An air dehydration and heating device can include a first evaporator serpentine and a second evaporator serpentine in parallel and in series with at least one condenser serpentine; a first outside air intake damper for the first evaporator serpentine and a second outside air intake damper for the second evaporator serpentine; a fan motor to drive a fan; a drying air outlet duct to receive air moved by the fan, the air having passed through at least one of the first evaporator serpentine and the second evaporator serpentine and at least one of the at least one condenser serpentine; a return drying air intake damper in a return drying air intake duct; and a processor to control temperature and humidity of drying air in the drying air outlet duct.