Heating & Air Conditioning
Repairs, Maintenance, and Installation

As Low As $94/mo

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

AC & Furnace Combo

as Low as $95/mo*

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Less than $23/mo

40 Gallon Water Heater - Now As Low As $23 per Month

Basic 40 Gallon Water Heater

Less than $23/mo

Book Your Install

Only $170/year

Join the Rock Star Program Today

Join the Rock Star Program

General Admission Plan for only $170/year

Become a Rock Star

Join the Rock Star Program Today

Winter is around the corner, get ready for heating season today!

Are you asking yourself, what is the best furnace brands? Armstrong is! Call today to learn more about our Armstrong furnace selection.

We can cover all your winter HVAC services; furnace service, heating installation, new furnaces, Mitsubishi mini split maintenance and water heater service for your home or business!

Harmonic Heating & Air Conditioning is your local Hvac Contractor

Schedule Your Service

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

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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.

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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.

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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 $170 p/year (that's $85 Spring + $85 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.

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Q: Cheapest way to get a clean & check tune-up?
A: The Rock Star program - Just $85 per visit

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

Rock Star

$528 annually


$348 annually

General Admission

$170 annually only
saves $68/yr on annual cleaning

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See What Our Customers Are Saying

Harmonic Heating & Air Conditioningstarstarstarstarstar4.9 / 5

268 Total Reviews /files//harmonic-logo-footer.png630-999-9008$10S187 Schoger Dr Suite #54, Naperville IL

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 Comfort Team

Harmonic Heating & Air Conditioningstarstarstarstarstar4.9 / 5

268 Total Reviews /files//harmonic-logo-footer.png630-999-9008$10S187 Schoger Dr Suite #54, Naperville IL

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