Ductz of Tampa Bay/Ductbusters | Clearwater, Fla. | ductz.com

John Munk called Ductbusters to clear out mildew growth on his air ducts.

"They did a great job and cleaned up after themselves," Munk says. "They also gave a tip on what was probably causing the problem — running an air handler without having the A/C or heat on was trapping moist air in the system. I'm very pleased with the results and hope this will help with my sinus and allergy problems."