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AprilAire 500 Whole-House Humidifier, Automatic Compact Furnace Humidifier, Large Capacity Whole-House Humidifier for Homes up to 3,600 Sq. Ft., White

4.5 4.5 out of 5 stars 1,739 ratings

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Humidifier

Purchase options and add-ons

Brand Aprilaire
Special Feature Adjustable Humidity Control, Digital Display, Quiet, Auto Shut Off, Service Filter Indicator, Humidistat See more
Color Gray
Filter Type Evaporative
Floor Area 3600 Square Feet
Capacity
12 Gallons
Runtime
1 hour
Material
Plastic
Power Source
ac

About this item

  • BUY WITH CONFIDENCE This humidifier was designed and manufactured in the USA by AprilAire – the inventor of the whole home evaporative humidifier, and the leader in indoor air quality solutions
  • FULL COVERAGE up to 3,600 square feet in tightly built homes with a capacity of 12 gallons per day
  • AUTOMATIC HUMIDIFIER with dual sensors to monitor and respond to both outdoor temperature and indoor relative humidity to deliver optimum humidity 24/7 throughout the home – simply set it and forget it
  • CONVENIENT DIGITAL CONTROL shows percent humidity, lights indicate humidifier is running, when to change the Water Panel, when service is needed, and Blower Activation switch sets humidifier to run continually, or only when the furnace runs
  • HUMIDITY FOR HEALTH AprilAire Humidifiers can help you maintain optimal humidity in your home of 40% – 60% which has been shown to reduce the incidence of respiratory infections and symptoms related to allergies and asthma by minimizing the formation of bacteria and viruses, fungi, and dust mites. In addition, you’ll feel more comfortable while also preserving items in your home susceptible to damage from changing humidity or dry conditions

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Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 15.63 x 10.25 x 13 inches; 7.35 Pounds
  • Item model number ‏ : ‎ 500Z
  • Date First Available ‏ : ‎ February 24, 2010
  • Manufacturer ‏ : ‎ Research Products Corporation
  • ASIN ‏ : ‎ B0039PR5RE
  • Country of Origin ‏ : ‎ USA
  • Customer Reviews:
    4.5 4.5 out of 5 stars 1,739 ratings

Product Description

AprilAire introduced the first evaporative humidifier for forced air furnace systems back in 1954. Since that time, AprilAire continues to lead the industry in whole home humidification systems. Our evaporative humidifiers work by piping water into the distribution tray located at the top of the humidifier. The water is uniformly distributed across the width of the tray and through a scientifically designed system of outlets. It flows by gravity over the Water Panel evaporator. Dry, hot air from the HVAC system is moved through the moisture-laden Water Panel evaporator. Natural evaporation takes place, the water is turned to vapor, and the humidified air is circulated throughout your home. INCLUDED IN THE BOX: Installation instructions and template, humidifier with built-in bypass damper, 24 VAC transformer, automatic digital humidifier control with sensor, outdoor temperature sensor, saddle valve, solenoid valve, and Model # 10 Water Panel


From the manufacturer

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Balance your home's humidity

AprilAire Whole-House Humidifiers balance your home's humidity to help improve sleep and dry skin, enhance productivity, and keep you protected against airborne viruses. Additionally, AprilAire Humidifiers help preserve your home and any contents susceptible to cracking and warping due to low humidity levels.

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Maintain Wellness

Reduce airborne illnesses that can cause respiratory infections, asthma attacks, and allergic reactions by maintaining proper relative humidity in your home.*


*E.M. Sterling, “Criteria for Human Exposure to Humidity in Occupied Building,” ASHRAE Winter Meeting, 1985


Lower Energy Costs

Humidifiers can affect the "real feel" temperature in your home, which can prevent your furnace from working overtime.

Home Preservation

Air that’s too dry can cause wood to splinter. Protect the structural integrity of your home and wooden furnishings like floors and cabinets with solutions intuitively designed to create healthy environments.

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Compatible AprilAire Water Panel Humidifier Filter

Humidity for Comfort

Whether your home is in a dry region of the country, or in an area with seasonal dryness, maintaining proper humidity levels can make all the difference in how comfortable you feel in your home.

Humidity Control at the Ready

All our humidifiers ship with either an Automatic or Manual Humidifier Control (also known as a Humidistat). With an AprilAire Whole-Home Humidifier, you will also avoid common problems associated with less moisture in the air such as dry throat and static shock.

AprilAire Genuine Water Panels

Designed to keep your AprilAire humidifier operating at peak performance, AprilAire Water Panels should be changed per the recommended schedule for your Model, typically once or twice per heating season. All AprilAire Whole-Home Humidifiers ship with the Water Panel(s) needed for one season. Additional/Replacement Water Panels sold separately.

