The Global Energy Recovery Ventilator Market Size is Anticipated to Exceed USD 8.17 Billion by 2033, Growing at a CAGR of 8.48% from 2023 to 2033.An ERV, or energy recovery ventilator, is a mechanical device that helps exchange the heat and humidity of the air coming into the building and that of the outgoing air. Energy recovery ventilators are applied in HVAC systems, they are either ducted or attached to a wall.