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Aprilaire

AprilAire 865 Whole-House Steam Humidifier, Manual Steam Humidifier with Wall Mount Fan, Whole-House Humidifier for Homes without HVAC Duct System up to 10,300 Sq. Ft., White

  • Based on 33 reviews
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Arrives Wednesday, Jul 2
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Features

  • BUY WITH CONFIDENCE This high output steam humidifier was designed with electrode technology and manufactured in the U. S. A. by Aprilaire the inventor of the whole home evaporative humidifier, and the leader in indoor air quality solutions
  • FULL COVERAGE up to 10,300 square feet in tightly built homes. Choose from 6 levels of output adding 11. 5 to 34. 6 gallons of moisture into the air per day based on voltage and installation
  • MANUAL HUMIDIFIER with a single sensor built into the standard control monitors indoor relative humidity for use in manually setting the percent humidity in your home
  • WALL MOUNT FAN pushes humidified air into living space for homes without a HVAC duct system
  • 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, youll feel more comfortable while also preserving items in your home susceptible to damage from changing humidity or dry conditions

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 – including steam humidifiers. AprilAire steam humidifiers use electrode technology and are simple to install, operate, and maintain. With electrode technology, electrical current flows between submerged electrodes, resistance of the water to the electric current heats the water. The submerged electrodes are found in a replaceable canister. At the end of a humidifier season, the canister – including the electrodes, is replaced. No cleaning, no scrubbing, simply replace the canister and you’re ready for the next humidifier season. Electrode technology requires impurities in the water to promote the transfer of electricity. For this reason, water filtration is not required with electrode technology, minimizing the complexity of the installation and on-going operating costs. This unit will operate with water hardness between 3 and 36 grains – a very wide range. If reverse osmosis or deionized water is present, plumb the steam humidifier to a water line before the water flows through the reverse osmosis or deionization equipment. INCLUDED IN THE BOX: Installation instructions, steam humidifier, Model 65 manual digital humidifier control with sensor, wall mount fan pack, steam hose (6 feet), 7/8 inch drain tubing (10 feet), hose clamps, saddle valve, mounting hardware, Model 4028 drain tee and trap assembly, Model 80 steam canister

Brand: Aprilaire


Special Feature: Adjustable Humidity Control, Digital Display, Auto Shut Off, Service Filter Indicator, Humidistat


Color: Gray


Filter Type: Steam Canister


Floor Area: 6.2E+3 Square Feet


Product Dimensions ‏ : ‎ 7.13 x 10.13 x 20.88 inches; 30 Pounds


Item model number ‏ : ‎ 865


Date First Available ‏ : ‎ December 16, 2014


Manufacturer ‏ : ‎ Research Products Corporation


Country of Origin ‏ : ‎ USA


Best Sellers Rank: #1,445,848 in Home & Kitchen (See Top 100 in Home & Kitchen) #1,173 in Humidifiers


#1,173 in Humidifiers:


Customer Reviews: 4.2 4.2 out of 5 stars 33 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jul 2

