Aprilaire 500 Small Bypass Humidifier - Auto Digital Control

Chronic low humidity in your home can undermine your indoor comfort and even cause costly damage to your home’s interior. Improve your comfort and protect your home during dry winter months (or year-round) when you use the Aprilaire Model 500 or 500M Whole House Humidifier.

This bypass humidifier works with your HVAC or furnace system to deliver comfortably humidified air throughout every room of your home. It functions like an evaporative humidifier, evenly distributing 12 gallons of moisture per day. That’s enough to humidify tightly sealed homes up to 3,000 square feet, average sealed homes up to 1,500 square feet, and loosely sealed homes up to 750 square feet. 

How It Operates

When connected to your HVAC system, the Aprilaire 500 and 500M Bypass Whole House Humidifiers moisturize your home's air using a natural evaporation process. When the humidifier controller triggers a need for more humidity, water flows from the connected water line into a distribution tray. The water flows over Aprilaire’s patented Water Panel evaporator where moisture from the distribution tray is evaporated into the incoming dry air. Humidified air is then distributed throughout your home via your HVAC system’s return duct and with the help of the blower.  

Ideal for Smaller Homes-Fewer Parts To Install

The Aprilaire Model 500 Whole House Humidifier is ideal for smaller homes, requires fewer installation parts, and needs only simple annual maintenance.

• Bypass Damper: The model incorporates a built-in bypass damper and right/left discharge change-over for easier installation and operation.
• Built-In Drain: It’s also equipped with a built-in drain to flush mineral build-up from the machine. Plus, no standing water inside the unit means humidified air always remains fresh and clean. Maintenance is a fast once-a-year process. 

Two Aprilaire 500 Models Available

• Model 500: Comes with a digital humidity controller that supports both automatic “set it and forget it” operation and manual humidity control.
• Model 500M: 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

Put an end to dry air discomfort and protect the investment you made in your home with one solution - the Aprilaire 500 or 500M Whole House Humidifier!

What Customers Love

• Set It and Forget It - Model 400 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 3,000 square feet, average-sealed homes up to 1,500 square feet, and loosely sealed homes up to 750 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.