What Happens During a Furnace Inspection

Furnace Inspection Procedure | Plumbing and Heating SpecialistTo keep your furnace operating at its best, it’s important to have it inspected regularly. Ideally, you’ll want an HVAC technician to look at it twice a year (in the spring and fall) so that you can resolve any relatively small problems before they become bigger (and more expensive) to fix.

What happens during a furnace inspection? There is much more to it than changing your filter and making sure that your thermostat works properly. Here is a list of some of the work the technician will accomplish during the inspection.

  • Inspect and clean the furnace’s blower motor, along with the wheel and housing.
  • Check the combustion motor for any obstructions and lint. Clean it if necessary.
  • On a gas furnace, the technician will check for any gas leaks.
  • Perform an inspection on the condensate lines and the pan. If the pan needs draining, the technician will do so.
  • Check the evaporator coil.
  • Inspect the burner; clean it if necessary.
  • Check the ignition, the safety controls and adjust as necessary.
  • Perform an inspection on the heat elements/heat exchanger.
  • Check the flue system for corrosion.
  • Inspect all electrical systems, including the control box, the connections and the wiring.
  • Check the air filters, and replace if necessary.
  • Examine the ductwork for leaks.
  • Run system startup to look for errors.
  • Listen for any sounds that may indicate a problem.
  • Be mindful of any unusual odors. If any are detected, track down their source.
  • Check the furnace system pressures (including high and low side, as well as manifold).
  • Measure temperature rise and adjust.
  • Inspect the vent system while the furnace is on.

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