The Aprilaire Model 600 Automatic Whole-house Bypass Duct Mounted Humidifier features the, new for 2011, Model 60 Digital Humidistat Controller with a built-in blower activation relay. This newly designed model features a built-in bypass damper and utilizes new evaporative technology to minimize water use. Gravity pulls water down through the Aprilaire Model 35 water panel while the air flow from your home’s ductwork evaporates the water. The Aprilaire Model 600 Automatic Whole-house Bypass Humidifier is truly automatic when used with the Model 60 Digital Humidistat Controller, with built-in blower activation relay, and outdoor sensor (both are included with purchase). The Aprilaire Model 600 Automatic Whole-house Bypass Humidifier has a built-in damper that is conveniently labeled for summer and winter settings taking out the guesswork. This unit has an evaporative capacity of 0.70 gallons per hour with a water flow through rate of 3 GPH. This unit is capable of humidifying a tightly-constructed home up to 4,000 square feet in size. The Aprilaire Model 600 Automatic Whole-house Bypass Humidifier is the best performing bypass humidifier on the market and may be the perfect solution for your home. If you prefer not to use the included
then the Model 60 Digital Humidistat Controller can be used in manual mode while still providing vital service, temperature and relative humidity indicators. Like all hardwired electrical devices, professional installation is recommended.