Humidifiers
Turning your temperature up in the wintertime will keep you warm but won’t increase your home’s humidity level. Daily activities such as showering, cooking and doing laundry don’t produce enough moisture to keep your home’s air from being too dry. According to medical experts, many viruses thrive in low humidity increasing the likelihood of catching colds, flu and upper respiratory ailments. The American Society of Otolaryngology even reports that it is important to prevent an overly dry environment because it makes people more susceptible to infection.


Whole House Humidifiers
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Model 700
The Aprilaire Model 700 Whole-House Humidifier features truly automatic control, so there's never a need to manually control the humidifier—though it can be installed in manual mode, if desired.
Complementing any central heating and cooling system, the Aprilaire Model 700 Whole-House Humidifier:
Utilizes an outdoor temperature sensor for monitoring even the slightest changes in outdoor temperature
Delivers up to 50% more moisture in comparison to competitive units
Has an evaporation capacity of 0.75 gallons per hour—among the highest capacity humidifiers sold
Humidifies tightly-constructed homes up to 4,200 square feet in size
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Model 600
The Aprilaire Model 600 Whole-House Humidifier features truly automatic control, plus a built-in bypass damper, which means fewer parts to install. The bypass damper is conveniently labeled for both summer and winter settings, allowing you to set it for the entire season with no guesswork involved. The Aprilaire Model 600 Whole-House Humidifier is simply the best performing bypass humidifier on the market.
The Aprilaire Model 600 Whole-House Humidifier:
Features the same performance benefits of other Aprilaire Humidifiers
Delivers up to 50% more moisture in comparison to competitive units
Has an evaporation capacity of 0.70 gallons per hour
Humidifies tightly-constructed homes up to 4,000 square feet in size
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Model 500
The Aprilaire Model 500 Whole-House Humidifier features a built-in bypass damper and is designed for use in small to mid-size homes with automatic digital control for premium performance and convenience.
The Aprilaire Model 500 Whole-House Humidifier:
Installed in either your living area or central heating and cooling system ductwork
Comes equipped with a drain to flush minerals from the unit
Has an evaporation capacity of 0.50 gallons per hour
Humidifies tightly-constructed homes up to 3,000 square feet in size
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Model 400
The Aprilaire Model 400 Whole-House Humidifier features a built-in bypass damper and utilizes new evaporative technology to minimize water use. Gravity pulls water down, while the wicking action of the Water Panel ® draws it back to the top, using 100% of the water delivered to the unit.
The Aprilaire Model 400 Whole-House Humidifier:
Features truly automatic control
Eliminates standing water, making it the perfect choice for homes with septic systems, locations where a floor drain is not available or families interested in water conservation
Has an evaporation capacity of 0.70 gallons per hour
Humidifies tightly-constructed homes up to a 4,000 square foot in size.