St. Charles, IL Gas Furnace Check-ups

Schedule the Gas Furnace Tune Up You Need

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6 Total Reviews 630-965-9444$902 S Randall Rd, St. Charles IL

Doc's HVAC has provided heating services for DuPage County, IL businesses and homeowners since 2002. Our factory-trained, licensed, and insured team of heating specialists have the local expertise to properly service your gas furnace system!

Doc's HVAC is Here for You

  • 24/7 Emergency Service Available
  • Your Local Furnace Experts
  • Accredited & Highly Reviewed
Schedule ac repair with Doc's HVAC Today

St. Charles, IL Gas Furnace Check-ups

Regular health check-ups are an important part of ensuring that you and your family are healthy and safe. Properly maintaining your gas furnace with a safety and maintenance check-up every year offers similar benefits including:

  • Ensure Safety: A complete inspection of your furnace heat exchanger and vent system will give you the peace of mind that you family will not be exposed to odors-less and dangerous carbon monoxide.
  • Let Your Furnace System Live a Full Life: A properly maintained system will last several years longer than one that is ignored. Proper airflow and clean air filters will maintain a comfortable indoor environment. Proper professional maintenance ensure a maximum return on the investment you made in your gas furnace.
  • Identify Issues Before They Become Acute: One of the most important parts of a Check-up is component testing. Our furnace techs have the experience to identify a problem or a system component that is still working, but likely to fail. This will sharply reduce the likelihood of emergency repairs.
  • Proper Warranty Maintenance: Improper maintenance is a major cause of system failure. All major gas furnace manufacturers require annual inspection and maintenance as a condition of extended warranty coverage.

Furnace Check-up Steps

The specific steps for an furnace tune-up vary a bit by equipment type and age, but these are items we will always perform on an furnace tune-up:

  • System Inspection
    Inspect the gas furnace, the AC coil (if appropriate), any system components like humidifiers or air cleaners, and visible ductwork prior to service and document any immediate areas of concern.
    Ensure the furnace is level and properly supported.
  • System Preliminary Test:
    Start up your gas furnace and operate for a few minutes. Identify and document any unusual operating conditions or noises.
  • Furnace inspection and testing:
    Carefully examine the heat exchanger for cracks or signs of deterioration
    Inspect the burners and clean if necessary. If the burners need cleaning, consider and correct the cause of any soot or condensation to prevent future burner failures.
    Inspect the ignition system for any signs of improper operation * Check the fan switch
    Inspect the safety controls and the furnace PCB (if appropriate)
    Inspect the vent system and all components. If chimney vented check for signs of condensation. If your furnace is 90+ AFUE check the vent for proper pitch and inspect the condensate removal system. Check for proper combustion air.
    Change and disposable filters. Inspect and clean as necessary and permanent filtration or air purification equipment.
    Inspect the indoor unit fan and fan motor Examine the system ductwork and ensure that it is properly sealed and secure
    Check the gas lines and all visible gas connections
  • Start-up System and Test:
    Perform a full operating test
    Test wired thermostat operation and replace any disposable batteries as needed
    Measure and document the temperature rise for the furnace
    Measure and document blower motor amp draw
  • Clean-up: We'll pick-up our tools, remove any old filters, and thoroughly clean our workspace
  • Visit Report: We'll explain our work and document any potential problems or recommended repairs

Call the Doc today to sign up for our full Furnace Maintenance program!

Armstrong Furnace

Furnace Installation

Doc’s can also replace or install a new high-efficiency Armstrong Gas Furnace

New Gas Furnace Installations


Doc's HVAC installs new Armstrong and Ducane gas furnaces for St. Charles, IL area home and business owners. We have the equipment and experience to provide safe reliable winter comfort for new construction or furnace replacements. Click here for more details.

If you're having trouble with your heating system now we full around the clock repairs. Click here for more information about our furnace repair services.

Fall Furnace Check-ups

We offer scheduled air conditioning system check-ups for St. Charles, IL area home and businesses. We service all brands including Armstrong, Carrier, Goodman, Lennox, Rheem, Trane, York and more.

Schedule ac repair with Doc's HVAC Today

Home Healthcare Check

Enjoy Peace-of-Mind by joining our maintenance program

Doc's is Family Owned:
Since 2002, Doc's HVAC has been owned and operated by Mike and Dana Riebe. Doc's is an active member of the St. Charles, IL area community.
Better Business Bureau:
Check out our five star reviews on our local BBB. We are more than proud of our A+ BBB rating!
Voted #1 By Our Customers!:
Voted Best Heating and Air Conditioning in 2020 by readers of the Kane County Chronicle and the St. Charles Daily Herald!
Licensed and Insured:
We are licensed and insured heating and air conditioning contractors.
ArmstrongAir® ComfortTeam Dealers:
We have been recognized as a local Armstrong Air® Comfort Team dealer. This recognizes our long term commitment to training and customer support.

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