Lifebreath 100 DEF is a heat recovery ventilator (HRV) designed to provide fresh air into a dwelling while exhausting an equal amount of stale air. During the winter months, the incoming cold fresh air is warmed by utilizing the heat recovered from the stale air before it is exhausted to the outdoors. During the summer months, the cool outgoing stale air from the air-conditioned dwelling is used to help cool the incoming fresh air.

Key features of the Lifebreath 100 DEF include:

• Energy efficiency: The HRV's efficient heat recovery core helps to reduce energy costs by transferring heat from the exhaust air to the incoming fresh air.