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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. |
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| AprilAire 700 Whole-House Humidifier + Automatic Control | AprilAire 300 Self-Contained Whole-House Evaporative Humidifier | AprilAire 400 Whole-House Humidifier + Automatic Control | AprilAire 500 Whole-House Humidifier + Automatic Control | AprilAire 600 Whole-House Humidifier + Automatic Control | AprilAire 800 Whole-House Steam Humidifier | |
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| Customer Reviews |
1,099
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| Price | $367.77 | $592.19 | $299.99 | $203.99 | $246.39 | — |
| Water Capacity (Gallons Per Day) | 18 GPD | 13 GPD | 17 GPD | 12 GPD | 17 GPD | 11.5 GPD |
| Home Size Coverage | 5300 Sq. Ft. | 3900 Sq. Ft. | 5000 Sq. Ft. | 3600 Sq. Ft. | 5000 Sq. Ft. | 10,300 Sq. Ft. |
| Water Panel Model & Replacement Frequency Per Season | 35, Once | 35, Once | 45, Twice | 10, Once | 35, Once | 80 Steam Canister, Once |
| Fan Included | Yes | ― | ― | ― | ― | ― |
| Floor Drain Required | Yes | Yes | ― | Yes | Yes | Yes |
| Dimensions & Weight | 15.91" L x 11.35" W x 18.0" H, 17.0 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. | 15.63" L x 10.25" W x 13.0" H, 7.75 lbs. | 15.38" L x 10.25" W x 15.75" H, 10.0 lbs. | 10.13" L x 7.13" W x 20.88" H, 23.0 lbs. |
| Electrical Specifications | 120VAC, 1 phase, 60 Hz, 0.8 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 | 24VAC, 1 phase, 60 Hz, 0.5 Amps | 120VAC, 1 phase, 60 Hz, 11.5 Amps |
Videos
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Rotating Aprilaire Evaporative Humidifiers
Research Products Corporation
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How Dry is the Air in Your Home?
Research Products Corporation
Reviews with images
'Works OK, Not Too Hard to Install if You're Handy, Don't Waste Money on the Install Kit
The Model 700, with its built-in fan, is an important improvement over the cheaper versions that operate based on the pressure differential between the input and output plenums- the cheaper versions add humidity before the burner, which cooks most of it out during heating (which is when you need humidity the most).I attached a simplified wiring diagram that I found online which results in the humidifier operating only when the HVAC unit is heating, and it eliminates the need for the added transformer that comes with the installation kit.Other recommendations:1.) Make sure the mounting frame is perfectly level as installed (see picture).2.) Seal the mounting frame to the plenum with caulk, it's amazing how leaky the basic design is on a pressurized plenum (leaking A LOT of cooled or warmed air into the attic, in my case).3.) Install a water metering valve to fine tune how much water drains out the bottom of the unit, and is wasted. Amazon sells them, the copper line, the wire...4.) If you are installing on an HVAC unit, connect the drain to the drain overflow that at least puts the wasted water on the ground in your yard, as opposed to the putting that water down the drain.5.) Feeding hot water is much more effective for adding humidity than cold water. I connected mine to a circulation line that primes hot water to the furthest faucets when a pump is running.6.) If you buy the installation kit (a waste of money), don't try to use the plastic hose, unless you just want leaks. I ended up buying copper line and replacing the leaky plastic line that came with the installation kit.7.) Carefully tighten all the water fittings that are part of the humidifier... mine were loose (sloppy), and leaked in my attic.
Top reviews from the United States
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Reviewed in the United States on February 24, 2024
Style: Humidifier + Installation KitVerified Purchase
Amazing! No more filling a humidifier!
Reviewed in the United States on February 24, 2024
I had an HVAC friend help me install it. I would suggest that you do the same. Ease of installation was even easier with the friend advising! Installed in December and love the house maintaining around 40% humidity. No more shocks on light switches or on each outer or from our dog! Highly recommend!
Reviewed in the United States on February 24, 2024
Images in this review
Reviewed in the United States on March 6, 2021
I still love this humidifier it has never caused me issues that required replacement parts. The only maintenance i've done is changing pads every 6 months to a year and wipe down the inside with vinegar water to clean it up. Also twice the small orfice clogged causing water to slow or stop and humidity to drop. Easy fix with a small wrench and needle.
