Aprilaire 500 Humidifier Review

Editor rating

0/5 on 2016-05-20

User's rating

170 reviews


  • Fast acting
  • Automatically changes settings
  • Outdoor sensor
  • Covers 3,000 sq. ft.
  • Easy to maintain and clean




  • Installation isn't easy
  • Needs mounting to ducting
  • Requires HVAC installation



Wide coverage and fast acting, the features certainly out weigh the cons with this humidifier.

Winter is coming! Before this happens, we should prepare ourselves. We check our heater to see if it is functioning well. We take account of our furnaces to make sure it is good to go when the need to use it arises.

Then comes winter and we resort to heating things to warm up our bodies and our houses.  As a result, our skin dries out, and sometimes we have cases of skin itchiness because the air has turned dry. These are all classic effects of heating.

Heating the air inside your house can bring uncomfortable effects, as it changes the humidity level to somewhere high above the ideal rate. To avoid those effects, you better look into humidifiers that balance your house’s humidity. If you want entire house coverage all the time, then Aprilaire 500 Humidifier is perfect for you!


  • Auto digital control
  • Coverage: up to 3000 sq. ft.
  • Built-in bypass damper with evaporative rate of 0.5 gallons per hour
  • Outdoor sensor
  • Water pad with 3.0 gallons per hour water feed rate
  • Voltage: 110V to 24V transformer
  • Weight: 7.3 lbs
  • Dimensions: 16 in x 10 in x 13 in
  • Color: Grey
  • Needs no batteries with corded-electric power source


You’ll feel the immediate change in humidity with Aprilaire 500 Humidifier’s advanced technology within 24 hours. The humidifier’s blower activation feature allows you to check the humidity inside the house, even when your furnace is not working, as long as there is a source of hot water.

Therefore, you get the option to run the humidifier alone, or only with the furnace running too.

Its automatic feature helps you avoid the need to adjust your humidifier all the time – the product already does it for you based on the results of the humidistat, which is likewise easy to read and use. It also works well due to its accurate readings and accurate adjustments.

Aprilaire 500 Humidifier mainly controls the indoor humidity based on a temperature sensor placed outside – this feature prevents the build-up of moisture on your windows that will cause molds to form. It performs better when tapped to a hot water line, which results in a higher evaporation rate rather than cold water.  It also works well with high efficiency furnace.

This humidifier takes away the hassles of using portables in your house. It can cover your entire house and several rooms, up to 3000 square feet. You will save money from buying several portable humidifiers for each of your room just to feel comfortable in both cold and hot seasons.

Lastly, maintenance and cleaning of filters are relatively easy to do. You can skip the cumbersome task of refilling your humidifiers everyday, as Aprilaire 500 does it by itself after the system is. Also, Aprilaire 500 Humidifier is relatively affordable for its kind, especially when you put add its great performance to the mix.


Installing the product may take a little time and skill – at least half of a day. Wiring and installment instructions are not as comprehensive and understandable as could be expected.

You need to know the basics in electrical wiring and plumbing before starting the installation, so seeking the help of an HVAC  expert is recommended to make sure that the humidifier is properly installed and working.

Aprilaire 500 Humidifier cannot be mounted next to the thermostat on the all – you should mount it on the ducting instead. The humidistat control should be connected to the furnace and should be connected to a temperature probe outside the house.

That way, the humidifier can adjust the humidity indoors by knowing the temperature level outdoors.

Most important of all, if you install the product yourself, instead of using a HVAC expert, the warranty for this product is voided and not applicable – a downside for those who are handy and experienced with DIY installations.

In this respect, buyers need to spend some more dollars to pay the HVAC guy that will install the humidifier – which is a small price to pay to insure that your purchase will work smoothly.


When you want something that will keep your entire house humidified the entire season, you will want to get Aprilaire 500 Humidifier for your place. It will adjust your indoor humidity to the ideal and comfortable rate of 30% to 60% without you having to do it by yourself.

Its automatic feature makes your life easier, and more comfortable. You will get your money’s worth with this product!

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