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*$59.50 Residential Heating and Cooling Service Fee

KNOW Heating BBB Business Review


HVAC Maintenance in Columbus Ohio

To ensure that efficient and safe HVAC system operation, it is essential to perform routine maintenance. Dirt and neglect are the top causes of heating and cooling system inefficiency and failure. We provide pre-season tune-ups before each cooling and heating season. To test and perform the maintenance on your system, it must be residential and in good working order.

Look for our special offers in October and May when our regular priced maintenance of $299 is 50% off! Below is a list of what your technician will check during the maintenance on your furnace or air conditioner.

Maintenance is scheduled Monday through Friday from 8 am to 5 pm call 614-678-6344 NOW

Or schedule your maintenance online today.

Dirty Flame sensor

Furnace Maintenance

  • Adjust gas pressure as needed
  • Measure for correct air flow
  • Adjust pilot as needed
  • Lubricate all moving parts
  • Perform a combustion calibration
  • Test proper starting capabilities
  • Adjust furnace burner assembly
  • Clean ignition & burner assembly
  • Measure temperature differences
  • Monitor flue draft
  • Monitor heating cycle
  • Test furnace safety controls
  • Measure volts and amps
  • Check heat exchanger

Call 614-678-6344 to schedule.

Dirty Condenser

Air conditioner

  • Test AC safety controls
  • Clean condenser coil
  • Monitor refrigerant pressure
  • Monitor cooling cycle
  • Test condensate drains
  • Test AC starting capabilities
  • Inspect gas piping
  • Inspect blower components
  • Check thermostat calibration
  • Inspect evaporator coil
  • Tighten electrical connections
  • Show you how to wash condenser

Call 614-678-6344 to schedule.

What customers say about our maintenance service


  • I called KNOW Heating last fall to check my furnace and perform a thorough maintenance and saved 50% off their regular in-season price. When it got cold my furnace came on and ran all winter without any problems, the technician even gave me tips and showed me how to change the filter. Thank you KNOW.

    Review furnace install
    Linda P.
  • KNOW Heating has done the maintenance on our furnace and air conditioner for the past 2 years and I must say we have not had a problem one with our equipment ever since. It's great not to have to worry about our heating and cooling.

    Review customer service product installation
    Brandon S.
  • Just wanted to thank you for taking such good care of our AC this spring, and we look forward to your fall maintenance special to schedule for our furnace. We are very pleased with the service and will reccomend your company to our friends and family.

    Review emergency service
    Jenny M. & Amanda L.