HERS Rater Now is equipped with the knowledge and expertise to handle your duct testing needs in a professional manner. our services are Hers Test, Hers Testing, Hers Testing Services, Residential Hers Test, Commercial Hers Test, New Home Hers Testing, Quality Hers Testing, Hers Testing Near Me, Hers Testing Companies.This test is performed by first sealing off all supply and return registers for that system using special sealed “pans” or adhesive masking materials. A diagnostic fan flow meter is then connected to the system and records the leakage flow.