Sano Heating & Air Conditioning encourages homeowners to schedule routine air duct cleaning services in Tustin, CA. No matter how clean your home is, dust will build up in your ducts. Dust is like a sponge that soaks up other pollutants and continues to release them into the air over time. That can result in persistent unpleasant smells throughout a home. It can also increase the indoor pollution levels. Through professional duct cleaning, you can eliminate all that potentially harmful debris.