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Aprilaire Model 600 Review

Overall Rating:
4.9 out of 5 stars
Aprilaire Model 600Click to Enlarge

Aprilaire Model 600

With a coverage area of up to 4,000 sq ft, the Aprilaire Model 600 Whole House humidifier is the perfect choice for people with big houses. The need to have several units working around the home is cleverly eliminated by distributing evaported air through your existing air ducts. With completely automatic controls, the unit is developed to work effectively in all year round weather conditions.

Review Details

One of the best features with this model is the in-built bypass damper. Not only does this mean you will have both winter and summer settings (which take the guesswork out of the humidity levels you need), it also means there are fewer parts that need to be installed. The unit is highly revered for its low maintenance and repair costs

The Aprilaire Model 600 also comes with an outdoor sensor which automatically adjusts the level of humidity. This feature efficiently reduces condensation in your duct system, hereby reducing the chances of mold.

What We Liked

  • Advanced Technology Bypass Damper
    The bypass damper will automatically save money on water usage. It works by
    1) Utilizing gravity, to pull the water through a panel, and
    2) Using the air-flow in the ducts, to evaporate the water.
  • Completely Automatic
    The Aprilaire Model 600 can be programmed and left to do its job with little or no human intervention. It comes with both winter and summer settings, the included outdoor sensor will adjust humidity levels accordingly.
  • Low Maintenance
    The water panel can be used 12 months before it needs to be replaced. All other parts such as the valve solenoid and water distribution tray will only need replacing every 5 years.
  • Ultimate Convenience
    With the Aprilaire Model 600 there is little cleaning required, units and water will not have to be moved from room to room, and it’s totally silent when in operation.

What We Didn't Like

  • Professional Installation
    Aprilaire recommends you have this humidifier installed by a professional (see our partner banners at the right for free local quotes). This does add to the overall cost, however, once installed, it won’t need replacing for many years.
  • Water Conservation
    Unevaporated water does not drain away and can collect. Therefore, it’s prudent to make sure it has an adequate drainage option.


Aprilaire have brought many whole house humidifiers to the market in the past. Considering this latest model will work with the model 60 digital control, it’s the perfect answer if you’re looking to replace or upgrade a previous model. It’s highly revered for its ability to cover a large area and is incredibly reliable. Overall, for the money, there are not many other manufacturers that can come up to the standard this unit offers.

Review by AirReflect ©
Last modified: April 21, 2013 (Prices are updated daily)
Aprilaire Model 600
Dimensions (L x W x H):
16 x 11 x 16 inches
9.8 lbs
Power Supply:
110 Volts, 60 Hz
0.5 Amp
Coverage Area:
4000 square feet
Humidifying performance:
16.8 gallons per day
Speed control:
Yes, 7 speeds
Cool Mist:
Warm Mist:
Automatic Shut-Off:
Antimicrobial Protection:
Empty Tank Indicator:
5 years
Additional Features:
Bypass Damper
Digital Controls
Outdoor Sensor

Aprilaire Model 600 Prices

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