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

My young daughter had a technician come out... who said her thermostat was broke…read more Okay he replaced it and got it running. Thermostat was only a year old, but how can you prove it worked, you have to trust the technician especially when there's no air conditioning and you just want it running. While out checking the unit he noticed a corner bent and started telling her a stupid scenario of a dog rubbing up on the unit and peed all over it and to get it cleaned out it would be somewhere over $1,000. Come on, what lengths of lies you sales people go to. I told her to stay away from you guys and would recommend someone else. I would not recommend Anderson at all. It's hard to find honest heating and cooling technicians. Anderson is not one of them.

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!

When I called to make appointment representative told me I was out of work area. I told her on…read moretheir website I was in their area. She said I was incorrect but would check with owner and would call me back. Never called me back! Plus from the response from Paul at the company is totally out of line. If Paul checked his website, he would see that Carol Stream is in his service area. I'm so glad I decided not to do business with your company. You seem like a rude ignorant little man am I complaint is completely valid again. Check your website. I'm in your service area!

Shout out to Dan, Dakota, Josh V, and Luis! They did an amazing job with the install. I got a new…read moreAC (which is the main reason I called air dynamics in the first place.) I also needed a new furnace and water heater. I also got the air duct cleaning as well. I wasn't pressured into anything and Dan was great answering my questions before we proceeded with anything. During the install, they kept me informed on what was happening throughout the process. I also got text alerts when they were on the way along with photos so I knew who to expect. I would definitely recommend them 100%.

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.

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.

The HOF HVAC team was so responsive when I needed a water heater replaced…read more They delivered a replacement water heater and drain pan within 2 hours and had it installed by mid-afternoon. Very professional team! I would recommend them to anyone needing plumbing or HVAC work done!

Our AC was struggling during the July 2025 heat wave. Daniel was incredibly prompt, helpful, and…read moretransparent. He even waited while I finished a work meeting so he could thoroughly explain the issue, the fix he was going to do, and discuss the cost. I really appreciated his honesty! The fix ended up being ~$200 less than the original estimate. Highly recommend

Had a new whole house humidifier installed. I called them and had it installed a couple of days…read morelater. Excellent service, friendly staff.

We had our annual maintenance done today on our AC We have…read morethe Bronze plan and we have an annul service done each year. A capacitor was weak and was replaced under warranty with only a labor charge

Our floor drain started to back up whenever we'd do laundry. Summers was able to get a plumber out…read moreto us right after the weekend, since it wasn't urgent I didn't mind waiting a couple days anyway. Our arrival window had to be moved back a little, but I was updated when I called to check in, no big deal there. Everyone I spoke to was polite, courteous and professional. Our drain needed a quick cleanout and we can do laundry again with no issues. We'll definitely call them with any future plumbing problems.

Summers sent Jason and helper out to hook up the natural gas line to our new pool heater. Jason did…read morean excellent job, making sure that all codes were followed and the installation was leak-free. He even came back out after we had the electric install finished to make sure that the installation was complete and safe, at no additional charge.

As a fellow small business owner, I feel obligated to warn others about our experience with this…read moreHVAC/R contractor. Over more than a decade of managing vendors, this has been hands down the most disappointing and unreliable company we've dealt with. We initially entrusted them with all our heating, cooling, and refrigeration needs. Unfortunately, what followed was poor communication, subpar service, and a complete lack of accountability. When issues came up--which happened frequently--they were more interested in deflecting blame than fixing the problems. Over a year, they raised our service rates by 25% without any notice or explanation, and when I reached out to ask about it, they never responded. I also requested several quotes that were never provided. As a busy business owner, I shouldn't have to chase down contractors just to give them our business. Even worse, they billed us for services that were clearly not performed. I verified this myself--twice--and one time had to bring in a third-party HVAC tech to confirm (with photo evidence) that a rooftop unit hadn't been serviced as claimed. Despite being presented with clear proof, they refused to acknowledge or resolve the issue. After nearly two months of delays and rescheduling for a correction that never happened, we finally hired another company to finish the job. Their refrigeration work was even more troubling. They miscalculated and mis-sized a walk-in freezer, resulting in a system we had to completely replace. They relied on bad measurements and passed critical sizing calculations to a supplier instead of doing it themselves. Even when I showed them accurate specs from the equipment manufacturer, they pushed back with excuses instead of taking responsibility. To make matters worse, they submitted a bid to replace our walk-in cooler and freezer with dimensions that were entirely off. Had we accepted the quote, the units would've physically not fit the space--basic measurement errors that would have led to a major installation failure. The most aggravating part of all this has been their tone: dismissive, defensive, and utterly lacking in professionalism. If you're considering this company, I urge you to think twice. When things go wrong--and they very well might--you'll be on your own. You deserve a vendor who respects your time, your business, and takes pride in getting it right.

If you want people who will show up at the wrong time. Then they come and fraudulently charge for 2…read morehours of work AND APPRENTICE FEE FOR NOT FINDING A LEAK THESE ARE YOUR GUYS!!! 550.00 FOR NOT finding leak. Look elsewhere

I contacted the attic experts and set up an estimate for June 30, 2026, and they gave me the…read moretimeframe between 10 AM and noon as their earliest available appointment. As it turns out, they were a total no-show, without even a call to try to reschedule or to apologize for not showing up. This tells me all I need to know about this company.

This place is amazing!!!…read more I have been in the home improvement business for 40 years and never dealt with a company like this! Appointment set for 8 Am arrived at 8:05..Clean drop cloths,very professional crew of three. and a dustpan and brush just to make sure no crumbs left behind. The owner was on the job and told me all his crews are told " when you enter a home it is my house and treat it according) Oh ya almost forgot they were 25% less than a competitor