4.8
Rated 4.8 out of 5 stars
56 Reviews

Aprilaire Model 600 Large Whole House Bypass Humidifiers

SKU: ap4883  |  Model: 600M
$239.99

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Manufacturer's Warranty

5-Year Limited Warranty

What's In The Box?

  • Aprilaire Model 600 or 600M Humidifier with Built-In Bypass Damper
  • Water Panel
  • 24 VAC Transformer
  • Digital (600) or Manual Humidifier Control (600M)
  • Humidifier Control Installation Instructions
  • Self-Piercing Saddle Valve
  • Water Solenoid Valve #4040 (600)
  • Humidifier Installation Instructions
  • Owner's Manual

Description

Dry indoor air in the wintertime can wreak havoc on your comfort and even cause damage to your home’s interior. Maintaining a proper humidity level by using a whole house humidifier like the Aprilaire 600/600M is the ideal solution. It's an in-duct bypass humidifier that works with your existing heating and cooling system to provide comfortably humidified air throughout every inch of your home. Functioning as an evaporative humidifier, these models evenly distribute up to 17 gallons of moisture per day. This is enough to humidify tightly sealed homes up to 4,000 square feet, average sealed homes up to 2,000 square feet, and loosely sealed homes up to 1,500 square feet. 

 

How It Operates

Once connected to your HVAC system, the Aprilaire 600 and 600M Bypass Whole House Humidifiers humidify your home using a natural evaporation process.

  • More Humidity Needed: When the humidifier controller triggers a need for more humidity, water automatically flows from the connected water line into a distribution tray located at the top of the humidifier.
  • Moisture Creation: Water is distributed evenly across the width of this tray and directed to flow over Aprilaire’s patented Water Panel evaporator into the heart of the humidifier. Moisture from the distribution tray is then evaporated into the incoming dry air, creating comfortably humidified air.
  • Distribution: Humidified air is then distributed throughout your home through your HVAC system’s return duct and with the help of the blower.  

Ideal for Larger Homes, Delivers 50% More Moisture Than The Competition

The Aprilaire Model 600 Whole House Humidifier is a great choice for larger homes that require a large humidifying capacity. The model incorporates a built-in bypass damper and right/left discharge change-over for easier installation and operation, and is equipped with a built-in drain to flush mineral build-up. As a result, water does not accumulate inside the unit, so humidified air is always fresh and clean.

These features and others are among the main reasons why the Aprilaire 600 is one of the best performing bypass humidifier on the market. You can count on it to deliver roughly 50% more moisture than the competition. 

Two Aprilaire 600 Models Available

  • Model 600: Comes with a digital humidity controller that supports both automatic “set it and forget it” operation and manual humidity control.
  • Model 600M: Comes with a manual humidity controller that supports manual humidity control only. Thorough instructions and guidance for setting and adjusting an ideal humidity level using the controllers are included with each model.

Additional Benefits and Features

  • Water Panel Change Indicator - For proper humidifying throughout the season, you should replace the Water Panel twice per year. Each model includes a helpful indicator that reminds you when it’s time for a replacement.
  • Protects Your Interior - Optimally humidified air helps protect your wood floors, furnishings, and your home’s infrastructure from damage due to low humidity.
  • Relieves Dry Air Symptoms - Properly humidified air also reduces respiratory irritation triggered by low humidity and helps alleviate itchy dry skin. 
  • May Reduce Energy Costs - Maintaining healthy humidified air during the colder months can actually help you feel warmer, leading to reduced heating costs. 
  • Professional Installation Recommended - Aprilaire highly recommends having a qualified HVAC professional install these units. 

Product Warranty Note: Professional installation is required. The Aprilaire parts warranty will be void if not installed by a licensed contractor. 

Summary

Stop dry wintry air from undermining your comfort level and protect your loved interior with a single reliable solution - the Aprilaire 600 or 600M Whole House Humidifier!

What Customers Love

  • Set It and Forget It - Model 600 allows you to set your desired humidity level on the humidity control. The humidifier automatically maintains that level, no intervention needed.
  • Reduces Heating Costs - Healthy humidified air can help you feel warmer during the winter months and may help reduce your overall heating costs.

Things To Consider

  • Ideal Home Size - These models are designed to humidify tightly sealed homes up to 4,000 square feet, average-sealed homes up to 2.000 square feet, and loosely sealed homes up to 1,500 square feet. 
  • Professional Installation Needed - Aprilaire whole house humidifiers should be installed by a qualified HVAC technician to ensure proper installation, operation, and regular maintenance.

