All of the technicians I've met have been wonderful, professional, and kind. There customer service…read moreline is also probably the best I've ever worked with. They care in how they treat their customers.

I am usually skeptical of businesses on Yelp with nothing but 5-star reviews as nobody's perfect…read moreand it's just too easy to post fake shill reviews. Nonetheless I gave Harmonic a chance and am happy I did. I'd give them 4 stars just to break the trend, but that wouldn't be fair as they really are the best service provider I have seen in years. They communicated well both on the initial call, and during the appointment. The dispatcher Liz actually called to tell me they'd be running 30 minutes late and confirmed with me that that would be okay. Nice touch. Tony (an owner) came out at the new time and properly assessed the situation and presented a couple solutions. As I am a well-informed customer, (maybe too informed for some) I am always appreciative of techs who are not scared off by my technical questions and don't try to snow me. Tony had no problem that I knew the jargon and the systems in play, and was a consummate professional. He even stated that he wouldn't be suggesting a maintenance program as it was obvious I had that in hand. The price for the call was very fair ($79) and the price for the service performed was also fair. This alone sets them apart from most HVAC people in the western suburbs where up-front gouging is the norm. Too many companies both big and small want to charge you crazy prices just to show up and then have the stones to put the screws to you from there on. He never came close to suggesting I replace my 18 year old system. For HVAC folks, that's test number 1. LOL It's clear to me that Harmonic is building a reputable business that will provide a valued service without all the greedy nonsense. They are not a bare-bones cheapest-on-the-block operation by any means, but they are also clearly not out to rip you off like so many others. I have no doubt they will be around for a long time. I recommend Harmonic and will call them again when I need an HVAC pro.

Called yesterday for no heat on dryer & Dylan repaired today! Cost of repair was very reasonable,…read morecourteous & professional! Highly recommend!

Best appliance repair around. I have had so many different appliances fixed by them including…read morewasher, dryer, stove and refrigerator. Highly recommend!

Such an amazing experience with this company! Everyone we encountered from making the appointments…read morewith Sydney, inspection with Jim and Tanya, to the installations crew, were so professional and informative. Very reasonably priced. We asked for a completely new HVAC system. They came in at 9am and they were done and fully installed by 1pm. Just absolutely STELLAR service 10/10. Highly recommend! Thank you PLANZ H&A for making this a great experience and for cooling our 1st family home for years to come!

Today 7/15/2026, Jake came out to my niece's townhome late afternoon with a smile on his face to…read moreservice her AC. It was 95 degrees and he did not complain once while I myself felt sorry for him working in this heat. Jake was very helpful. Gave us some good advice and provided us with follow up phone numbers. This dude should be recognized for his dedication and determination to help a customer who's AC was in despair. Thanks Jake from Planz!

So fast! They were able to install a new hot water heater within a couple hours of my original…read morephone call. Everyone that worked on it was friendly and explained everything.

Even Flow Mechanical was recommended by a friend and they did not disappoint! We called at 7:00…read morea.m. and by 9:15 a.m., they were here and the HVAC issue was resolved. Fair pricing, honest work and excellent service. Highly recommend!

Had them come out and check my furnace for regular maintenance and they were professional, friendly…read moreand efficient. Had Alex the technician explain a simple issue found with my furnace and recommended and replaced the part without any issues. And in these times of COVID - Alex wore his mask throughout the process. So they are taking precautions which left me at ease. Great price, excellent communication. Highly recommend them.

Action Heating surpassed my expectations!!…read more Dave and Mark are GREAT!!!! We were very pleased, they completed my installation ahead of schedule. Reasonable pricing, Prompt service, they always returned my calls and respond quickly. What more could I ask for!?!?!? I now happily, refer them to all my family and friends. Thanks Again! Brian, Lombard

He was honest, knowledgeable, tried to save me money and quick with his repairs. I would highly…read morerecommend Mo to everyone.

Moe provided incredible service. He explained everything that happened as he went along and how we…read morecan prevent future problems. He was quick, but friendly the whole time. Will call again and definitely recommend.

Anthony and Jimmy completed various scopes at our home this morning. They were friendly,…read morecommunicative, and efficient. This was our first experience with Von's, but I was really impressed. From scheduling to follow ups and then finally to services rendered, I had only terrific experiences with each staff member. Thanks for doing great work, highly recommended!!

Updated Dec 2022 - Third time using Von's and they continue to shine. New exhaust fan install…read more Fast, efficient and cost-effective approach. I have a few larger items in the pipeline and will continue to have them as my "go to" for electrical experts.

Don't waste your time with this company shady business. Horrible customer service and they do a…read morecrappy job.

Excellent service. We called around 10:00am. Was told they would be there between 11:30 & 12:00…read more Received a call from Andrew ~ 11:45 telling me it'll be about 15 minutes. Much appreciated Knew exactly what was wrong with my furnace, (flame sensor). Showed me the part that was bad, asked if I had it replaced recently, (had it cleaned, not replaced a few years earlier). He replaced the part, performed a "tuneup", and was done in about 30 minutes. Very respectful of my time and my home. I will certainly call them to perform some annual maintenance on my AC unit this spring and will now call them every fall to have my furnace checked. Honest, very reasonably priced, technically sound & professional. You will not be disappointed if you call them