Video Resources

Learn about Cleanliness Verification

ACR, The NADCA Standard outlines three methods for verifying cleanliness immediately after cleaning: Visual Inspection, Surface Comparison Test and NADCA Vacuum Test. The following videos detail how to perform these methods.

Surface Comparison Test

Method 2: The Surface Comparison Test may be used to determine cleanliness of both non-porous and porous HVAC component surfaces. The component’s surface conditions are evaluated by comparing visible characteristics of the test surface before and after implementing a specific procedure of contact vacuuming.

NADCA Vacuum Test

Method 3: NADCA Vacuum Test is used for scientifically evaluating particulate levels of non-porous HVAC component surfaces. Using this procedure, a NADCA Vacuum Test Template is applied to the component’s airside surface. A vacuum cassette with filter media is attached to a calibrated air sampling pump and the open face of the filter cassette is passed over two 2 cm x 25 cm openings within the template.

Learn About Dryer Exhaust Duct Performance Testing

NADCA's Dryer Exhaust Duct Performance (DEDP) Test provides a measurable methodology for verifying residential-type dryer exhaust duct performance.