Modine Manufacturing Co. has announced the release of the new condensing/hybrid and propane heat options for the Atherion Commercial Packaged Ventilation units. Designed for expanded installation flexibility and increased heating efficiency for maximized utility savings in cold northern climates, the Atherion Model MPR is the ideal solution to effectively and efficiently meet the challenge of heating high volumes of outside air for ventilation. The D-Cabinet natural gas heat option includes several condensing (90+ percent efficiency) options, as well as hybrid options. Additionally, propane heat options (81 percent thermal efficiency) complement the already wide range of natural gas and electric heat options.