• Robin B.

    “The staff working for Advanced Mechanical is always pleasant and professional. They understand what we need and make sure we are properly serviced.”

Seasonal HVAC Maintenance Schedule

A regular HVAC maintenance schedule is critical to the overall health of your unit. At AMS, we suggest that all of our customers sign up for an Annual Maintenance Plan, as well as keep up to date with our HVAC Maintenance Checklist.

While most HVAC maintenance can be done at any time of the year, the following is a Seasonal Schedule that you can follow to keep your system in proper working order. It should be noted that these preventative measures will not replace the specialized maintenance provided by an HVAC expert, but following a regular inspection plan will help to prevent major breakdowns of your unit.

You can contact us at any time to set up a Monthly, Annual or Semi-Annual HVAC Maintenance Plan. Our experts will fully evaluate and fix any issue with your system at the time of inspection.

Seasonal HVAC Maintenance Schedule


  • Area surrounding your outdoor unit should be cleaned and cleared
  • Remove all debris, branches, leaves, grass clippings, etc.
  • Check for corrosion
  • Clear vents of obstructions, dust, and other buildup
  • Inspect lines for leaks, cracks, wear and tear
  • Clean drain pans


  • Turn off water that feeds into furnace humidifier
  • Change filters
  • Properly set thermostat
  • Hose down outdoor unit (try to avoid electrical connections)
  • Check refrigerant level and fill to proper level if needed
  • Clear all debris from around the outdoor unit
  • Prepare one-gallon solution of warm water and few drops of dish soap; pour through condensate lines to clear and clean blockages
  • Clean evaporator and air conditioning coils
  • Clean and adjust blower components


  • Inspect gas/oil connections
  • Check gas pressure
  • Check burner combustion
  • Inspect heat exchanger
  • Clear debris from around the outdoor unit
  • Change humidifier filter
  • Turn on water that feeds furnace humidifier
  • Change filters
  • Adjust supply register if you have multiple floors: open supply registers on lower floors and close on upper floors to ensure better heat flow
  • Calibrate thermostat

No matter what time of year it is, you should always be aware of signs that indicate your HVAC system is not working properly. These include: higher than expected energy bills; inconsistent air flow; buildup in filters and ducts at faster than normal rate; significant differences in temperature between rooms; and any odd or unnatural noises and smells coming from your unit.

Remember, regular inspection and maintenance of your HVAC unit will ensure that your system operates efficiently for a long, long time. Improper maintenance, on the other hand, will lead to system breakdowns that can be costly to fix.

At AMS, we want the best for all of our customers. Which is why we take seasonal maintenance seriously.