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AprilAire 500 Whole-House Humidifier + Automatic Control AprilAire 300 Self-Contained Whole-House Evaporative Humidifier AprilAire 400 Whole-House Humidifier + Automatic Control AprilAire 600 Whole-House Humidifier + Automatic Control AprilAire 700 Whole-House Humidifier + Automatic Control AprilAire 800 Whole-House Steam Humidifier
Customer Reviews
4.5 out of 5 stars
1,739
3.7 out of 5 stars
5
4.3 out of 5 stars
308
4.6 out of 5 stars
775
4.6 out of 5 stars
1,094
Water Capacity (Gallons Per Day) 12 GPD 13 GPD 17 GPD 17 GPD 18 GPD 11.5 GPD
Home Size Coverage 3600 Sq. Ft. 3900 Sq. Ft. 5000 Sq. Ft. 5000 Sq. Ft. 5300 Sq. Ft. 10,300 Sq. Ft.
Water Panel Model & Replacement Frequency Per Season 10, Once 35, Once 45, Twice 35, Once 35, Once 80 Steam Canister, Once
Fan Included Yes
Floor Drain Required Yes Yes Yes Yes Yes
Dimensions & Weight 15.63" L x 10.25" W x 13.0" H, 7.75 lbs. 14.38" L x 22.07" W x 12.43" H, 29.2 lbs. 15.38" L x 10.25" W x 15.75" H, 10.0 lbs. 15.38" L x 10.25" W x 15.75" H, 10.0 lbs. 15.91" L x 11.35" W x 18.0" H, 17.0 lbs. 10.13" L x 7.13" W x 20.88" H, 23.0 lbs.
Electrical Specifications 24VAC, 1 phase, 60 Hz, 0.5 Amps 120VAC, 1 phase, 60 Hz, 0.7 Amps 24VAC, 1 phase, 60 Hz, 0.5 Amps 24VAC, 1 phase, 60 Hz, 0.5 Amps 120VAC, 1 phase, 60 Hz, 0.8 Amps 120VAC, 1 phase, 60 Hz, 11.5 Amps

What's in the box

  • 24VAC Transformer, Humidifier Control, Valves, Installation Instructions
  • Product guides and documents

    Looking for specific info?

    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    1,739 global ratings

    Customers say

    Customers like the performance and value of the humidifier. For example, they mention it works well, it's well worth the money, and the outdoor temperature sensor is worth the extra cost. That said, some complain about the humidity level and ease of installation.

    AI-generated from the text of customer reviews

    226 customers mention195 positive31 negative

    Customers like the performance of the humidifier. They mention that it works well, functions well, and raises the humidity level in their home. Some say that the test mode worked fine, but the unit would never run regardless of temperature. The humidity readout is great and makes adjusting the unit's performance easy. Overall, most are satisfied with the performance and functionality of the product.

    "...The system works well. I like the options to be able to let it run on its own or only when the furnace is running...." Read more

    "It has worked flawlessly this winter. As others have stated I wouldn't take on this as a DIY unless you have electrical and fix-it experience...." Read more

    "...It ran pretty much non-stop. It did add about 12-15 %RH in the first hour or so but it would drop just as fast...." Read more

    "This humidifier works like a charm. It auto adjusts to the outside temperature so I don't have to do anything...." Read more

    95 customers mention90 positive5 negative

    Customers are satisfied with the value of the humidifier. They mention that it is well worth the money, the outdoor probe is definitely worth the extra cost, and that the unit is decent. Some say that the 500A model is nice and small, making it easy to tuck away.

    "...The install is fairly simple and the price is right. I purchased this on amazon for $140 and spent just under $100 in extra materials to complete...." Read more

    "...Well worth the money." Read more

    "...Impressive system, great instructions, and a great price...." Read more

    "...Have an HVAC person do it. It's worth the money." Read more

    21 customers mention17 positive4 negative

    Customers like the outdoor temperature sensor on the humidifier. They say it's a great feature that adjusts to the outside conditions. Some say the sensor is good to have for winters, making them more bearable.

    "...I also like the outside temperature feature, basically you set this humidistat to where you want it and forget it and it will keep the humidity at a..." Read more

    "...It also has an outdoor sensor so it regulates the maximum humidity based on outdoor temperature so you don't get too humid and have condensation..." Read more

    "This humidifier works like a charm. It auto adjusts to the outside temperature so I don't have to do anything...." Read more

    "...This model does come with the temp sensor that just senses when the temp reaches 55 deg and shuts itself off...." Read more

    18 customers mention18 positive0 negative

    Customers are satisfied with the appearance of the humidifier. They mention that it looks and works great, they are impressed with the simplicity of the design, and with the sophistication of the automatic control. They also say that it has a cool digital display and an outdoor thermostat. Customers also say it's easy to assemble and install, and that the diagram is a good schematic.

