Aprilaire Modulating Steam Humidifier w/ Model 850 Fan Pack

Note: The Aprilaire 5558 is a wall mounted humidistat kit for this model. It is sold separately. The Aprilaire 866 is a whole house humidifier with modulating output and a fan pack. This modulating capability allows the unit to meet a tighter relative humidity control for a much more comfortable environment. This model is capable of humidification of up to 6,200 feet and has a maximum steam capacity of 34.6 gallons per day. This Aprilaire humidifier provides humidity in the form of steam to conditioned space through the included fan pack. This fan pack includes a wall mounted discharge grill with a fan blower assembly and stainless steel dispersion chamber. This provides ductless humidification throughout the home. This model generates steam by energizing electrodes that connect to water in a disposable canister. To modulate this steam output, a modulating control must be used. Proper water level in the canister is maintained through cooperating drain and fill valves. Adding humidity through steam is an ef...