Ventilation without the energy penalty

Modern commercial buildings bring in large volumes of outdoor air for indoor air quality, but heating or cooling that air is a major load. Air-to-air heat recovery vents stale air while transferring its energy to the incoming fresh air, satisfying ventilation codes without a large heating or cooling penalty.

Suitable exchanger types and how they work

Plate heat-recovery ventilators recover sensible heat only; energy-recovery ventilators (ERVs) add a desiccant or membrane layer to also transfer moisture. Rotary enthalpy wheels recover both and suit humid climates. Our deep selection guide compares them in detail.

Design considerations for buildings

Size the recovery device to the outdoor-air fraction, not total airflow, to maximize payback. Provide a summer bypass, manage condensate and defrost in cold climates, and respect ASHRAE 62.1 ventilation rates. Choose the core material for the building’s air quality and maintenance expectations.