Heating & Air Conditioning
Repairs, Maintenance, and Installation

AC & Furnace Combo - Now As Low As $94 per Month

Winter Deals

Take advantage of lower prices while you can! Get a FREE ESTIMATE!
*When using our FREE ESTIMATE tool, you can choose a FREE ACCESSORY for your installation.

Web Exclusive 1 - Take $50 OFF a new Ecobee(6)Premium Smart Thermostat

Web Exclusive 2 - Take $50 OFF the purchase of a "RGF RemeHalo" or "i-Wave" Air Cleaner to (eliminate airborne pollen and other particulates to make your home healthier.)

Ask about SEASONAL REBATES! You may qualify for OVER $1000 in Rebates!

Join the Rock Star Program Today

Several finance options available. Contact for details.

Take $250 OFF the installation of a new Armstrong Furnace or A/C.
- or -
Take $500 OFF the installation of a new Armstrong Furnace + A/C COMBO!

(For a limited time only.)



Local, Prompt, and Professional HVAC Services
Schedule Your Service Today

See What Our Customers Are Saying

     M . R from Plainfield, IL

"Shawn serviced our furnace. He explained everything he was doing and showed me the areas of concern. He was able to figure out the problem and cleaned the areas that needed it. He was honest and knowledgeable. Great service! Thanks! "

Furnace Repair

     R . M from Aurora, IL

"Harmonic has been providing us with preventative maintenance on our heating & air conditioning system as well as our water heater. Always professional and trustworthy. They helped nurse our systems until they were no longer reliable and we felt confident in giving them our business when replacing all 3 units. "

Rock Star Maintenance Program

     H . M from Naperville, IL

"Service was great. They were able to come and install the AC unit within a week of when I first called them. The technician was friendly and respectful of my house and pet. The unit was installed within three hours of their arrival and operates as expected. Highly recommended."

AC Installation

click below to learn more about the products we carry

Our team is on time or early - Guaranteed


Don’t Waste Your Day Waiting For A Four Hour “Window”. Schedule Your Guaranteed Appointment Online.

If We Aren’t On Time Or Early, We’ll Give You A $25 Amazon Gift Card.

One Of The Little Things That Make A BIG Difference At Harmonic Heating & Air Conditioning.

schedule service

Financing with SERVICE FINANCE Company is Available

0% No Payment for 6mo.

Several Finance Options are Available!

*Terms Apply & Subject to Credit Approval

Click below to apply for financing.

Apply for Financing

Why Choose one of our "Rock*Star" Maintenance Plans?

Our annual maintenance programs at Harmonic Heating & Air Conditioning provides better health and longevity for your home or commercial heating and cooling systems. With a modest investment starting at only $179 p/year (that's $89.50 Spring + $89.50 Fall), we'll help provide peace of mind while our great team will work hard to keep your home and office " Smarter, Healthier, and More Efficient". (That saves $68 on annual cleaning alone!) Give us a call at 630-999-9008 more information.

Book Now

Q: Cheapest way to get a clean & check tune-up?
A: The Rock Star program - Just $89.50 per visit

A/C & Furnace Repair Discounts, Annual Maintenance, & Savings on New A/C & Furnace Installations

Rock Star

$528 annually Includes Hot Water Heater & More



$348 annually Includes Hot Water Heater & More

General Admission

$179 annually only
saves $68/yr on annual cleaning

Learn More

See What Our Customers Are Saying

Harmonic Heating & Air Conditioningstarstarstarstarstar4.9 / 5

297 Total Reviews /files//harmonic-logo-footer.png630-999-9008$10S187 Schoger Dr Suite #55, Naperville IL

Harmonic Heating & Air Conditioning BBB Business Review
Harmonic Heating & Air Conditioning BBB Business Review

Naperville HVAC Professionals

Schedule a FREE Home Comfort Assessment

Armstrong Air Pro Team - Your local furnace and air conditioner experts.


  • We listen when you call and make an appointment.
  • We arrive on time.
  • We provide up front pricing so that you are never surprised.
  • We carry out all transactions with honesty and integrity.
  • We guarantee all our work and stand behind all warranties.
  • We happily address any needs you have to make your home or business comfortable.

We are now a certified Armstrong Air Pro Team Member

Harmonic Heating & Air Conditioningstarstarstarstarstar4.9 / 5

297 Total Reviews /files//harmonic-logo-footer.png630-999-9008$10S187 Schoger Dr Suite #55, Naperville IL

Harmonic provides expert heating, a/c and air quality system services in Aurora, Naperville, Montgomery, Oswego, Wheaton & More!