Web Guide to Improving Existing Ventilation in California Homes and Apartments

October 25, 2012

The RESAVE website is a guide for homebuilders and energy auditors working in California on how to improve ventilation in existing residential buildings. A good mechanical ventilation system can help protect buildings and their occupants. Inadequate ventilation often leads to increased levels of moisture and pollutants in a home.


RESAVE is a California Energy Commission (CEC) Public Interest Energy Research (PIER) Program whose overall goal is to facilitate the reduction of energy and peak power spent in homes to condition air that enters from outdoors.

Infiltration, the uncontrolled exchange of air through leaks and penetrations, typically accounts for over one-third of the total space conditioning energy. New homes typically spend the same fraction of energy on mechanical ventilation. This program aims to reduce ventilation and infiltration related peak load and energy costs by 25 to 50 percent.

More on the RESAVE program:



Allan Chen