their technician, David, is a pleasure to deal with - friendly and efficient. He managed to revive my ancient air conditioning unit during this sweltering heatwave, which was a lifesaver. I'd trust them with any future maintenance or repairs.

As a realtor, I recently worked with David from Cosmic Air after a home inspection highlighted issues with my HVAC system and water heater. From our initial conversation to our final discussion, David consistently demonstrated exceptional professionalism, thoroughness, and detail. He proactively provided photos of his work and took the time to explain complex aspects of the repair process in a clear and patient manner. I was impressed by his expertise and commitment to customer satisfaction, and I plan to recommend him to my other clients as well as utilize his services personally in the future.

David is highly skilled, reliable, and thorough in his work. He has a genuine passion for his job, taking great care to ensure each task is completed safely and efficiently.

We had a great experience with this company, they're very professional, honest, and know their stuff. Highly recommend them, we'll definitely be back - thanks for the excellent service.

Great experience with this company! They fixed my old furnace by replacing the inducer motor and doing a thorough tune-up. Their technician, David, was very helpful and explained the work in a way I could understand. My furnace is working perfectly again - would definitely use them again.

I've had the pleasure of working with David for over 10 years, and I can confidently say he's the most reliable and knowledgeable HVAC technician I've ever met. His work is consistently top-notch - thorough, efficient, and fair in pricing.

What sets David apart is his commitment to staying current with industry developments. He continually updates his skills and knowledge, not just for personal growth but to provide cutting-edge, energy-efficient solutions for his customers. He takes the time to explain options clearly, always recommending what's best for the home and budget.

Whether it's routine maintenance or a complex install, David approaches every job with professionalism and care. I highly recommend him without hesitation to anyone seeking quality HVAC service from an expert with years of experience and a genuine dedication to excellence.

David installed my new AC system flawlessly. From initial contact to completion, he displayed expertise, courtesy, and ease of communication.

He presented his options clearly, guided me in selecting the ideal system for my home, and handled the installation with meticulous attention to detail. He arrived on schedule, worked promptly, and left everything tidy when finished.

What stood out was David's dedication to customer care. He took the time to address all my queries and checked in afterwards to ensure the system performed smoothly.

If you require a reliable HVAC professional, I highly endorse David without reservation.

I recently had an HVAC installation done by this company and I'm extremely satisfied. From start to finish, the service was top-notch - David provided expert advice, was flexible with scheduling, and his demeanor made me feel at ease. The work itself is exceptional: immaculate, professional, and clearly done with attention to detail.

I was particularly impressed that they took on my old Skymark unit replacement job, which many other companies wouldn't touch. I now have a brand-new system that functions flawlessly. The price was competitive too. I'm grateful for the experience and highly recommend this company - thanks again, David!

Trey is excellent.

On time, efficient and expert service.

Exceptional experience from start to finish. Highly impressed and will definitely be recommending this business to others.

Very good workers.

The technician diagnosed the issue correctly and provided excellent service.

Furnace fixed, issue resolved.

Quick installation, thanks.

The service was excellent, with a very helpful and tidy technician.

They did an excellent job, extremely professional, kind, and got the work done quickly.