Aprilaire Model 800 Whole House Steam Humidifier

SKU: ap4886  |  Model: 800
4.7
Rated 4.7 out of 5 stars
83 Reviews
Regular price $1,097.99

Optional Fan Package:

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Manufacturer's Warranty

5-Year Limited Warranty

What's In The Box?

  • Aprilaire Model 800 Steam Humidifier w/ Steam Canister
  • Automatic Digital Humidity Controller
  • Fan Pack (Model 865 Only)
  • Dispersion Tube
  • Steam Hose (6 feet)
  • 7/8-inch I.D. Drain Tube (10 feet)
  • Hose Clamps
  • Saddle Valve
  • Mounting Screws
  • Owner's and Installation Manual

The Aprilaire Model 800 Steam Humidifier is a high-capacity, whole house humidifier with dual sensors to maintain optimal humidity in a variety of climates in large homes. This canister steam humidifier is ideal for whole house applications where evaporative humidifiers are less practical. Working independently of your HVAC system, this system delivers optimum levels of humidity throughout all the rooms of your home, distributing up to 34.6 gallons of humidity per day. That’s enough to cover as much as 6,200 square feet.

 

Model 800 vs. Model 865

This Model 800 steam humidifier is most ideal for:

  • Homes with ducted air systems, with or without forced air heat.
  • Homes in arid climates with special humidity requirements for wood floors, humidity-sensitive furnishings, large floor plans, or short furnace run times.

Consider the Aprilaire Model 865 Ductless Steam Humidifier Fan Package if you have a home with non-forced air heating systems.

  • The Fan Pack marries with the Aprilaire Steam Humidifier to provide comfortable humidity levels to homes without duct work.
  • Its quiet operation makes the Fan Pack practically unnoticeable and is designed to blend into a home's environment.
  • Easy to install, it can be recessed into a wall and connects directly to the steam humidifier.

How It Works

The system is installed to run independently of your HVAC system, delivering steam humidity to the rooms of your home using your existing ductwork. It generates steam by energizing 2 electrodes that extend into the canister’s water reservoir. The current flowing between these 2 electrodes causes the water to boil, creating steam.

Steam humidity then flows through a steam hose and is injected into the moving air stream through a distribution tube. Humidified air then travels evenly through your air ducts and into the rooms of your home. The Model 800’s total humidifying capacity depends on the electrical draw you’ve chosen. At 110 volts, the system delivers 11.5 gallons of moisture per day. At 208 volts, it releases 20.5 gallons of humidity per day. At 240 volts, the system delivers 23.3 gallons per day.

Additional Benefits and Features

  • Operates Automatically or Manually - Use the included automatic digital humidifier controller to control the unit automatically or manually.
  • Regular Drain Cycle - After operating for 168 hours, the system automatically drains the canister for freshness until the next trigger for operation.
  • Quiet and Easy To Maintain - The system performs quietly and requires only a periodic replacement of the canister for maintenance.
  • 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.

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

Summary

Enjoy healthy humidified air and less installation headaches when you use the Aprilaire Model 800 Steam Humidifier.

What Customers Love

  • Healthy Humidity - This system can help you maintain optimal humidity in your home of 40%  - 60%, which has been shown to reduce respiratory infections. 
  • Set It and Forget It - Model 800 allows you to set your desired humidity level on the humidity control. The humidifier automatically maintains that level, no intervention needed.

Things To Consider

  • Ideal Home Size - This unit is designed to humidify tightly sealed homes up to 6,200 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.

Customer Reviews

4.7
Rated 4.7 out of 5 stars
Based on 83 reviews
Total 5 star reviews: 70 Total 4 star reviews: 7 Total 3 star reviews: 4 Total 2 star reviews: 1 Total 1 star reviews: 1
93%would recommend this product
Reviews Summary
Customers say this steam humidifier effectively maintains desired humidity levels in their homes. Many reviews mention successful installation in large spaces up to 6000 square feet. Common feedback includes quick humidity adjustment within hours of setup. While some note operating costs and water consumption, most praise its reliable performance. Several mention improved comfort and consistent humidity control. Installation experiences vary, with some finding it straightforward and others requiring professional help. A few report noise issues and warranty concerns, though most indicate quiet operation.
83 reviews
  • A
    Andrew
    Flag of United States
    Verified Buyer
    Reviewing
    Aprilaire Model 800 Whole House Steam Humidifier
    I recommend this product
    Rated 5 out of 5 stars
    9 months ago
    Good service

    Came as described

  • M
    Michael
    Flag of United States
    Verified Buyer
    Reviewing
    Aprilaire Model 800 Whole House Steam Humidifier
    I recommend this product
    Rated 5 out of 5 stars
    10 months ago
    Aprilaire Model 800 Whole House Steam Humidifier

    Great unit. Easy to install. Does what it should!

  • T
    Tim
    Flag of United States
    Verified Buyer
    Reviewing
    Aprilaire Model 800 Whole House Steam Humidifier
    I recommend this product
    Rated 5 out of 5 stars
    2 years ago
    Great to do business with.

    Fast shipping and low price.

  • G
    George
    Flag of United States
    Verified Buyer
    Reviewing
    Aprilaire Model 800 Whole House Steam Humidifier
    I recommend this product
    Rated 5 out of 5 stars
    2 years ago
    I wish I had bought this unit years ago.

    We replaced a Honeywell whole house humidifier. It was junk ... the air handler wouldn't stop running and the humidity level couldn't reach 40%. It overworked the system and used a ton of water as the old unit was on a drip system. Although our new unit was just installed yesterday, I'm amazed at how well it works and the air handler isn't always on. In addition, I'm looking to save on my electric and water bill too.