I am a skilled professional that works for a Dor-Mar Heating & Air Conditioning company. I recently completed a job for a customer who was concerned about the quality of their indoor air. They had noticed a musty smell in their home and wanted to have their air ducts cleaned. I started by performing a WH flush on the air ducts to remove any debris or contaminants that could be causing the smell. The WH flush is a process that involves using high-pressure water to clean the ducts from the inside out. After the WH flush, I performed a radon test to determine the level of radon in the air ducts. Radon is a naturally occurring gas that can be harmful to human health if it is present in high levels. The radon test involved placing a radon detector in the air ducts for a period of time. The detector measured the level of radon in the air and provided a reading. Based on the results of the WH flush and radon test, I recommended that the customer have their air ducts cleaned and sealed. Thi