Harmonic Heating & Air Conditioning is here for you! Call us today when you need air conditioner service, repair or replacement needs! Harmonic is your local comfort expert!

High-Efficiency Air Conditioning


Air Conditioning Maintenance, Repair & Installation

Specializing in residential and commercial air conditioning installation, Harmonic Heating & Air Conditioning is dedicated to keeping clients in Montgomery, Oswego, Plainfield, Sugar Grove, Batavia, and their surrounding communities nice and cool.

No job is too big or small, and we aim to deliver complete customer satisfaction on every project we undertake. We also offer a wide selection of air conditioner models at affordable prices to meet your specific needs.

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We are now a certified Armstrong Air Comfort Team

We are now a certified Armstrong Air Comfort Team


Count On Harmonic Heating & Air Conditioning

When you work with Harmonic Heating & Air Conditioning, our trained service technicians will sit down with you to discuss your needs and help you find the best air conditioning system for your budget.

We pride ourselves on working hard to ensure not only affordability, but quality and complete customer satisfaction as well. So whether you need air conditioning installation for a small home or an entire office building, our highly trained and experienced contractors will provide the speedy, high-quality service you can depend on.

Stay cool in your home with an Armstrong Air A/C system! Call Harmonic today to get yours!

Air Conditioning Repair

If your air conditioner has stopped performing properly, call Harmonic Heating & Air Conditioning for proficient air conditioning repairs at a reasonable price. Our technicians are fully licensed, insured, and prepared to restore your equipment to optimal performance. We're a full-service HVAC company serving residential and commercial property owners in Montgomery, Oswego, Plainfield, Sugar Grove, Batavia, and their surrounding communities, and air conditioning repairs happen to be one of our specialties.

Our staff will extend every effort to ensure your complete satisfaction. As our customer, you'll benefit from our:

  • Friendly, efficient office staff and crew
  • Premium-quality parts, materials, and workmanship
  • Prompt and efficient project completion
  • Policy of being available 24/7

At Harmonic Heating & Air Conditioning, we aspire to accommodate every HVAC need of our neighbors in Montgomery, Oswego, Plainfield, Sugar Grove, Batavia, and their surrounding communities. Our broad range of skills and many years of industry experience have already gained the trust of many of our neighbors, and we take personal pride in each and every job done well. Call our office or contact us online to schedule air conditioning repairs or an on-site estimate with our HVAC contractor today.


Harmonic is at Your Service

Our trained service technicians are happy to sit down with you to discuss your cooling needs and help you find the best air conditioning solutions for your space and budget.

We pride ourselves on working hard to ensure not only affordability, but quality and complete customer satisfaction. And when you hire us for branded air conditioning replacement, you'll benefit from our vast selection of top models.

Whether you need branded air conditioning replacement for a single unit or an entire office building, our highly trained and experienced contractors can provide the speedy, high-quality service you deserve. Call us today for more information or to schedule an estimate.

Armstrong Air Air Conditioners


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Armstrong Air A/C