Filter changes are the best thing for indoor air quality. Numerous options exist to remove allergens, dust, odors, and mold but they are only effective when they are kept clean. If allergies are a problem, you may benefit from extra filtration from portable units or more effective installed filtration devices. Keeping the air dry will help reduce the amount of mold in the air. Air conditioners do a good job of removing most humidity but in the humid Louisiana air sometimes that's not enough. Dehumidifiers can help reduce the humidity and help the air feel cleaner and more comfortable.