Ultra Violet!

There are other ways to help eliminate airborne allergies. You can install an Ultra Violet Lite.

Highly Effective- Eliminates up to 99.9% of mold spores in your system and kills up to 87% of certain airborne bacteria passing by the systemHighly Efficient- Helps to maintain system efficiency and airflow, which saves money by not having to have your system coil cleaned as oftenLong Lamp Life- SmartLamp™ technology optimizes efficiency of lamp run time, and LED lets you know when lamp replacement is neededSafe- Sealed unit design and multiple interlocks prevent accidental contact with UV rays5 year warranty

http://www.i-hvac.net/ultravioletlights.asp