Furnace Installation & Replacement Services

Chicagoland's Furnace Experts are a Call Away

Furnace Maintenance, Repair & Installation in Naperville, IL

We make it easy for Naperville and St. Charles, IL home owners to get a new furnace in terms of affordability and maintenance. We have many discounts, specials and rebates that are offered to all of our customers. The benefits with our furnace installations are so numerous that you will be counting them for months to come.

When your new furnace arrives, our friendly technicians will install it with their skilled techniques right in your home. Surrounding areas will not be disturbed and the job site will be thoroughly cleaned afterwards. We respect your home as if it was our own and take every job very seriously.

Armstrong Air Furnace

Armstong Air HVAC
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Harmonic is your local furnace replacement expert!
Schedule your furnace estimate with Harmonic today.

Our Featured Armstrong Air Furnaces

Armstrong Air Furnace

High EFficiency +97% AFUE Furnaces

High Efficiency Modulating Furnaces
  • Up to 97% AFUE
  • Variable Speed Fan Motor
  • Pro Series™ Systems
Armstrong Air Furnace

96% AFUE Furnaces

Two-Stage, Constant Torque Furnaces
  • Up to 96% AFUE
  • Two-Stage Heating
  • ENERGY STAR® Certified
Armstrong Air Furnace

80% AFUE Furnaces

Single-Stage, Constant Torque Furnaces
  • 80% AFUE Efficiency Rating
  • Constant Torque Motor
  • Quiet Combustion™ Technology

Our Installation Process

Our Installation Process
Harmonic is your local furnace replacement expert!
Schedule your furnace estimate with Harmonic today.

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.


$179 Annually

Annual Only
Saves $68/yr on Annual Cleaning

Best Value

$29/mo or $348 Annually

$348 Annually
Includes Hot Water Heater & More


$44/mo or $528 Annually

$528 Annually
Includes Hot Water Heater & More

Why Replace Furnace the Aging Furnace in Your Naperville Home?

Once the furnace install is finished, we will help you maintain it so that it lasts as long as possible. You can trust our service professionals to keep your furnace working better and longer.

Our Furnace sales staff can design the most efficient and comfortable heating system to meet your budget, desires, and lifestyles. We take the structural requirements for your home into consideration with all of our recommendations. When choosing a new furnace, considerations should include respiratory issues and allergies. Talk to our experts about all your concerns and we will guide you through the decision making process.

Our experts will do all they can to make owning a furnace easy. Numerous affordable options will be available to you. The greatest part about our installation service is our speed and efficiency. So no matter what time you need us to work, we will ensure the job is done in the best possible manner.

Contact Our Team

Furnace Cleaning in St. Charles, IL

Is your furnace not producing enough heat? Are your gas bills extremely high? Is your furnace failing to keep up with the harsh winters? If you answered yes then you could use a tune-up. We perform annual service that has many benefits for your furnace. Call us today for your estimate!

As one of the best companies for furnace installation in Naperville, Montgomery, Oswego, Plainfield, Sugar Grove, Batavia, and their surrounding communities, we strive for customer satisfaction. We understand manufacturer's warranties do not cover certain items like duct work repairs, labor, and other equipment costs, which is why we help by offering maintenance agreements.

  • Check flue system for safety & carbon monoxide leaks
  • Check return & air filter
  • Lubricate motors and bearing as necessary
  • Check all parts for visible wear & tear
  • Check gas train and all electrical components / connections for safety
  • Test thermostat operation
  • Clean and check heat pump assembly if necessary
  • Check proper burner ignition and efficiency
  • Confirm complete system operation and safety
Harmonic Heating & Air Conditioning Service Area

Proudly Providing
Service Near You

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

Furnace Repair in St. Charles and Naperville

Before the cold winter months in Naperville, Montgomery, Oswego, Plainfield, Sugar Grove, Batavia, and their surrounding communities are upon us, it's a good time to get your furnace inspected or repaired by one of Harmonic Heating & Air Conditioning's professional repair technicians.

Harmonic Heating & Air Conditioning has established itself as the premier furnace repair specialist in Naperville, Montgomery, Oswego, Plainfield, Sugar Grove, Batavia, and their surrounding communities, and you can take advantage of our affordable furnace repair services around the clock! Here are just a few of the reasons why you should choose Harmonic Heating & Air Conditioning for your furnace repairs:

  • Family Owned HVAC Contractors
  • Fully Licensed & Insured
  • 24 Hour Service
  • We Service Your Area
  • Around the Clock Customer Service
  • Affordable Repairs
  • All Makes and Models
  • Superior Service


Ecobee Smart Thermostat

Web Exclusive

Take $50 OFF a new Ecobee 6 Premium Smart Thermostat

RGF Reme Halo LED

Air Quality
Web Exclusive

Take $50 OFF a new REME Halo LED or i-Wave Air Purifier

Ask about Seasonal Rebates

You may qualify for OVER $1,000 in Rebates!


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