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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
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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 |
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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
- Best Sellers Rank: #137,654 in Home & Kitchen (See Top 100 in Home & Kitchen)
- #216 in Humidifiers
- Customer Reviews:
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
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 WellnessReduce airborne illnesses that can cause respiratory infections, asthma attacks, and allergic reactions by maintaining proper relative humidity in your home.*
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Lower Energy CostsHumidifiers can affect the "real feel" temperature in your home, which can prevent your furnace from working overtime. |
Home PreservationAir 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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Humidity for ComfortWhether 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. |
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 | |
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Customer Reviews |
4.5 out of 5 stars
1,739
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3.7 out of 5 stars
5
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4.3 out of 5 stars
308
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4.6 out of 5 stars
775
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4.6 out of 5 stars
1,094
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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
Videos
Videos for this product
0:22
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Customer Review: Changed the way I feel in the winter!
Christopher
Videos for this product
1:10
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Customer Review: Good to have for Winter, Instl is hard
Amazonia Vincent
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers 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
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
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
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
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
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
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
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
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
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Top reviews from the United States
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Phase one I spent about 4 hours mounting the humidifier and bypass ductwork. I purchased 6" duct from my local home improvement store. I used a 3/8" drill bit to drill to start an initial hole then used quality tin cutters to cut the square humidifier opening into my plenum and a 6" round hole for my bypass duct into my cold air return. I already have a set of left, center and right tin cutters, I switched between left/right cutters when appropriate to make clean cuts. I used 3/4" sheet metal screws with hex heads for everything. I added true metal tape around seams. Metal foil tape is for taping duct work, which is not the same as "ducttape" which is the more common tape everyone thinks of.
Phase 2 I spent about an hour (which hopefully most folks will not have to do) adding a 2 gang metal box at the ceiling above the furnace to mount the 24V transformer (included with the apriaire). I added this to the circuit that powers the furnace. The instrufions tell you not to wire the transformer within the furnace 24v circuits, but it is completely ok and acceptable to wire the 110V transformer to the actual "home" 110V circuit to the furnace. I added a switch in my box so in the summer months I can turn off the transformer when I have the humidifier off. If you are not comfortable with home electrical wiring and you do not have a place to mount your 24V transformer to a 110V source, then plan on either hiring an HVAC or Electrician to add a similar box for your situation.
Phase 3 I spent about an hour running a 1/4" water line from a hot water source to the Humidifier. The only thing I needed to purchase was 10' of 1/4" copper pipe. I used a couple pieces of pipe strap to hold the piping in place for my situation. A flare wrench is necessary to tighten these fittings correctly.
Phase 4 I spent about 3 hours running thermostat wires as instructed in the kit. I used a stepping drill bit to drill the 3/4" hole needed for the humidistat then mounted the humidistat with two sheet metal screws, as others mentioned you need to use at least 3/4" long sheet metal screws for this mounting. I used one run of 18-5 thermostat wire to go between the humidistat and the furnace. I also got a really long run of 18-2 thermostat and door bell wire, most of it was for the outside sensor, some was used to connect the transformer, hunidifier water line solenoid and humidistat together.
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. 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 level that is no too excessive. If you over humidify your home, you will get water condensation on the windows which you do not want. The humidistat is simple to use and the bright blue display is easy to read. It would be great if it also reported the outside temperature, but it's only job is to report the relative humidity, which it does.
I was told as a tip to use electrical twist caps at the humidifier water line solenoid and at the outside temperature sensor. These are serviceable parts, by using twist wire caps as apposed to butt connectors or soldering it will made it easier to replace these parts if they were ever to fail.
Update:
I only use the humidifier from about late December through Early March. I was warned last year that if the humidifier is always working you can over humidify the home which encourages mold growth in the duct work.
The home feels warmer inside with the humidifier, even though the thermostat set at the same temperature.
As for the humidifier setting itself, I have it set at 2 for our home. I did initially have it set to 4 which created way too much humidity in our home.
My only complaint is that the relative humidity sensor is on the back of the display unit. I wanted to have the sensor mounted on the HVAC duct and then the display upstairs next to my thermostat. It turns out to be OK as it's the auto version and the blue LED stays on all of the time and it's bright. It just would be nice to see if it needs to be adjusted if something is out of whack. I would have liked to see a humidity percentage on the dial instead of just a number but I'm sure that's because of the variability of the humidity to get the proper balance of outside and inside with the outdoor sensor. The item is light and well packed and very basic so no complaints there.
I have a 1,500 sq/ft house and it does a fine job so that I don't shock the hell out of my cats and the lining of my nose feels non-dry again. The house is not air tight and some of the tall windows next to the sliders are popped so it is good that it still works well on setting 6. The level was around 30% when it was crazy cold out this year in Ohio. Anyway, I hope this helps a little...
Top reviews from other countries
This is a great humidifier but it is a lot harder to installed if DIY than the Honeywells you get at the local hardware store. It took me quite some time to figure everything out and get all the components. It doesn't come with wire so you will need to get wire to wire into the furnace, wire to wire all the low voltage connection, also a drain hose, 1/4 copper pipe, and an electrical box that can fit the transformer. The instructions are good but not that good, videos in YouTube are all different depending on who's installing it and what HVAC setup they have, but if you follow the directions you will be ok.
The hardest part was figuring out where to installs the transformer. I ended up placing it in the electrical box that held the power switch to my furnace. The box didn't have any holes (knockout holes) to which I could thread the transformer into so I had to replace the whole switch box. The white wire of the transformer gets attached to the white cable in the box, the black wire of the transformer gets attached to the switch.
You will also need to drill a hole into the wall to be able to install the outside temperature sensor.
I did not use the saddle valve. So I bought a separate valve, 1/2 1/2, 1/4, some pex tubing, and rented a pex crimper to tap into the main hot water line. I had some 1/4 copper tubing for the connection between the valve and the humidifier. It just attaches with compression fittings.