About Indoor Air Quality Humidifier
Aprilaire Model 400 Humidifier
- Bypass evaporative unit adds 17 GPD for up to 5,000 sq ft tight homes; drainless with recirculation.
- Aprilaire Model 500 Humidifier
- Compact bypass; 12 GPD for up to 3,600 sq ft; automatic digital control.
Aprilaire Model 600 Humidifier
- High-capacity bypass; 17 GPD for up to 4,000 sq ft; built-in damper.
Aprilaire Model 700 Humidifier
- Fan-powered; 18 GPD for up to 4,200 sq ft; independent of airflow.
Aprilaire Model 800 Steam Humidifier
- Canister steam; 23.3 GPD max for 6,200 sq ft; duct-independent.
GeneralAire Model 570M Humidifier
- Fan-powered evaporative; uses vapor pad for moisture; for mid-sized homes.
GeneralAire Model 900 Humidifier
- Elite bypass; up to 2,800 sq ft; kinetic trough, auto damper.
Popular Products
Aprilaire - Model 400 Humidifier
Model – 400 Humidifier
Need to maximize your humidity control with minimal water usage? The Aprilaire Model 400 Humidifier is the solution for you. The Model 400 is a drainless humidifier, featuring 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.
Right Choice
The Aprilaire Model 400 Humidifier is a whole-home solution that helps you achieve total comfort through humidity control. The Model 400 features drain-free operation, eliminating standing water. This makes it the perfect choice for homes with septic systems, locations where a floor drain is not available or homeowners interested in water conservation. It is installed by a local HVAC professional.
Features
- Minimal water usage
- No drain required
- No standing water
- Delivers optimum levels of humidity control with the Automatic Digital Humidifier Control. You never have to monitor your settings or wait until you feel uncomfortable.
- Provides vital service, temperature and relative humidity indicators in manual mode as well.
- Humidifies tightly constructed homes up to 4,000 square foot in size.
- Has an evaporation capacity of 0.70 gallons per hour.
Aprilaire - Model 500 Humidifier
Model – 500 Humidifier
The Aprilaire Model 500 Humidifier is economical and a proven performer designed for small to mid-sized homes. The Model 500 features:
- A built-in bypass damper, which means less parts to install
- Truly automatic control, but it can also be installed in manual mode
Right Choice
The Aprilaire Model 500 Humidifier is a whole-home solution that helps you achieve total comfort through humidity control. The Model 500 is installed in your central heating and cooling system ductwork by a local HVAC professional.
Features
- Delivers optimum levels of humidity control with the Automatic Digital Humidifier Control.
- Provides vital service, temperature and relative humidity indicators in manual mode as well.
- Humidifies tightly constructed homes up to 3,000 square foot in size.
- Performs quietly with simple annual maintenance.
- Comes equipped with a drain to flush minerals from the unit.
- Incorporates easy right or left discharge change-over.
- Has an evaporation capacity of 0.50 gallons per hour.
Aprilaire - Model 600 Humidifier
Model – 600 Humidifier
The Aprilaire Model 600 Humidifier is one of the best-performing bypass humidifiers on the market. As a large-capacity unit, the Model 600:
- Features a built-in bypass damper, which means fewer parts to install
- Delivers up to 50% more moisture than competitive units
- Has an evaporation capacity of 0.70 gallons per hour
- Humidifies tightly constructed homes up to 4,000 square feet in size
Right Choice
The Aprilaire Model 600 Humidifier is a whole-home solution that helps you achieve total comfort through humidity control. The Model 600 uses the furnace blower to move air through a Water Panel®. It is installed by a local HVAC professional.
Features
- Delivers optimum levels of humidity control with the Automatic Digital Humidifier Control. You never have to monitor your settings or wait until you feel uncomfortable.
- Provides vital service, temperature and relative humidity indicators in manual mode as well.
- Performs quietly with simple annual maintenance.
- Incorporates easy right or left discharge change-over.
Aprilaire - Model 700 Humidifier
Model – 700 Humidifier
The Aprilaire Model 700 Humidifier is a large-capacity powered unit with big humidification performance to match the biggest of homes. The Model 700:
- 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 foot in size
- Features truly automatic control
Right Choice
The Aprilaire Model 700 Humidifier is a whole-home solution that helps you achieve total comfort through humidity control. The Model 700 uses a built-in fan that pulls heated air directly from the furnace. It is installed by a local HVAC professional.
Features
- Delivers optimum levels of humidity control with the Automatic Digital Humidifier Control. You never have to monitor your settings or wait until you feel uncomfortable.
- Provides vital service, temperature and relative humidity indicators in manual mode as well.
- Performs quietly with simple annual maintenance.
Aprilaire - Model 800 Steam Humidifier
Model – 800 Steam Humidifier
The Aprilaire Model 800 Humidifier is a steam humidifier designed for home applications where evaporative units are less practical. The Model 800:
- Accommodates crawl spaces, attics and areas of the country with milder winters and non-forced air heating.
- Provides humidity to the largest of homes (up to 6,200 square feet).
- Features truly automatic control but can be installed in manual mode as well.
Right Choice
The Aprilaire Model 800 Humidifier is a whole-home solution that helps you achieve total comfort through humidity control. As a steam model, the 865 complements non-forced air heating sources and other specialty heating systems. It is installed by a local HVAC professional.
Features
- Runs independently of your HVAC system to accommodate larger homes (up to 6,200 square feet)
- Delivers optimum levels of humidity control with the Automatic Digital Humidifier Control.
- Performs quietly and with simple maintenance. You only need to replace the canister.
- Has a capacity of 11.5, 16.0, 20.5, 23.3, and 34.6 gallons per day, depending on electrical draw.
- Uses cold water, which may be hard, soft or softened.
GeneralAire - Model 570M Humidifier
Model 570M Humidifier
- Included: Our MHX3C Manual-Control, Duct Mount Humidistat.
- For Home Sizes up to 2,000 Sq. Ft.
- Patented KineticFlo® water distribution system for maximum evaporative performance.
- Duraplast® ultra-violet stable automotive-grade plastics.
- Integral humidity control bypass damper, transformer, solenoid valve, Vapor Pad®, saddle valve, GDV3412 Code Valve, and the industries first Automatic Digital Temperature Compensating Humidistat. Note: GDV3412 Code Valve offered with automatic models only.
- Bypass humidifier mounts easily on the warm or return plenum and delivers 12 GPD.
- 24V.
- 7 Lbs.
- VaporPad® replacement: GA10 (GFI #7900). Replace 1-2 times per season.
- 10 Year Warranty.
GeneralAire - Model 900M Humidifier
Model 900M Humidifier
- Included: Our MHX3C Manual-Control Duct Mount Humidistat.
- For Home Sizes up to 2,800 Sq. Ft.
- 17 GPD.
- DuraPlast® ultra-violet stable automotive grade plastics.
- Integral humidity control bypass damper.
- Transformer, solenoid valve, Vapor Pad®, saddle valve.
- Bypass humidifier mounts easily on the warm or return plenum and delivers 17 GPD.
- 8 Lbs.
- 24V.
- 10 Year Warranty.
- Replacement Vapor Pad®: GA19 (GFI #7919) or 990-13 (GFI #7002). Replace 1-2 times per season.
