Harmonic Heating & Air Conditioning is here for you! Call us today when you need commercial roof-top unit or commercial boiler service, repair or replacement needs! Harmonic is your local commercial heating and cooling expert!

Commercial HVAC Services


Harmonic is Here to Keep Your Employees, Customers, and Residents Comfortable

Keeping your employees and customers comfortable is important to your business. A broken furnace or air-conditioner at your office is costing you money in lost productivity and sales. No one wants to work or shop while sweating or freezing. We get that.

If you came into work this morning and discovered that your business is without heat or your air-conditioner needs repair, give us a call at (630) 999-9008.

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We are your local commercial HVAC experts! Call us today for exceptional services!

Our trucks are stocked with the correct tools and most common parts so your business can get back to normal quickly.

We fix all brands of commercial furnaces and air-conditioners for all types of buildings including…

  • Office
  • Retail
  • Warehouse
  • School
  • Medical
  • Multi-unit residential
  • Industrial

If your building is in the Western Suburbs of Chicago, let us help you get your heat back on or your air-conditioner running quickly. Our customers’ comfort is our highest priority.


Commercial Service/Repair Pricing

Regular Diagnostic Charge | $99
OT Diagnostic Charge | $149
Holiday Diagnostic Charge | $199
Large Commercial Project | $110
Large Commercial OT Project | $165
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Do you need RTU replacement? Call Harmonic today for expert commercial services!

Roof-Top Unit and Other Commercial Equipment Replacement

It doesn’t matter what size unit or how many units your building requires, we can help. We work with all major brands of RTUs, Boilers and Commercial Water Heaters so we have options to fit any building owner’s budget.

Commercial Maintenance Services

You have more important things to think about in your business than your HVAC system. That is, until things break. Keep your business running smoothly and hassle free with a Custom Preventative Maintenance Plan for your building’s HVAC system.

Let us take a more active role in keeping your systems in top shape. Regular maintenance is proven to make your investment last longer. Plus, preventative care means fewer breakdown and disruptions to your business.

Harmonic is your local commercial boiler service expert! Call our team today!

Our contracted commercial customers receive special pricing and priority service.

Roof-Top Unit Maintenance

Maintain your investment with regular service checks. Our RTU check includes…

RTU Furnace Clean & Tune-Up | $149 single unit

Labor only, parts & material extra.
(Three or more units – billed at time & materials commercial rate of $100/hour)

  • Inspect and clean burners and ignition components
  • Clean interior of cabinet
  • Clean blower housing for greater efficiency
  • Inspect heat exchanger for safety
  • Inspect exhaust for safety
  • Inspect all electrical components for wear
  • Test motor and capacitor for operation
  • Inspect and test all safety devices
  • Check belt tension and adjust if necessary
schedule rtu furnace service now
RTU A/C Clean & Tune-Up | $149

Labor only, parts & material extra.
(Three or more units – billed at time & materials commercial rate of $100/hour)

  • Chemically clean the condenser coil for greater efficiency and lower energy bills
  • Clean existing outdoor air filter for better air flow
  • Test and check unit for all operations
  • Check refrigerant levels (refrigerant cost extra)
  • Replace all necessary filters and fan belts
schedule rtu a/c service now
Commercial Boiler Tune-Up | $110 per hour plus materials

We work on all types of boilers and hot water heat systems. It’s important to regularly check your system for signs of wear to increase its lifespan and decrease your energy bills.

schedule boiler service now