Air to air heat exchangers will help a lot with energy loss. Now that we have a CO2 meter, I am strongly considering wiring it to an air exchanger and having a

Air to air heat exchangers will help a lot with energy loss. Now that we have a CO2 meter, I am strongly considering wiring it to an air exchanger and having a PID controller just keep the house co2 below 600-800 ppm, and the pm 2.5 below 10 ug/m3.