HVAC reviews in Chicago, Illinois

I recently had a great experience with this company, which came out multiple times to resolve an issue. Randy, the technician, was exceptional - extremely respectful, patient, and thorough in his work. He took the time to thoroughly explain everything and ensured every part of the system was checked.

The office staff was also very accommodating and helpful. They worked well together to find the required part and their teamwork made the process run smoothly. The quality of service was top-notch and the pricing was fair. I'm impressed by their professionalism and dedication, making me highly recommend this company.

I had a fantastic experience with this service provider. They showed up promptly on the same day as requested and called ahead to let me know their arrival time. The technician was knowledgeable and efficient in diagnosing and fixing the problem, even navigating a tricky location outside my window. I'm extremely satisfied with the service and will definitely be using them again.

Alltemp did a fantastic job from start to finish. When my furnace stopped working, they scheduled an appointment that fit my schedule perfectly. The technician, Marvin, arrived and quickly identified the issue - he even knew to use a camera to inspect the inside of the furnace.

Marvin's thoroughness impressed me, as he took the time to look beyond the obvious problem and noticed internal cracks that could have caused safety hazards if left unfixed. He presented me with replacement options and explained the pros and cons, pricing, and benefits in an honest and non-pressure sales approach.

Despite my initial reluctance, Marvin made me feel at ease about making a decision. His knowledge of my current furnace was impressive, and he also helped me understand replacement options for my AC when the weather improves. I'll be requesting Marvin for future appointments because of his professionalism, personability, and ability to put me at ease in my own home. If you're using Alltemp, specifically request Marvin - you'll be in good hands.

Ed from All Temp was a lifesaver when explaining our boiler and radiator system - we're new to Chicago and it meant a lot to have someone break it down for us. His thorough inspection and attention to detail were greatly appreciated, especially since he also took care of some much-needed cleaning and maintenance. His professionalism and expertise put us at ease, making the experience truly seamless. We'd definitely recommend Ed and All Temp for any heating service needs - they truly delivered exceptional service.

Exceptional workmanship, hands down. Replaced both my AC and furnace, and David ensured everything was done right - especially the ducting. He offered unbiased expert opinions, too. The price was spot-on. If you need reliable work, look no further. Highly recommend for any AC or furnace service.

David was on the ball with his usual quality work.

I hired Cosmic after my furnace wouldn't turn on properly. They got back to me right away and sent someone out the next morning - David arrived as planned and was very pleasant to deal with. He walked me through what he was doing, showing me live views of the parts he checked, and ran a CO test to ensure everything was safe. It turned out the issue was with my thermostat wiring, which he fixed quickly. Considering other companies' prices, Cosmic's service call was fairly affordable. I'm happy to have them handle any future maintenance needs I may have.

David helped me find a suitable heater for my attic - no other contractor could do this for me. He arrived promptly, showed up professionally, and gave a price tag that fit within my budget. I'm thoroughly happy with the work he did and would highly recommend him to anyone seeking HVAC assistance.

I recently hired an HVAC technician to fix my hydronic radiator heating system. David was knowledgeable and took the time to answer all my questions when I first called. He arrived promptly the following day, diagnosed the issue, and returned the next day to complete the work. The repair is now flawless, and I'm extremely satisfied with the service.

Cosmic provided excellent service, arriving promptly and offering a reasonable quote. Their technicians were knowledgeable and trustworthy, making the experience hassle-free. I'll definitely use them again in the future.

David was professional and showed genuine expertise. He took the time to clearly outline his plan. Highly recommended for future services.

The service was top-notch. David delivered on time and did an outstanding job. Highly recommend Cosmic HVAC - their logo is a nice touch.

David showed up on time, acted like a pro, and got the job done quickly. He worked around my schedule to fix some problems with my AC. He was clear about what needed fixing and seemed genuinely reliable. I'm sticking with him for any future HVAC work.

David far exceeded my expectations, servicing 8 furnaces in one day and performing numerous extra checks and tune-ups while I spent the whole day with him. He's an excellent professional who genuinely cares about his work - I'm eager to continue doing business with him. Cosmic HVAC is a top-notch small business that delivers exceptional service; I highly recommend them to anyone seeking reliable assistance.

I called these guys based on a friend's recommendation and I'm glad I did too! David, the owner, showed up to assess my AC - straight to the point. He explained the problems and options clearly. Prices were fair. They worked diligently and replaced my entire system in one day. I'll definitely use them again and will recommend them to others.

I found an honest and trustworthy guy in this age where it's rare. David is top-notch - he delivered exactly what he promised and more. He didn't rip me off or try to fleece me. As a first-time homeowner, I'm clueless, but David treated me like a pro. Unlike others who took advantage of my ignorance, he was patient and fair.

If you're looking for someone reliable, look no further. You won't find anyone like David. He's the real deal - don't waste your time with impostors.

Cosmic HVAC nailed the maintenance of my AC and furnace - clean and well-done. Their technician, David, showed up on time and explained what he was doing in a clear manner. Overall, their professionalism left me feeling confident and impressed. Highly recommended without hesitation.

I've had dealings with this company multiple times and was consistently impressed by their professionalism and commitment to customer satisfaction.

David from Cosmic did an excellent job, clearly communicating his work and delivering results promptly - definitely worth hiring again.

These guys consistently deliver top-notch work. They're highly professional, completing jobs on schedule and at a fair price. I've worked with them for multiple HVAC projects and was impressed by their integrity - they never attempted to push unnecessary extras, which says a lot about their focus on the customer's needs rather than just making a sale.

David and Cosmic HVAC is outstanding. I've had excellent experiences with their service, particularly with David, who consistently delivers top-notch diagnoses and resolutions in a timely manner. His reliability is impressive - he shows up as scheduled and gets the job done efficiently. I wholeheartedly endorse him for any heating/cooling needs.