Furnace Maintenance & Tune-Up Services

Chicagoland's Furnace Maintenance Experts are a Call Away

Stay Warm and Comfortable in Naperville, IL

Harmonic Heating & Air Conditioning is here to help you keep your heating, air conditioning, water heating and air quality comfort systems running efficiently and reliably for years to come. Call us today! We are an experienced, family-owned company with a focus on honest, customer-service oriented solutions. Our team is committed to delivering friendly, reliable services with a smile. You’ll get only the best from us.

Harmonic Heating & Air Conditioning offers our gas furnace customer rockstar maintenance plans. Keeping your furnace maintained is an important part of a healthy home. Not only are you saving money but you are saving energy.

Using the best parts available, Harmonic Heating & Air Conditioning offers a maintenance plan specifically for your furnace, making it run efficiently and safely. We are fully licensed and insured and ready to help any time of the day or night.

Why Choose Harmonic?

Repair & Maintenance for all Furnace Makes & Models
Locally Owned and Operated in Naperville
Flexible Financing Options
Extensive Maintenance Plans
Harmonic is your local air conditioner replacement expert!
Schedule your AC estimate with Harmonic today.
AC installation services are just a call or click away.

What Does a Furnace Tune-Up Include?

As your furnace or ductless mini split system ages, general wear and tear can cause it to stop working efficiently. And in more extreme cases, older heating systems can suddenly stop working entirely.

  • Inspection: We conduct a thorough visual inspection of the furnace, checking for any signs of wear, damage, or leaks.
  • Filter Replacement: We replace or clean the furnace filter to promote better airflow and improve indoor air quality.
  • Cleaning: We clean the burners, pilot assembly, and other crucial components to remove dirt, debris, and dust buildup that can hinder efficiency.
  • Lubrication: We lubricate the moving parts, such as motor bearings, to reduce friction and prevent unnecessary wear and tear.
  • Combustion Analysis: We perform a combustion analysis to ensure that the fuel-to-air ratio is optimal, maximizing efficiency and reducing emissions.
  • Electrical System Check: We inspect the electrical connections, controls, and wiring to ensure safe and reliable operation.
  • Thermostat Calibration: We calibrate the thermostat to ensure accurate temperature readings and efficient operation.
  • Safety Check: We perform a safety check, including testing the safety controls, gas pressure, and carbon monoxide levels, to ensure the furnace operates safely.
  • Test and Adjust: We test the furnace's startup and shutdown sequences, as well as adjust the blower speed and gas pressure if needed.
  • Recommendations and Reporting: Based on our findings, we provide recommendations for any necessary repairs or improvements, and provide a detailed report of the tune-up performed.
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What to Expect with Harmonic Heating & Air Conditioning

The Collaboration Phase, We Will...

  1. Assign a project manager to thoroughly discuss all equipment requirements for your space.
  2. Present you with accessory and control options to complement your system.
  3. Collaborate with you to customize equipment to meet your specific needs and budget.

Before We Arrive, Please...

  1. Remove any valuables from the entry, hallways, and workspace to ensure their safety.
  2. Clear a safe path to the furnace and A/C to allow for removal and installation.
  3. Clear stairways, halls, entryways, and equipment closet.
  4. Clear space around the furnace to allow access and provide adequate workspace.
  5. Trim bushes, shrubs and trees that impede access to the A/C and related equipment.
  6. Secure any animals that may try to escape through open doors.

The Day of Your Project, We Will...

  1. Arrive on time to respect your busy schedule.
  2. Use tarps to protect your wood floors and carpets.
  3. Remove all old equipment, scrap metal, garbage, and boxes from new equipment.
  4. Be happy to address needs you may have to make your space more comfortable.

After the Project, We Will...

  1. Encourage you to protect your equipment with our Rock*Star Maintenance Program.
  2. Register all equipment warranties and process all applicable rebates noted on invoice.
  3. Follow up with you via phone to ensure your complete satisfaction.


  1. Look for signs of water on the floor or the system not heating and cooling properly.
  2. If something does not seem right.. please call us with any concerns right away.

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