The Ridges Sanctuary

Join us for a program on retrofitting your home to be more energy efficient! Paul Kuenn will lead this presentation on Deep Energy Retrofitting. Deep Energy Retrofitting can allow an older house to use 75-90% less energy for heating and cooling. The average home built before the 1990s has an ACH (Air Changes per Hour) of 6-10, and houses built before the 1970s have about 15-20ACH. Even new homes average 3.9ACH. Why would you want all your heated or cooled air to leave the house that many times per hour? Using building science and PHIUS (Passive House Institute US) building standards, your home can be comfortable without being wasteful. This workshop will give you the resources you need to retrofit your home. Suitable for all ages