**
Original review:
First of all, this humidifier is a lifesaver. It works amazingly well. But I'm reviewing because I want to help buyers who have a Carrier thermostat and furnace. My Carrier Infinity Touch thermostat did not use all the standard wires that most thermostats use. The wiring instructions for this unit did not apply to my system at all unfortunately because my Carrier thermostat was wired up with just 4 wires: +power, -power, data+, and data-. At first I thought the install wouldn't be possible because of the wiring but then I realized that my furnace computer board had a "hum" pin on it. In my case, the output was 24v AC, which is exactly what the Aprilaire unit was expecting in order to trigger the relay to activate humidification. So What I did was plug the two loose wires from the humidifier directly to "Hum" and the "C" terminal on the furnace. WARNING: Not all furnace "hum" terminals are 24v AC, so you need to make sure your unit has the correct voltage on that pin before doing that. Because the wiring was this way, my thermostat had to directly control the humidifier, so i did not use the aprilaire humidistat that comes with it. The most trouble in the whole install that I faced was that initially, my Carrier Infinity Touch thermostat would not allow me to control the humidity. At first, all the humidity settings were greyed out so I couldn't click them. If this happens to you, you need to enable the humidifier "accessory" on the thermostat. This is how: Go to the main menu on your thermostat (dont try this on the phone app), then click and hold the "service" button until it turns green (about 10-15sec). Then you should see a hidden menu that the technicians are supposed to use. From there, go to "setup" then scroll and click "accessories". Then click "humidifier". Now you can tell the system that you have a humidifier plugged in. You can also set a reminder for 6 months or a year or whatever to change your humidifier filter. The other option "humidifier with fan" is a little bit vague but i have it enabled and it works how i want it to. If the humidity drops down, the furnace fan and the humidifier both turn on, even if the heater itself is not heating. This was my desired feature. Now you will be able to control all those settings for humidity that were greyed out before. I highly recommend enabling "window protection" if you live in a cold climate. Because this humidifier works really well and it will cause some condensation on your windows (especially upstairs) if you are not careful. Humid air rises! Check your windows and keep an eye on them because if they get moisture on them that means your attic can also get moisture and you really don't want that. I Hope this helps at least one person! Thank you Aprilaire!
P.S. I had no water flowing on my humidifier after the first install, but i realized there is a tiny yellow restrictor hole that got plugged with something so i stuck a fine needle in it and water works fine now. I Haven't had an issue with that since. The restrictor is just after the solenoid on my 700 model.
Style: HumidifierVerified Purchase
Please read for Carrier furnace and thermostat
Reviewed in the United States on March 6, 2021
** 2 year update:Reviewed in the United States on March 6, 2021
I still love this humidifier it has never caused me issues that required replacement parts. The only maintenance i've done is changing pads every 6 months to a year and wipe down the inside with vinegar water to clean it up. Also twice the small orfice clogged causing water to slow or stop and humidity to drop. Easy fix with a small wrench and needle.
**
Original review:
First of all, this humidifier is a lifesaver. It works amazingly well. But I'm reviewing because I want to help buyers who have a Carrier thermostat and furnace. My Carrier Infinity Touch thermostat did not use all the standard wires that most thermostats use. The wiring instructions for this unit did not apply to my system at all unfortunately because my Carrier thermostat was wired up with just 4 wires: +power, -power, data+, and data-. At first I thought the install wouldn't be possible because of the wiring but then I realized that my furnace computer board had a "hum" pin on it. In my case, the output was 24v AC, which is exactly what the Aprilaire unit was expecting in order to trigger the relay to activate humidification. So What I did was plug the two loose wires from the humidifier directly to "Hum" and the "C" terminal on the furnace. WARNING: Not all furnace "hum" terminals are 24v AC, so you need to make sure your unit has the correct voltage on that pin before doing that. Because the wiring was this way, my thermostat had to directly control the humidifier, so i did not use the aprilaire humidistat that comes with it. The most trouble in the whole install that I faced was that initially, my Carrier Infinity Touch thermostat would not allow me to control the humidity. At first, all the humidity settings were greyed out so I couldn't click them. If this happens to you, you need to enable the humidifier "accessory" on the thermostat. This is how: Go to the main menu on your thermostat (dont try this on the phone app), then click and hold the "service" button until it turns green (about 10-15sec). Then you should see a hidden menu that the technicians are supposed to use. From there, go to "setup" then scroll and click "accessories". Then click "humidifier". Now you can tell the system that you have a humidifier plugged in. You can also set a reminder for 6 months or a year or whatever to change your humidifier filter. The other option "humidifier with fan" is a little bit vague but i have it enabled and it works how i want it to. If the humidity drops down, the furnace fan and the humidifier both turn on, even if the heater itself is not heating. This was my desired feature. Now you will be able to control all those settings for humidity that were greyed out before. I highly recommend enabling "window protection" if you live in a cold climate. Because this humidifier works really well and it will cause some condensation on your windows (especially upstairs) if you are not careful. Humid air rises! Check your windows and keep an eye on them because if they get moisture on them that means your attic can also get moisture and you really don't want that. I Hope this helps at least one person! Thank you Aprilaire!
