Although you are not required to perform regular maintenance checks, it is sometimes necessary. Even without noticeable defects, we recommend getting an air conditioner checked at least once a year to ensure it’s performing at its best. Here are the signs to be on the lookout for that may indicate an air conditioner needs immediate maintenance.

• If your unit makes more noise than usual, the filters may be clogged. Clean the unit by removing dust with a vacuum cleaner. If the same noise persists, or you hear a chatter or rumble sound, there could be a mechanical issue.

• If it takes an air conditioner takes longer to cool a room, then the coolant level is too low.

• If you see higher energy costs from your air conditioner, that could mean the unit is not installed correctly and needs to be checked.