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Aprilaire 500 Automatic Bypass Humidifier (Digital Control)

Aprilaire 500 Automatic Bypass Humidifier (Digital Control)

Aprilaire 500 Automatic Bypass Humidifier (Digital Control)

Availability: In stock


Quick Overview

Aprilaire 500 Automatic Bypass Whole House Humidifier with Digital Control


The Aprilaire 500 Automatic Bypass Humidifier can humidify a tightly-constructed home of up to 3000 square feet and more.

The Aprilaire 500 Automatic Humidifier is the economy version of the model 600 and is intended for use in smaller homes. It takes humidifier innovation to the next level and performs as good as it looks! It offers all of the performance benefits of Aprilaire's more advanced humidifiers including Automatic Digital Control which automatically adjusts humidity based on outside temperature.

The Aprilaire 500 Automatic Bypass Humidifier is easier than ever to install 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. This humidifier can be installed on the supply or return air ductwork. It is also left or right side reversible.

Automatic Digital Control Features

  • Shows that the humidifier is operating
  • Allows you to check relative humidity level
  • Tells you when it's time to change the water panel
  • Gives you service alerts


  • Includes the model 60 humidistat
  • 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
  • Includes automatic digital control, outdoor sensor, water pad, 110V to 24V transformer, and built-in bypass damper.
  • The Aprilaire 500 will cover up to 3000 sq ft.
  • This unit has a water feed rate of 3.0 GPH and will deliver an evaporative rate of .5 GPH

The Aprilaire 500 humidifier is designed to humidify slightly smaller areas up to 3,000 square feet. Aprilaire humidifiers are known for their long-lasting, high-quality performance and automatic functionality. The Aprilaire 500 whole house humidifier is one of the latest bypass humidifiers from this renowned company. If you are searching for a great house humidifier that is capable of maintaining the perfect humidity level, consider this economic choice from Aprilaire Humidifiers. Expect easy installation with your new Aprilaire 500 humidifier. Each product comes with simple instructions to get your house humidifier working in no time.

Type: Bypass
Evaporative Capacity: 12 gal/day
Humidistat: Automatic Digital
Dimensions: 15-3/8"(W) x 13"(H) x 10-1/4"(D)
Plenum Opening: 9-1/2”(W) x 9-1/2”(H)

Furnished Materials

  • 24 VAC Transformer
  • Model 60 Automatic Digital Humidifier Control (Humidistat)
  • Remote temperature sensor
  • Saddle valve
  • (1) Model 10 Water Panel
  • Humidifier installation template

Not Furnished Materials

  • Mounting screws (sheet metal screws)
  • Water supply line (1/4" copper)
  • Drain line (1/2" I.D. hose)
  • Low voltage wire (thermostat wire) for remote temperature sensor (length depends on sensor location)
  • Bypass ductwork
  • Model 50 Current Sensing Relay (if required)

Additional Information

Model Number500
Humidifier TypeBypass

You may also be interested in the following product(s)

Aprilaire 600 Automatic Bypass Humidifier (Digital Control)

Aprilaire 600 Automatic Bypass Humidifier (Digital Control)

Aprilaire 700 Automatic Powered Humidifier (Digital Control)

Aprilaire 700 Automatic Powered Humidifier (Digital Control)


Technical Specs

  • Dimensions: 15-3/8" (W) x 13" (H) x 10-1/4" (D)
  • Evaporative Capacity: 0.50 Gallons/Hour
  • Plenum Opening Size: 9-1/2” (W) x 9-1/2” (H)
  • Drain Connection (I.D.): .5"
  • Bypass Duct Diameter: 6"