Modern homes are built to be energy efficient, but tightly sealed construction often limits natural air exchange. Over time, this can cause indoor air to feel stale, humid, or stagnant. Common signs include lingering odors, window condensation, uneven humidity, and air that feels heavy even when the home is clean.

An HRV or ERV system solves this by continuously exchanging indoor and outdoor air while preserving the heating or cooling energy already inside your home.