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: Expert HVAC services in the Chicagoland area and beyond--offering reliable heating, cooling, and…read moreair quality solutions for your comfort all year round.

Travis is THE guy that you want when it comes to heating and cooling issues. He will not try and…read moresell you anything you don't need. Trustworthy and honest. Goes above and beyond. Just a really good guy! Ps: if your considering going into this business this is the guy you want as a mentor.

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

Do not call or trust these people! They were supposed to do a routine maintenance on our a/c unit…read more They claimed it would cost $79 on the phone, which sounds more than fair. But when they came, the technician claimed it would be another $180 to clean the unit and that we needed to clean the unit before he could finish the inspection, which is totally a scam as we have used another company who did all of it for one flat $99 fee but wasn't available since we are selling our home and wanted to get it done sooner than later. And then he tried to upsell again by saying our Freon was low. But we declined since we had to pay $80 just for him to visually inspect our unit without being able to complete the inspection. So now we have to do the entire thing again with another hvac servicer, one that is actually honest and not upsell a routine maintenance into an almost $300 charge! We even spoke with the owner/manager who said nothing could be done. So they won't even work with you, and you have to pay $80 just to get them to leave without really doing anything of any value. So save yourself the money and the headache and look elsewhere! In response to the business manager: I gave AI screen shots of our interactions and people can read their take on our situation. The fact that you deleted the part where I took a screen shot of you telling us to go ahead and allow the technician to do the work and that we would discuss price later is proof of your dishonesty (see photos). I never said it was for 3 furnaces. I said that we had 3 hvac units and one furnace was being repaired for a minor gas leak, which was fixed. And that we don't have a/c bc we need a functioning furnace. And who services furnaces in the summer? And the fact remains that we were told one price, and that you guys could not complete the maintenance per that quoted price. If that was the case, he should have left and not charge us anything. Instead we had to pay $80 for nothing essentially since the maintenance could not be completed. It also doesn't change the fact that you guys charge an egregious fee for cleaning, which is why we declined the service. He said he had to open up the unit and even maybe clean it with chemicals. This is absolutely unheard of. Our normal HVAC service providers are honest people and have been maintaining our units for many years and they have never told us we had to open up our unit to clean it (which is risky for routine maintenance). You guys have proven that you do not behave honestly, and instead, are a lower/reasonable cost on the phone and up charge for unnecessary work when on site when most people feel they are already stuck with you. Who in their right mind would agree to have someone do the work and then decide on the cost (as you admitted to below)? That is just another way to get us stuck with the work with no idea of what the total actual cost would be. No professional contractor operates like that, and no one should agree to work before knowing the cost. And we are not the only customers who felt scammed and over priced if you read other unhappy customers. I should have read the reviews more closely as you also service appliances which skews your reviews for smaller less complex jobs, making it harder to ascertain your credibility and affordability for just HVAC. But my review stands as is, and nothing is being misrepresented. Maybe this review will help you take another look at your business practices, and if you cannot complete the job you were sent for, you shouldn't charge for it. You should also do a better job getting clarification on the work. I assumed you knew it was for a/c annual maintenance. The fact that we had our furnace repaired shouldn't impact that and you guys should know better than that. Otherwise, how can you call yourself an hvac service provider if you don't even know that you need to service air conditioners in the summer and furnaces for the winter? So your excuse about the wrong work being performed is entirely on you as the service provider, not on me and not on my husband. And I never said I wanted 3 furnaces to be maintained so go back and listen to the call as that was never said. And my husband never agreed about the wrong work being scheduled, further reducing your credibility. They can quote whatever they like, but it doesn't excuse that they pressured us to do work before even telling us the price (see photo), they are over priced, incompetent if they think they need to open up an a/c unit to clean it (which is risky) plus no one maintains their furnaces in the summer. Given that we had to repair a gas leak in our furnace, I just wanted to see if it was working okay because the a/c won't work if the furnace won't work. So there are no inaccuracies in my review, but there are glaring issues with this company and how they operate. People can read all of this should they choose to and make up their own minds. IMHO this business is someone you want to avoid.

I've used this company for many years…read more Very fair pricing. Reliable. Will come out in an emergency.

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.

Brandin A did a fantastic job. He was very knowledgable and nice! Would definitely recommend.read more

Our A/C went out on Thursday, 7/2. Called around 6pm to see what they could do. By 2:30-3pm on…read moreFriday, 7/3, Kaleb W was at our house, diagnosed and fixed the problem and was gone within 20 minutes! We LOVE TR Miller and recommend them to EVERYONE!!!!!

They responded promptly and finished the job--snaking out my clogged floor drain-- at a fair price…read more Gonzalo was friendly.

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!