By Mary Bubala

BALTIMORE (WJZ) — Just as a tune-up for your car can improve gas mileage, a yearly tune-up of your cooling system can improve efficiency.

Mary Bubala reports now is the time to do it as we head into spring.

Your pre-season check up can be done by a contractor who will check thermostat settings, the coils and blower components.

You can change the air filter on your own.

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