If keeping your indoor air clean is important to you then upgrade your existing Aprilaire or Space-Gard air cleaner the next time you need a filter change. You can upgrade your existing air cleaner with Aprilaire's newest filtering media which goes into all of our new air cleaners. The new filtering media is better than the old for many reason's including increased particulate removal efficiency, it holds almost twice as much dust and can help reduce the energy your HVAC system uses. So next time you need a filter change ask for an upgrade. It’s inexpensive, it’s easy and it’s just plain better.