Radon Pressure Differential Project; Phase II -Infiltration
Testing has been done on 50 central Florida homes to assess and characterize house infiltration rates in new (age five years or less) Florida homes. These 50 were drawn randomly from a sample of 70 homes which had been previously tested to determine house airtightness, air distribution system leakage, and pressure differentials. The 50 homes had an average airtightness of 7.31 air changes per hour at 50 Pascals (ACH50). Significant leaks were found in the ductwork in a majority of homes tested, both on the supply and return sides of the air handler. When the air distribution system was sealed off, house ACH50 decreased to 6.53, indicating that 10.7% of the house leak area is in the duct system.
Florida Solar Energy Center and Cummings, James, "Radon Pressure Differential Project; Phase II -Infiltration" (1990). FSEC Energy Research Center®. 861.