There are commercially produced systems to do this. They're called ERV or HRV: ERV: Energy Recovery Ventilation eg: https://ephoca.com/aio-wall-mounted-pro/ ht

There are commercially produced systems to do this. They're called ERV or HRV: ERV: Energy Recovery Ventilation eg: https://ephoca.com/aio-wall-mounted-pro/ https://ephoca.com/aio-wall-mounted-pro/ An example of a less expensive module sized for a whole home: Panasonic intellibalance https://na.panasonic.com/us/home-and-building-solutions/ventilation-indoor-air-quality/energy-recovery-ventilators/intelli-balancetm-100-balanced-air-solution-cold-climate-erv-50-100-cfm https://na.panasonic.com/us/home-and-building-solutions/vent...