Maintenance Checklist

Seasonal AC Maintenance Checklist: What You Need to Know

As the temperatures start to rise, it’s important to make sure your air conditioning unit is in top shape. Hiring a professional for AC maintenance in Manassas can help keep your unit running efficiently, prevent costly repairs, and extend its lifespan. So, before the heat becomes unbearable, here’s a seasonal AC maintenance checklist to keep your unit running smoothly.

Clean or Replace Air Filters

The first step in maintaining your AC unit is to clean or replace the air filters. Dust, dirt, and other debris can build up in the filter, obstructing airflow and making your unit work harder than it needs to. This not only reduces efficiency but also increases energy costs. It’s recommended to check and clean or replace your air filters every 1-3 months.

Clean Condenser Coils

The condenser coils in your AC unit release heat outside. Over time, however, they can become dirty and clogged with debris, hindering their ability to release heat efficiently. Therefore, it is recommended that you clean the condenser coils at least once a year, preferably before turning on your AC for the first time in the season.

Check Refrigerant Levels

Refrigerant is the substance that cools the air in your AC unit. If the levels are too low, it can lead to decreased cooling performance and even damage to your unit. Make sure to have a professional check and refill refrigerant levels as needed.

Check and Clean Evaporator Coils

The evaporator coils are responsible for absorbing heat from the air in your home. Over time, these coils can become dirty and covered in grime, reducing their ability to cool the air efficiently. Regular cleaning of the evaporator coils can help improve AC performance and energy efficiency.

Inspect Ductwork

Leaky or damaged ductwork can lead to reduced airflow and poor cooling performance. It’s important to inspect your ductwork for any holes, cracks, or damage and have them repaired as needed. This will not only improve AC performance but also help save on energy costs.

Lubricate Moving Parts

The moving parts in your AC unit, such as the fan motor and blower, need to be lubricated regularly to ensure smooth operation. Neglecting this maintenance task can lead to increased wear and tear on these components, leading to costly repairs down the line.

Test Thermostat

Before relying on your AC unit during the hot summer months, make sure to test your thermostat. This will ensure that it is properly calibrated and functioning correctly. If you notice any issues, have a professional inspect and repair or replace the thermostat as needed.

Schedule Professional Maintenance

While some maintenance tasks can be done yourself, it’s important to schedule professional AC maintenance at least once a year. An experienced technician can inspect all components of your unit and address any potential issues before they become major problems. Understanding the benefits of regular HVAC maintenance can help you save time and money and ensure your AC unit is ready for the summer season.


By following this seasonal AC maintenance checklist, you can ensure that your air conditioning unit is in top shape and ready to keep you cool and comfortable all summer long. Don’t wait until the heatwave hits to take care of your AC – start now and beat the rush! Your future self will thank you for a well-maintained, efficient AC unit when the temperatures are soaring outside.