The First Now House

The Retrofit Process: Lighting


Replace lighting

We will replace all incandescent light bulbs with energy saving compact fluorescent light bulbs (CFLs). These lights use only one quarter of the energy of an ordinary incandescent bulb and last about eight to ten times longer. Only 10% of the energy consumed by incandescent bulbs generates light; the rest just makes the bulb hot.

The Retrofit Process

To achieve our goal of a near zero energy retrofit we made the following changes to this home. As all existing houses have a unique set of conditions and characteristics, the application of the Now House process to another house would produce different design specifications. What follows is not a prescription for the near zero retrofit of all homes.