Infiltration measurements in audit and retrofit programs.

A model that relates fan pressurization results to infiltration values during the heating season is the basis for infiltration estimates in several different audit programs. Describes the model and presents validation results. The model is used in three different audit strategies. The first is an energy audit to determine economically optimal retrofits for residential buildings, based on actual on-site measurements of key indices of the house. Measurements are analyzed on a microprocessor and retrofit combinations compatible with minimum life-cycle cost and occupant preferences are determined. The second uses graphical techniques to make infiltration calculations while the third is a non-instrumented walk-through audit that was developed as a standard reference in the residential conservation service program.