Whole house humidifier, manufactured by Research Products Corp. The Model 700A Power Humidifier was designed with ease of service in mind. Installed on the warm air plenum of a forced air furnace, this model utilizes the famous Aprilaire flow through design that constantly flushes away trouble causing minerals not deposited on the replaceable water panel and provides exactly the right amount of moisture in vapor form. Comes with the digital Dispay Style control system. This system is so advanced it raises and lowers the humidity set point as the weather changes for optimum comfort.

* Calculations based on (1) 20?F. and 70% R.H. Outside Air. (2) 70F. and 35% R.H. Room Air. (3) Internal Moisture Gain of 1lb./hr. (4) 70% Blower Operation. (5) 8 ft. ceiling height.