Specifications

    Key Specifications

    • HVAC Type
      Bypass
    • Moisture Output Per Day (gallons)
      17.0
    • Type
      Evaporative

    General

    • Color
      Gray
    • Controls
      Manual: Manual
      Electronic: Electronic
    • Fill Type
      Direct Water Line
    • Humidifier Style
      HVAC/Duct
    • Humidity Range
      10% - 45%
    • Recommended Coverage Area (sq. ft.)
      2000
    • Recommended For
      Whole House

    Power

    • Voltage (V)
      110-120

    Dimensions

    • Depth (in.)
      10.25
    • Depth (with front cover) (in.)
      10.25
    • Height (in.)
      15.75
    • Height (with front cover) (in.)
      15.75
    • Weight (lbs.)
      9.8
    • Width (in.)
      15.375
    • Width (with front cover) (in.)
      15.375

    Additional Features

    • Additional Features
      Manual: Humidistat
      Electronic: Humidistat, Humidity Display, Wick Filter

    Warranty

    • Manufacturer's Warranty
      5-Year Limited Warranty

Customer Reviews

4.8
Rated 4.8 out of 5 stars
Based on 56 reviews
Total 5 star reviews: 48 Total 4 star reviews: 7 Total 3 star reviews: 0 Total 2 star reviews: 1 Total 1 star reviews: 0
98%would recommend this product
Reviews Summary
Customers say this whole-house humidifier effectively maintains consistent humidity levels in homes up to 4000 square feet. Many reviews mention straightforward installation, though some note additional parts may be needed. The automatic control feature receives praise for adjusting levels based on outdoor temperatures. Common feedback includes maintaining 30-40% humidity levels throughout homes. While most find it operates quietly and reliably, a few users report issues with humidity settings not matching their measurements.
56 reviews
  • K
    Kevin
    Flag of United States
    Verified Buyer
    Reviewing
    Aprilaire Model 600 Large Whole House Bypass Humidifiers
    I recommend this product
    Rated 5 out of 5 stars
    7 years ago
    I highly recommend this product

    Product was delivered fast and on time, and at a competitive cost. Product works much better than a similar product purchased at a big box store. I highly recommend this product from Sylvane!

  • HD
    Homeowner D.
    Flag of United States
    Verified Buyer
    Reviewing
    Aprilaire Model 600 Large Whole House Bypass Humidifiers
    I recommend this product
    Rated 5 out of 5 stars
    8 years ago
    I can't believe I waited this long

    I always thought that the comfort that humidifiers provide was a myth. I was wrong; what a difference. Install was easy. Directions were thorough, wiring and plumbing was a breeze. Highly recommended along with ever other 5 star review here.

  • S
    Samantha
    Flag of United States
    Verified Buyer
    Reviewing
    Aprilaire Model 600 Large Whole House Bypass Humidifiers
    I recommend this product
    Rated 5 out of 5 stars
    6 years ago
    Great deal and good seller

    Very fast delivery. Product came as advertised in good packaging. Lowest price online for this unit from a reputable company. I received follow up emails right away to make sure I was happy with the purchase. All manuals and instructions were available online prior to purchase to ensure correct ordering. Would definitely recommend purchasing from Sylvane.

    Sylvane

    Thank you for your review. We appreciate your feedback!

  • A
    Avery
    Flag of United States
    Verified Buyer
    Reviewing
    Aprilaire Model 600 Large Whole House Bypass Humidifiers
    I recommend this product
    Rated 5 out of 5 stars
    6 years ago
    Perfect, wish we would have done this sooner!

    This is exactly what we were looking for. We experienced dry conditions that would make your skin dry, sinuses hurt and everything have that static feel. We have tons of hardwood floors in our home and decorative wood trim throughout. Every winter you would see this shrink and cracks open, and then swell back in the summer. The install was pretty easy with the right tools and was up and running right away. It manages the humidity based on the outdoor temp and kicks on the blower to add humidity when necessary. It's perfect, and I only wish we would have done it sooner.

  • L
    Larry
    Flag of United States
    Verified Buyer
    Reviewing
    Aprilaire Model 600 Large Whole House Bypass Humidifiers
    I recommend this product
    Rated 5 out of 5 stars
    6 years ago
    Reverse feature adds flexibility to installation.

    Simple to install with basic hand tools. I changed my mind about were to install after I received the unit. Reversibility feature made the change easy. Glad I got the automatic control. Set and forget.