HVAC reviews in Chicago, Illinois

John fixed our Mitsubishi Minisplit headaches, untangled the mess and figured out what went wrong. His expertise saved the day, no question - would highly recommend KTS for similar issues.

John and his team were a lifesaver for us and our family, delivering exactly what we needed without trying to sell us new gear. They showed up on time every day, kept us informed daily, completed the job within the allotted time frame, provided the promised services, and left our home in the same condition they found it. Their professionalism and attention to detail were impressive, and we're now loyal customers who'll only use KTS for all our HVAC needs.

John stands out for his excellent customer service, making the experience genuinely pleasant. He instills trust through thorough explanations, visual aids, and a focus on getting the job done right - both quickly and effectively.

Great experience with this home services provider. They kept my heating system in good condition by checking it out before winter, fixed a small problem, replaced the humidifier pad, and left me with a spare part. Their expertise and customer service are top-notch, making them a great choice for anyone seeking reliable assistance.

Great service delivered on time, thanks to super friendly staff. The only minor hassle was playing phone tag multiple times for scheduling, but it was well worth the effort. Their reputation preceded by a friend's glowing review, I opted for annual servicing instead of going bigger.

We're extremely grateful for the help from John and KTS team. Years of poor airflow in our home finally got resolved with their assistance. They replaced a 17-year-old unit, fine-tuned dampers, and adjusted AC to ensure even cooling throughout our entire house.

John was knowledgeable, attentive, and reasonable. We'll definitely be loyal customers going forward.

John came across as highly professional from the start. Choosing his consultation method proved to be a smart move, saving me both time and cash on the issue. He was extremely patient and knowledgeable, providing great service. I'd definitely use them again in the future for any maintenance work needed.

We've had an amazing experience with John and Kriss from KTS Heating - they completely overhauled our duplex condo down unit, swapping out old Carrier equipment for new Carrier gear and a shiny new radiant floor system to replace the one that was on its last legs. We originally only wanted radiant flooring done last year, but this year they came back to re-quote the whole shebang, including AC and the radiant system. The quality of their work is top-notch - we ended up snagging significant rebates through People's Gas for going with high-efficiency products, which will net us a big tax credit next year.

Replacing pricey equipment isn't exactly fun, but we're confident our new system will hold up for years to come. One of the standout features was how efficiently they installed everything - it took them just one day to get all that done in our tiny condo closet! The radiant flooring was a game-changer, especially since our downstairs living space was freezing cold all the time before. They also managed to squeeze in some extra storage space, which is a total bonus for us given our condo's limited square footage.

Now, with the floors at a cozy 78-80F, the whole downstairs feels warm and inviting - even during Chicago's coldest winter months. We couldn't be happier with the results, and we're already planning to stick with KTS for all our future heating needs!

John has consistently provided excellent service for my heated floor issues and leak repairs. His work quality is top-notch, and he's refreshingly honest - a rare trait among heating professionals I've encountered. Without hesitation, I highly recommend him. If you're looking for someone trustworthy, skilled, and genuinely likable, John is the one to call.

I had a scheduled furnace maintenance appointment on October 1st, but unfortunately, I was running late. Despite this, John from KTS Heating and Cooling showed up on time, accompanied by his technician Elijah. They waited for me patiently until I arrived. John was courteous, knowledgeable, and even removed his shoes before entering my home to access the thermostat. The service team at KTS is trustworthy and fair in their pricing. They conducted a thorough inspection and identified any potential issues. I highly recommend KTS and plan to rehire them for future maintenance on my Carrier heating system.

I was impressed by John and Jeremy from KTS. They responded promptly to our boiler issue on a chilly Sunday night, showing they're dedicated to fixing problems quickly. Having worked with them before, we've come to appreciate their reliability, honesty, and willingness to explain things clearly. Compared to other Chicago-area HVAC companies I've used recently, I have complete confidence in KTS's work. Unfortunately, the perfect rating doesn't exist, but 5 stars is all I can give - it still feels like an understatement for how reliable they are.

Josh arrived promptly to investigate the issue with our ductwork, which wasn't blowing air from certain vents. He showed respect for my property by keeping it clean and avoiding any mess during his thorough crawl under the house. His demeanor was professional, courteous, and efficient - he got the job done quickly. KTS responded swiftly, and Josh arrived on time as promised. Overall, I'm extremely satisfied with the service provided.

We were blown away by John's team. After being told by 4 Seasons that our boiler was ruined and needed to be replaced at a hefty price, John's team came in and showed us it could be fixed for a fraction of the cost. They delivered on their promises and even threw in two carbon monoxide alarms without asking. The attention to detail was impressive, from installation to follow-up check-ins. It's clear that KTS is a company that still values its customers - John even checked in personally to ensure everything was working properly.

The KTS staff demonstrated exceptional professionalism from start to finish. They efficiently diagnosed our snow melt system issue and implemented a solution. Clear communication was maintained throughout the process, with visual aids provided to help explain the problem. The technician's efforts ensured all necessary warranty work was addressed. We felt no pressure to purchase additional services, making for a genuinely positive experience that has led us to wholeheartedly endorse KTS.

I'd highly endorse John and his crew at KTS - their response times and comms are spot on. They break down the issue and proposed fix without fuss until you're sure it's right for you. Pricing is fair, too. The team is clean, informed, and trustworthy.

This company exceeded expectations by resolving our HVAC issues promptly. During a harsh winter storm, coils froze and our new thermostat was incompatible with the unit. The technician demonstrated expertise and ensured our system worked efficiently after the repair. We're extremely grateful for their professionalism and reliability. Their work restored our home's comfort and we wholeheartedly endorse this company - they'll be our top choice when we require service in the future.

Waited over four hours with no update or follow-up, received a busy signal when I called the office after 6 pm. The supposed evening hours didn't seem to matter for customer service.

Great experience with these guys.

A much-needed boost from our home services team, genuinely makes a difference.

The technician arrived promptly, even before his scheduled arrival time, showing excellent professionalism. He efficiently resolved our AC issue on the spot. His work was top-notch, and I've since referred him to others with similar issues.

The agent who handled our issue was exceptional - enthusiastic, expert, and courteous. He accurately diagnosed and resolved our furnace problem impressively. It's clear that top performers like this one are crucial to any organization. They deserve recognition and support. I'm not a family member, but their work speaks for itself.