great service - clean and professional !…read more they came on time and were quick to replace the water heater!

Tyler and Ron were very knowledgeable and friendly when here installing a new toilet. They were…read moresuper helpful in answering my questions and was a great experience. I highly recommend them both. Rhonda K.

Harmonic Heating and Air Conditioning is the BEST!!! Our AC…read moredied and after another company told us that our unit could not be repaired and had to be replaced ($6,000), we contacted Harmonic for a second opinion. Daniel the service technician opened the unit up and tested everything. He took the time to explain what he was doing and why. He discovered a bare wire that had been chewed (possibly by a mouse) and was touching the metal housing which tripped the circuit breaker. Daniel replaced the wire and the unit is working perfectly. The honesty and integrity of this company is refreshing. We will not hesitate to use them again and recommend them to all our friends.

Stay away from this business! My entire cooling and heating system was left in an inoperable state…read more I called for a diagnostic of the air conditioner today because cool air isn't coming from the vents. I was told the diagnostic would cost $149. I asked to be informed of any repairs that had to be done. Technician checked the system and recommended replacing unit. We discussed replacement unit and cost. I was ready to pay deposit. In the next 10 minutes I was told that the model I selected is old and not available. New model costs $1000 more. I asked for a proposal to decide later. Technician told me that the visit costs $396. He said that he fixed air conditioner that was not working. He never told me that he is fixing anything. Through our the visit it looked like he was figuring out the problem. I talked to the owner and we agreed that any repairs that were done will be undone so that I do not have to pay for repairs. Then the technician removed all the wires from the board making both heat and fan unusable. He did not just undo the "repairs", but made entire system unusable including fan and heat which were working before his visit. See the photos to show what was done!

On Saturday May 18th, after 25 dutiful years, our AC finally died, and on the day of our son's high…read moreschool graduation. Needless to say, it put a damper on the festivities. I called 4 different companies, and no one would come out until Monday. Well nobody, except for Ivan, of Precision Air, who came out on Saturday night at 9:00 P.M. I couldn't believe it! Ivan came out and thoroughly walked me through my different options for both a new AC and possibly a new furnace as well. Additionally, he carefully explained the financing terms and explained clearly how to avoid the financing trap and to pay off everything before 25 months to avoid a compounding of all interest. After spending less than 30 minutes with him, I knew he was the man for the job, so I signed the contract and cancelled all the other companies the next day. Since Precision's prices were so fair, I ultimately decided to replace both the AC and furnace. On Monday, such an unbelievably short turnaround, Ivan's guys were able to replace not only my AC, but also my furnace. My husband was at work and I was a little nervous without him being there. However, everything went great! Stevan and Jeremy were both very polite and checked in with my wife throughout the install. They were here for over 7 hours, and completed the job perfectly. We are extremely happy with everything! Getting a new AC and furnace is an extremely stressful experience, but Ivan handled everything perfectly for us. I am 100% satisfied with Ivan and Precision Air and strongly recommend them to everyone. Another bonus for me was being able to support a true local small business, not some big guy with a satellite office in town. Thank you Ivan and Precision Air!!!

From the owner: Precision Air is your go-to HVAC contractor in Plainfield, IL, providing top-notch heating,…read morecooling, and air quality solutions for residential and commercial properties. Our expert team offers reliable services in the Chicagoland area and beyond, ensuring your comfort all year round. Trust Precision Air for all your HVAC needs.

AC wasn't cooling...Travis returned my call fast and gave me a tip to try first before anything and…read moreit worked. He also gave a follow up call to verify it - thank you Travis. It is nice to have a go to for my heating and cooling!

I needed a humidifier installed in new construction home. I'm extremely pleased with my experience…read more They explained things patiently and thoroughly. When they came for the install, they informed me that the original humidifier was not the best fit. Rather than installing it just to get the job done they paused. They recommended a different option that was actually a lower cost and that they would have to come a different time to install it. This shows their dedication to customer satisfaction and making sure the customer has the best product to address their needs. Highly recommend them.

I got a prompt response to my request with a quote for diagnostic, which would be waived if I…read moreproceeded with the repair. They do provide the service requested and gave me a link to make an appointment. We'll see how things go in a couple of days. The repair man, Alex, was prompt and identified the problem - two problems, actually. He was able to get the dryer running again, better than it had been. Reasonable price

Had them come look at an Samsung induction that suddenly stopped working. The error code indicated…read morethat there was something wrong with the control board. No issues with the technician would did spend a bit of time taking the oven apart. He tested the control board and said it was the issue, collected my service fee, then an hour later sent an estimate for more than the price I paid for the oven two years ago. I can look at the part online and they are wanting to charge double, plus $500 for roughly the same labor that they just spent doing for a $65 service fee. So while they were quick to respond and nice enough... I'm still up a creek with less money and more wasted time.

The most honest company I have ever worked with. Saved us hundreds on repairs when another company…read moretries to scam us. Always reliable and my first call when something breaks down.

Steve and his team are incredible at what they do and we were very fortunate to find their HVAC…read moreservices. They have done multiple installs for us, including AC and whole home humidifiers, along with annual routine maintenance and we have been ecstatic with the attention to detail and turnaround time. Highly recommended if you're looking to upgrade your HVAC or even have some routine services to keep everything running smoothly. Best, Charlie

Great service and consistent quality. We used them for servicing our 20 yr old furnace/AC and…read morerecently upgraded to new, modern efficient units.

Always on time; fair pricing, friendly and excellent service. Tech Hugo did a great job cleaning…read moreand adjusting my system.

Tom & Jane Gallagher - Can't thank TR Miller enough for the prompt response when we called last…read moreSunday about our faulty air conditioners. The estimator, Mike, came out first thing Monday morning!! Mike was very thorough and super knowledgeable - did a great job walking us through the estimate. This morning (Tuesday) the installer crew, Carlos, Joige, Arden, and Andrew, got right to work replacing both the upstairs and downstairs AC units (inside & out). They did an outstanding job on a big job!! The units are working great and look great!

I recently used TR Miller for the first time to snake my kitchen drain which was clogged. Adam was…read morevery friendly and knowledgeable. He got right to work and did a very thorough job. He cleaned up everything, leaving it looking better than when he came. I thought it was well worth the money.

He seemed nice but We lost communication or something. We…read morecontacted him about a bathroom exhaust fan and we never finished our conversation.

Jeromy was ultra knowledgeable and gave excellent recommendations that we needed! Scheduling was…read moreeasy and dependable; outstanding communications made it perfect. The guys were careful moving large heavy furnaces through our narrow hallway. At the completion, the furnace room was spic and span cleaned up, a nice treat. We also subscribed to their economical maintenance package, which will make our lives purr along in the future. Thank you Jeromy and Angel!

Our vintage furnace had served us well until we required an evaluation due to a foul odor. We had…read morequality and timely service by Donnie, Danny, and Logan, along with fantastic office customer service. Diagnosis results were for a new furnace. We were provided three excellent options and their high quality benefits. Our new furnace was installed today by Michael, Nico and Raphael. The swap out of old for new, teachings, and addressing questions were excellent and completed in four hours. Thank you as all of you are a fantastic group of professionals!

Barry S was very professional and worked quickly, he had all the tools and did a great job.read more