Inspected area of the furnace to see what humidifiers we would be able to install. We do not have room for the power humidifier but there is room for the steam humidifier and the bypass humidifier. The bypass humidifiers that we could install is the General Aire 4200 (slim) or the April Aire 600. The steam humidifier model is the Aprilaire 865. Customers would like to discuss how to fit the humidifier. Thank you for your time. It was a pleasure meeting you both.