biannual HVAC tuneupSome homeowners are surprised to learn that not only should they schedule one HVAC tuneup every year, but to be in the best shape, they should have two maintenance checkups annually — one in the spring for the air conditioner and one in the fall for the furnace.

So what’s the deal with this biannual HVAC tuneup regimen? Is it really necessary? Read on and find out why you should consider scheduling maintenance twice a year.

Why You Need Twice-a-Year Maintenance

The equipment you use to cool your home is different from the unit you use to heat it. An air conditioner involves refrigerant being pumped from the outdoor side of the AC (the condenser) to the inside section of the unit, where it absorbs the heat in the home and then is exhausted outdoors.

The furnace involves the indoor side of the HVAC system exclusively, including the burners and heat exchanger. Furnaces that are fueled by gas give off carbon monoxide, so this needs to be measured and monitored.

Both sides of the HVAC — the AC and the furnace — share equipment that needs to be checked twice a year. This equipment gets a big workout in winter and summer, so it should be inspected regularly, with all parts replaced as they show signs of wear.

What the Checkups Should Entail

In the spring, your HVAC service technician should perform these tasks:

  • Check refrigerant level.
  • Clean condenser and evaporator coils.
  • Inspect and clean condensate drain.
  • Inspect the outdoor fan motor and blades.
  • Inspect the indoor blower assembly.
  • Inspect the refrigerant tubing and the compressor.

With the fall HVAC inspection, the tech will check the following:

  • Inspect and adjust the fan switch.
  • Check the pilot and pilot assembly.
  • Inspect and clean burners.
  • Inspect the heat exchanger for cracks.
  • Measure CO (carbon monoxide) levels.
  • Check for leaks in the gas line.
  • Inspect the flue.

In both the fall and the spring, these tasks should be performed:

  • Measure blower amperage and voltage.
  • Test and calibrate the thermostat.
  • Inspect the wiring and electrical components. Replace frayed wires.
  • Inspect ductwork for leaks.

For more information on getting a biannual HVAC tuneup, contact Mowery Heating, Cooling and Plumbing of Indianapolis.