Indoor Air Quality > Humidifiers

Specifications: available in both by-pass and power models, unique flow-through design introduces moisture into dry air, applicable to most forced air installations,

The Model 700 power humidifier (formerly Model 768) features truly automatic control, so there's no need to ever manually control the humidifier. It is also designed with ease of service in mind. It utilizes an outdoor temperature sensor for monitoring even the slightest changes in outdoor temperature. This high-tech humidification system can deliver up to 50% more moisture in comparison to competitive units. With flexibility in mind, it can even be installed in manual mode if necessary. Complementing any HVAC system, the 700 has an evaporation capacity of 0.75 gallons per hour, among the highest capacity humidifiers sold. If you own a larger home and want the best, then this may be the humidifier for you, as it will handle up to 4,200 square feet if your home is tight in construction

The Aprilaire Automatic Humidifier Model 600 takes humidifier innovation to the next level and performs as good as it looks! It offers all of the performance benefits of our other technologically-advanced computer-equipped automatic humidifiers and it’s easier than ever to have installed because it includes a built-in bypass damper, which means fewer parts to install. Plus, the damper is conveniently labeled for summer and winter settings, allowing you to set it for the entire season with no guesswork involved. Just set it and let your humidifier run automatically and it will deliver up to 50% more humidity, compared to other competitive units on the market. It also can be installed in manual mode if needed. The Model 600 has an evaporative capacity of 0.70 gallons per hour and is ideal for a home with up to 4,000 square feet if it’s tightly constructed. We believe it’s the best performing bypass humidifier on the market!

The Model 550 bypass humidifier is our economy unit designed for smaller homes. This unit utilizes a manual humidifier control that can be installed in the living area or on the furnace ductwork. Along with all other models (except model 448) it is equipped with a drain to flush minerals from the system. The model 550 has an evaporative capacity of 0.50 gallons per hour and can handle up to 3,000 square feet if the home is tightly constructed.

What is “RELATIVE HUMIDITY” anyway?
Relative humidity refers to the actual amount of moisture in the
air expressed as a percentage of the amount of moisture the air is
capable of holding.
This means that if the relative humidity of the air inside your
home is 5%, the air has the capacity to hold 20 times more moisture
than it contains. If the relative humidity is 100%, then the air is
completely saturated with moisture. It’s important to note that
air will continue to add moisture (humidity) until it reaches its
saturation point.
Temperature affects relative humidity, too. Warm air can hold
more moisture than cold air. In the winter, when 30º outdoor air with
a relative humidity of 50% enters your home and is heated to 70º, its
relative humidity plunges to just 12%! Without supplemental moisture
your home quickly becomes “bone dry.”

How does humidity AFFECT my comfort?
Since the air in your home is always trying to reach its saturation
point, it will absorb water wherever it’s found. That means it is stealing
moisture from the bodies of you and your children, your pets, your
furniture and even your house plants. By giving up moisture to the
air, your skin, throat and nasal passages dry out and crack, leading to
various physical discomforts. That’s why many doctors recommend
humidifiers for allergy and asthma sufferers.
Research has shown that 30% – 60% relative humidity is ideal.
Outside this range, bacteria, fungi, viruses and mites thrive and
multiply. As these creatures increase in number, so does your risk
of being adversely affected.

Application:

Flow-through humidifier that will approximately handle a 2500 sq. ft. home. Installs on vertical warm air supply or cold air return plenum.

Unit size: 15" wide x 11-1/2" high x 9" deep

Plenum opening: 10-1/4" wide x 9-1/2" high

Bypass duct: 6" diameter (collar supplied)

Evaporative principle: Forced warm air heating systems create a pressure differential that diverts some heated air to the humidifier through a bypass duct. There, the warm air absorbs moisture from a water-soaked evaporator pad and then rejoins the primary warm air stream for distribution throughout the living area. A solenoid valve and patented distribution tray meter and disperse water uniformly across the evaporator pad. Unevaporated water drains from the unit.

Evaporative media: 990-13 Evaporator Pad. Designed for high output with minimal hard water scale accumulation. UL listed.

Water supply: Dependable stainless steel solenoid valve with monel wire mesh filter that protects the precision machined Teflon flow-control orifice. Saddle valve supplied. Use 1/4" copper tubing.

Drain connection: High capacity 5/8" drain and hose prevents clogging. Includes 15' vinyl hose except recircating models.

Electrical: 24 V. 60 Hz

Controls: Manual air shutter for summer shut-off affords some control of humidifier output. Model 1042 LH includes GENERALAire H-86 wall/duct mount humidistat

Construction, materials and styling: Attractive cabinet made from durable, non-corrosive, high temperature materials for long service life.

Versatility: Right or left hand bypass installation. May be installed on up-flow, counter-flow or horizontal furnaces or air handlers.

Serviceablity: Thumbscrews allow easy access to distribution trough, drain pan and evaporative pad for quick, easy cleaning and service.

Easy installation: Most important components are included. Outboard and keyholed screw holes and simple thumbscrew assembly speeds installation. Patented water distribution tray reduces need for critical leveling.