The FV-7500 fresh air ventilator from SEMCO Incorporated (Columbia, MO) is a self-contained package that recovers up to 80% of the cooling and heating energy that would typically be lost in the exhaust air stream. Features include EXCLU-SIEVE(r), a total energy recovery wheel which recovers both sensible and latent energy without the risk of cross contaminating the fresh airstream, according to the manufacturer.