Preventative Maintenance Checklist for Your HVAC System

Check out this preventative maintenance checklist for your HVAC system.

Check out this preventative maintenance checklist for your HVAC system.

Save yourself the time, money, and energy by maintaining your HVAC system with preventative maintenance. It’s essential for the safety of everyone in the building, the efficiency of the system itself, and the comfort of all your employees and customers alike. It requires a schedule that includes routine monitoring and a thorough checklist. Keep your HVAC system functioning in top condition for as long as possible by following this preventative maintenance checklist.


Inspections are more than just visual. Set a reminder on your work calendar to have your HVAC system inspected at least twice a year. This should include seasonal start-up and run inspections. During the inspection, professionals will look for screw or latch updates, gasket repairs, and any missing or damaged screws that need to be replaced. It may also be necessary to have P-traps recharged.

Cooling Towers

A mechanical professional should disassemble the screens and gain access to the panels for inspection and repair. Close attention should be paid to the tower fill, support structure, sump, and spray nozzles. Ensure that the motor starter contacts are operating properly. A professional will also check the fill valve, gearbox, drive coupling, fan blades, and wiring. At the end, all observations and repairs should be logged for future reference.


When inspecting the pumps, close attention should be paid to any unusual noises. They also usually require lubrication at least once a year. At the couplings, the mechanic should also check for leaks.

Air Handling Unit

In the air handling unit, air filters should be cleaned or replaced. Depending on your system, the air filters should be maintained anywhere from once a month to once every three to six months.

Condenser Coil

The condenser coil usually only requires simple cleaning. If necessary, a professional will have to remove a panel to gain access at which point it’s only necessary to apply a coil cleaner and wipe it off.

Direct Pressure Systems

The superheat temperature of direct pressure systems should be between 10 to 20 degrees Fahrenheit. The manufacturer of your HVAC system has specifications for the evaporating temperature that corresponds with the measured suction line pressure. The actual suction line temperature should also be measured. The difference between those two numbers is the superheat temperature.


At Critical Systems, the people come first, from our employees to our customers. We strive to attract and develop the best talent in the business. Our goal is to deliver innovative solutions for the purpose of making every building secure, efficient, and effectively managed.

Serving the Washington D.C., Northern Virginia, and Baltimore regions, SEBCSI provides innovative solutions for your commercial building or facility. Visit our website and follow us on FacebookTwitter, and Google+ today!


This entry was posted on Friday, April 13th, 2018 at 11:14 am. Both comments and pings are currently closed.

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