Keeping the air clean in a house could be one of the toughest things for a consumer to maintain. There are many different effects of air pollution on humans that can be prevented. The fact is that the air in a house is dirtier than the air outside. Some of the effects of air pollution in humans can result in headaches, nausea, and allergic reactions. Worst case scenarios can result in upper respiratory infections such as bronchitis and pneumonia. There are a few things that a person could do to help clean the air in their house. Just by opening the windows in the house will help bring in fresh air and get the pollutants out. Having a filter for the air conditioner system will help control the dust. Having a good filter to clean the air before it goes through the ac system and re-enters the house is essential. Trane offers a product called CleanEffects. The Trane CleanEffects utilizes patented, breakthrough air cleaning technology to remove up to an astounding 99.98% of airborne allergens and pollutants from the air that passes through the filter. Having the ducts sanitized throughout the house will help kill the mold and prevent it from growing. Unless the house has metal duct it is impossible to clean the mold off with out destroying the duct.