AC, Heating, Water Heaters & More

#1 HVAC Company, Serving the Chicagoland Area

Get your new AC installation estimate

New Furnace Install
As low as $52/mo

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Schedule AC Maintenance

Ensure your comfort this spring and summer! Schedule professional service/maintenance for your AC, heat pump, or mini-split system with Harmonic Heating & Air Conditioning.

Call Harmonic HVAC for your services.
Call Harmonic HVAC for your services.

Humidifiers are a way to create a "Smarter, Healthier, more Efficient" home by Harmonic.

Customize your Home with Harmonic.

Call Harmonic HVAC for your services.

#1 Air Conditioning Services

Harmonic HVAC is your AC service and #1 repair, maintenance and installation specialist in Naperville and the surrounding counties. We've been helping residents with their HVAC and commercial HVAC for decades.

Our technicians offer AC, heat pump, and mini split repair and maintenance for all makes and models. We install new Armstrong and Mitsubishi systems.

The #1 Heating Service & Repair in Naperville

Winter's in the Naperville area can get cold! It's important to make sure your heating system is running smoothly for the upcoming cold weather.

The expert technicians at Harmonic HVAC can repair and perform tune ups on all heating system makes and models. We are a proud Armstrong Air Pro Team dealer here in Naperville, and install Armstrong Air heat pumps and air conditioners. We install Mitsubishi mini split heat pumps.

#1 HVAC & Other Services

Harmonic HVAC also provides Commercial HVAC, indoor air quality service, water heating and unit heater installation and service. If you need a new air filtration system installed, your commercial furnace checked or repaired, or a new unit heater installed in your shop we can help.

Tired of not being able to use your shop or garage over the winter time? A new unit heater will do just the trick, and keep your space warm and cozy so you can get more done year round.

Rock*Star Maintenance Plans

Our annual maintenance programs at Harmonic Heating & Air Conditioning provide a Smarter, Healthier, more Efficient home by providing the best heating and cooling systems on the planet.


$19 Per Month

$228 Annually

Best Value

$38/mo or $456 Annually

$456 Annually

Heat Pumps, Mini-Splits & Garage Heaters

Save Today with Rebates & Tax Credits
Armstrong Air Heat Pump

Armstrong Air
Central Heat Pumps

Central heat pumps provide year-round comfort by heating in the winter and cooling in the summer.

Why Change from AC to Heap Pump?
Mitsubishi Ductless Heat Pump

Ductless Mini-Splits

Ductless mini-splits provide true comfort control with precise zoning and ultra high-efficiency models.

Armstrong Air Heat Pump

Garage Heaters

Reznor garage heaters make it so you can utilize your workshop or garage space all year long.

Harmonic Heating & Air Conditioning Service Area

Proudly Providing
Service Near You

  • Aurora
  • Batavia
  • Montgomery
  • Naperville
  • Oswego
  • Plainfield
  • St. Charles
  • Yorkville

Air Conditioner Services

Specializing in residential air conditioning installation, Harmonic Heating & Air Conditioning is dedicated to keeping our customers in the Naperville and Plainfield region nice and cool.

Book AC Services

Heating Services

Mitsubishi Electric brings unmatched energy efficiency, performance and control to home cooling and heating. It’s never been easier to keep your house comfortable, without spending a fortune on your energy bills.

Book Heating Services

Our Installation Process

Our Installation Process

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