P.S. I had no water flowing on my humidifier after the first install, but i realized there is a tiny yellow restrictor hole that got plugged with something so i stuck a fine needle in it and water works fine now. I Haven't had an issue with that since. The restrictor is just after the solenoid on my 700 model.
Images in this review
Reviewed in the United States on March 4, 2024
-They tell you the preferred location for the humidistat is on the return duct, but only give you about 10 ft of 5-wire thermostat wire. There's NO way to run that neatly into the furnace cabinet/control board.
-They give you a 25 ft roll of 1/4 OD PEX, but the ferrules in the saddle valve and humidifier solenoid port are brass (no-no for plastic tubing). Had to buy my own ferrules.
-The humidifier comes with a saddle valve, but there's no way I'd risk breaking into my water heater's hot water output pipe with that thing....I ran PEX from my ManaBloc all the way to the humidifier, with a Sharkbite quarter-turn shutoff adapter.
The only thing that ended up being useful from the install kit was the drain line, which I could have gotten for far less than $75....Save yourself the money and get a nice PEX crimper/cutter kit for that, instead..
All told, the install wasn't too hard, and I ended up $600 into it after all was said and done - almost half of what the local HVAC companies were quoting for the job, and I've got a new set of tools/experience under my belt for the next job...
As far as operation - this is a great unit, and it had an immediate effect on the dry air in our home this week!
Style: Humidifier + Installation KitVerified Purchase
Great device, but skip the install kit (no value)
Reviewed in the United States on March 4, 2024
I ordered the Humidifier with install kit, thinking the extra $75 for a ready to install kit would be a good value for the money. Well - it isn't. Here's a couple reasons why:Reviewed in the United States on March 4, 2024
-They tell you the preferred location for the humidistat is on the return duct, but only give you about 10 ft of 5-wire thermostat wire. There's NO way to run that neatly into the furnace cabinet/control board.
-They give you a 25 ft roll of 1/4 OD PEX, but the ferrules in the saddle valve and humidifier solenoid port are brass (no-no for plastic tubing). Had to buy my own ferrules.
-The humidifier comes with a saddle valve, but there's no way I'd risk breaking into my water heater's hot water output pipe with that thing....I ran PEX from my ManaBloc all the way to the humidifier, with a Sharkbite quarter-turn shutoff adapter.
The only thing that ended up being useful from the install kit was the drain line, which I could have gotten for far less than $75....Save yourself the money and get a nice PEX crimper/cutter kit for that, instead..
All told, the install wasn't too hard, and I ended up $600 into it after all was said and done - almost half of what the local HVAC companies were quoting for the job, and I've got a new set of tools/experience under my belt for the next job...
As far as operation - this is a great unit, and it had an immediate effect on the dry air in our home this week!
Images in this review
Top reviews from other countries
Mhd
Needed for every house, not super easy to install depending on the amount of duct work
Reviewed in Canada on January 18, 2021Style: HumidifierVerified Purchase
Donald W. Calgary, AB
A humidifier that actually works.
Reviewed in Canada on March 14, 2019Style: HumidifierVerified Purchase
James
Great Power Humidifier - Make sure to get Wiring, tubbing and screws before starting
Reviewed in Canada on September 20, 2021Style: HumidifierVerified Purchase
Alexdude
Good humidifier, complex to install & expensive!
Reviewed in Canada on February 11, 2022Style: HumidifierVerified Purchase
