World Class Trane Installer

Keep your AC in great shape

Clean or replace the filter

Taking care of the filter is one of the most important things you can do for your air conditioner. As the system circulates air, it filters the air in your home and extracts excess moisture to help control humidity.

Air Conditioner Maintenance


The following information is for educational purposes only. Tampering with your system may void your warranty. If you have any questions about your system, call a Trane Comfort Specialist™.

Changing your filter

Why should I change my air filter?

When your system circulates and filters the air in your home, dust and dirt particles build up on the filter. Excessive accumulation can block the airflow, forcing the unit to work harder to maintain desired temperatures. The harder your unit works, the more energy it uses.

When should I change my air filter?

Clean or replace your filter twice a month during seasons when the unit runs more often. When replacing your filter(s), always use the same size and type that was originally supplied. Filters are available from your dealer. Where disposable filters are used, they must be replaced every month with the same size as originally supplied.

How do I change my air filter?

Ask your Trane dealer where the filter is located in your system and how to service it. Just be sure to replace it with the arrows pointing in the direction of the airflow.

Proactive Tips for Better AC Performance

Setting the temperature for the season

  • In the summer, place the system switch on COOL, and the fan switch on AUTO. Then set the temperature by using the indicator on the thermostat control. Now your system will cool your house whenever the indoor temperature climbs above the thermostat setting. It will shut off when the desired room temperature is reached.
  • In the winter, when the system switch is on HEAT, the system will operate whenever the room temperature falls below the temperature setting. Once the desired temperature is reached, the system will shut off.

Keep your outdoor AC looking new

Clean the enamel finish of your outdoor unit with soap and water. For stubborn grease spots, use a household detergent. Do not use lacquer thinner or other synthetic solvents as they may damage the finish.

Extend the life of your air conditioner

  • When building a new house or renovating an old one, choose light-colored roof shingles to reflect more of the sun’s heat.
  • During moderate weather, don’t use the system unnecessarily.
  • Draw blinds or drapes to block the sunlight during the hottest part of the day.
  • Install awnings over windows exposed to direct sunlight.
  • In the cooling season, don’t run kitchen and bath exhaust fans longer than necessary.
  • Don’t place lamps, TV sets or other heat producing devices beneath a wall-mounted thermostat. Rising heat from the equipment may cause the system to over-cool your house.