    "...I flipped the my 500 around to that it was right-facing. What a great design, Everything from the logo to the drain plug is 100% reversible." Read more

    "Easy to assemble and install. Design is very efficient. We had it professionally installed and it was almost a 10...." Read more

    "...These instructions help explain the wiring. The diagram is a good schematic as well. I spent a probably a total of 8 hours on this project...." Read more

    "...If I knew how well the new one works and how good it looks - I wish I did it a long time ago. House is 1700 square feet bungalow...." Read more

    16 customers mention16 positive0 negative

    Customers are satisfied with the comfort provided by the humidifier. They mention that it keeps their homes comfortable in the winter, with no drastic changes in their home comfort. They also mention that their hands and throat feel much better, and that it's a fun and healthy upgrade to their HVAC system.

    "...videos and relooked at the instruction and found that it was very painless and easy to wire...." Read more

    "...Pros:- Notice a huge difference in the comfort of my home in less than 24 hours.- No Bloody nose in the morning.-..." Read more

    "...No cracking so far, and the house is more comfortable than it was last winter...." Read more

    "...This is a fun and great healthy and comfortable upgrade to your HVAC system. My thermostat used a blue wire instead of green...." Read more

    235 customers mention148 positive87 negative

    Customers are mixed about the ease of installation. Some mention that the instructions are easy to understand and go smooth. They also say the diagram is a good schematic. However, others say that it's not as easy to install yourself as you would think, and the time required is time consuming.

    "...The item is light and well packed and very basic so no complaints there...." Read more

    "...similar work for a living The install of the unit itself is pretty straight forward, the instructions are pretty decent for mounting and running the..." Read more

    "...This is a time consuming project, but if you are comfortable with other home improvements such as adding outlets, lights, switches, fixing pluming,..." Read more

    "...Installation was very start forward until I got to the wiring, which is the "most difficult" part of the instalation... it wasn't to hard to do, I..." Read more

    54 customers mention35 positive19 negative

    Customers have mixed opinions about the quality of the humidifier. Some mention that it's a quality made humidifier at a decent price, while others say that it was poorly made and had defective parts.

    "...The unit seems to run efficiently and keeps the house comfortable...." Read more

    "...I've been using Aprilaire for a long time, and this model has a solid reputation and quality build...." Read more

    "...It doesn't show how high it goes into the duct because of a poor image shown...." Read more

    "...If you’re a DY selfer. This is a fun and great healthy and comfortable upgrade to your HVAC system. My thermostat used a blue wire instead of green...." Read more

    23 customers mention0 positive23 negative

    Customers are dissatisfied with the humidity of the product. They mention that it does not put out enough humidity to keep the RH above 20%, and the automatic feature puts too much moisture in the house. It took awhile to get humidity adjusted properly, and there is some condensation on the windows if you choose to set the humidity higher.

    "...My only complaint is that the relative humidity sensor is on the back of the display unit...." Read more

    "...Update: After one day, the control panel no longer activates the humidifier. If I turn it to “Test” setting, it does." Read more

    "...stopped, the whole house became extremely humid but the humidistat was showing only 36. A honeywell humidimeter was showing 45+...." Read more

    "...level (they don't recommend this setting), and still, can only get a 22% humidity level...." Read more

    Works great!  Silent as well.
    5 Stars
    Works great! Silent as well.
    I opted for this in my new home VS the powered fan one I am used to. This one works by using the positive and negative pressures of your forced air system so it is less noisy. Love it so far!
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    Top reviews from the United States

    Reviewed in the United States on December 7, 2014
    Style: HumidifierVerified Purchase
    42 people found this helpful
    Report
    Reviewed in the United States on May 7, 2014
    Style: HumidifierVerified Purchase
    10 people found this helpful
    Report

    Top reviews from other countries

    ecmelara
    5.0 out of 5 stars Great humidifier
    Reviewed in Canada on February 3, 2022
    Style: HumidifierVerified Purchase
    16 people found this helpful
    Report
    usa
    5.0 out of 5 stars Awesome
    Reviewed in Canada on February 25, 2024
    Style: HumidifierVerified Purchase
    Frost
    4.0 out of 5 stars Way too complex
    Reviewed in Canada on August 30, 2023
    Style: HumidifierVerified Purchase
    4 people found this helpful
    Report
    John D
    3.0 out of 5 stars Excellent Humidifier - But did not come with Outdoor Temperature Sensor
    Reviewed in Canada on February 7, 2024
    Style: HumidifierVerified Purchase
    D R Hannon
    5.0 out of 5 stars Humidity
    Reviewed in Canada on December 28, 2023
    Style: HumidifierVerified Purchase