Customer Reviews


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Harmonic Heating & Air Conditioning

starstarstarstarhalf star 4.9 / 5 | 140 Total Reviews

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"Very good service. Pleasant to deal with, easy to schedule. Showed up at scheduled time instead of having to worry about a 4 hour window. Nice explanation of the results of the service. My only mild criticism is that the posted prices of service should be known by the technician. The price of a furnace tube up is clearly $105 with the 2nd being $96 (per your website). I confirmed this when I s he filed. But the technician thought it was $105 for both. It was an easy fix as he called the office, but the customer shouldn’t have to explain this. Still - hands down my best experience with HVAC business. I will definitely use harmonic again. "
N . B from Naperville, IL on December 21st, 2018
starstarstarstarstar(5 / 5)
" Professional service, on time, installed product as expected, easy communication, reasonable estimate. Great to work with!"
J . T from Downers Grove, IL on December 19th, 2018
starstarstarstarstar(5 / 5)
" Appreciated the the level of detail and attention that was given for furnace inspection, cleaning, and tuning. Always impressed with Harmonic staff with their professionalism! Thank you too to Liz for getting this scheduled asap since I was behind the ball to getting the furnace appointment done before winter!"
A . S from Oswego, IL on December 18th, 2018
starstarstarstarstar(5 / 5)
" Harmonic is #1 for us! Great customer service and follow-up! Thank you to Liz, Jeremy, Brandon and Nate! You all ROCK!"
V . M from Montgomery, IL on December 18th, 2018
starstarstarstarstar(5 / 5)
" Very professional and responsive from start to finish."
J . D from Naperville, IL on December 18th, 2018
starstarstarstarstar(5 / 5)
" Excellent job. "
J . J from Downers Grove, IL on December 17th, 2018
starstarstarstarstar(5 / 5)
" Excellent, arrived 5 minute early and was very professional. Serviced my heater and took the time to show me everything he did, why he did it and how it worked. Found the issue with my humidifier and correct. Highly recommend and I signed an annual service contract to maintain my heater and AC. "
E . P from Naperville, IL on December 17th, 2018
starstarstarstarstar(5 / 5)
" Everything was awesome and continues to be. We had a humidifier installed and it has been wonderful. Daniel was efficient and knowledgeable. Thank you."
D . L from Oswego, IL on December 15th, 2018
starstarstarstarstar(5 / 5)
" Entire experience was top notch! My tech (Danny, I believe) was excellent. Thank you!!"
E . L from Oswego, IL on December 14th, 2018
starstarstarstarstar(5 / 5)
"Harmonic is truly a blessing! They are honest, talented, professional and fair...need I say more?? I could not speak more highly of this company! "
J . P from West Chicago, IL on November 3rd, 2018
starstarstarstarstar(5 / 5)