Just because an air filter is dirty, doesn’t necessarily mean it is trash. Many modern air filters are washable and can be brought back to life with a little elbow grease. Twin Air makes an air filter cleaning kit that can be used to breathe new life into an old filter. The Twin Air Bio System comes with everything you need: cleaning tub, oiling tub, liquid dirt cleaner, liquid power filter oil, contact cleaner, and rubber gloves. You can pick up a kit on Amazon.com.