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Solid build and works great. Depending on location this could be complex to install.
Review Image by Alex Alex
Review Image by Alex Alex
Unit Review: This humidifier came from the old world: no digital options or internet integrations, no plasticky parts/pieces prone to break (except water tank which is plastic but , i think, thats on purpose), no shiny lights and useless options and complex and overly design menu - no menus at all. Some connectors - like input power cable are awkwardly placed in motherboard and having to manually switch betwen 120/240v and 11/17Amp reduce flexibility but maybe this is made to install , tune and forget, then who cares? For security, I would like to have an dedicated dry switch port on motherboard to connect a water sensor/alarm sensor to shut down unit completely and there is one label "alarm" but according to aprilaire is not enabled yet. Also units gets warm and a temperature sensor could help on monitoring and prevent emergency situations (to prevent meltdowns for example - security first in my book) A water condutivity sensor will be a great add on: being in a place with very hard/ very soft water could impact unit greatly and you may have to add salts to water or add a filter to reduce calcium. (this is mentioned on manual) A more hand on installation video should be published by manufacturer: found a few but they don't cover full installacion and they skip over "what is not in the manual". Maybe contractors knows those tricks but you have to pay to get them. Review of my installation process: My installation came with several complexities: 1. Need to run a separate electrical cable from the main electrical box and across several walls: I used 10/3 wire, which is more than necessary, but it does the job and ensures protection. This is important because the device will run at a minimum of 11 amps. 2. Best position for the unit was in the crawling space based on fan pack location: The crawling space was over 6 feet from the fan pack, so I had to use a copper 1-inch pipe, isolated with 1-inch insulation material and properly soldered according to manufacturer specifications. 3. Wall scanning was inaccurate: The wall scanner didn’t work well, so I had to adjust the fan pack’s location on the fly. Old house sometimes do have thicker inside walls. 4. Personal projects: I had other personal projects requiring my attention and since I was doing this all myself, process took longer. 5. No floor drain available near unit Since there was no floor drain, I installed a condensation pump with a 25+ feet plastic pipe to handle the water drainage. 6. Reusing my existing Ecobee Controller: I wanted to reuse my Ecobee controller, which meant learning how to properly cable it. In the end, I went above and beyond the manufacturer's recommendations (5-star rating for their phone support). Final Recommendation: After completing this project, I highly recommend careful planning and, if possible, hiring a contractor. I understand that contractors can be expensive, and many avoid complex projects in older homes due to the cost. In those cases, doing the project yourself might be the only viable option—but be prepared for the complexities. ... show more
Reviewed in the United States on March 8, 2025 by Alex Alex
    • Whole House Humidity is FANTASTIC vs a area humidifier
I installed this myself, as i have the skill sets needed, however this install was marginally “not easy”....our boiler “room” was the ideal location for the steam generator, as it has 240 volts, cold fresh water, and a drain. The boiler room has an adjacent wall into a hall way central to the living spaces. However, cutting two holes thru the boiler room wall to install appliance fixtures on both sides of that wall could have been dangerous to hidden wires / pipes. I drilled a small hole on the boiler room side to “look into” the wall to see if the 14” x 7” fan / steam pack would fit in. Knowing that it would, i cut the hole for the fan / steam pack and mounted it. The 45 degree steam inlet from the boiler room took a few tries because the “steam tube” has to be able to drain condensate back into the steam generator. The net result, it the unit outputs vast quantities of humidity, spreading pretty evenly through the house . We are very pleased, we have turned down the heat, because the humidity makes the house feel warmer than previously. We are very pleased, its well made, very quiet .... Very pleased ... show more
Reviewed in the United States on November 7, 2020 by Amazon Customer
    • This unit looked like a good fit
This unit looked like a good fit, and I spoke to the technical support people at AprlAire about it. But the installation and placement in the home becomes a big issue. The minimum clearance from the top of the discharge vent to the ceiling is a minimum of 14 inches, Then, the minimum distance from the main unit and the discharge vent is 17 inches below the vent. This places large restrictions on where the unit can be placed in the house. Further, the discharge hose (at the base) of the unit is 7/8 inches and made of heavy black hose, as is the steam hose at the top of the unit. This limits the placement of the unit to be in the proximity to a drain somewhere in the house. Altogether, the unit is difficult to place in the home. It is best to have the discharge vent on one side of the wall, and the "boiler" on the other. But it is hard to find a spot in the house that meets the cold water supply, hot water drain, together with the minimum vertical separation specifications. It may be nice unit, but I was not able to install it anywhere in the home. ... show more
Reviewed in the United States on May 2, 2018 by Paul Bemis
    • Love these humidifiers
I have one of these at home and also one at my work. They require a moderate amount of electrical and plumbing experience. More than anything, read the directions!
Reviewed in the United States on March 23, 2025 by Jason Abel
    • So Far, so good
I installed the Aprilaire 865 whole house steam humidifier only 10 days ago and at a time when temperatures were unseasonably warm, so I’m providing only initial impressions of the unit’s performance and comments on the installation. The installation is not for the inexperienced amateur nor the faint of heart. The instructions are poorly written, disorganized, and generally confusing. All the examples provided focus on injecting steam into a hot forced air furnace and little effort is expended on standalone installations that the 865 is made for. Be prepared to read those directions carefully and repeat the reading while examining the unit on a table. The electrical part of the job was straight forward, but the plumbing was difficult and I hired a plumber to handle that portion of the work. The humidistat is simple, but it has no smarts nor connectivity which is a disappointment. Choosing the location for the fan box is critical and you should consider that the fan forces the stream of steam downward and take precaution to mount away from furniture and walking paths. This is not mentioned in the manual! Operationally, the unit can really produce steam and in my 3,000 square foot home the humidity rose easily over a 12-24 hour period. After the first couple of days the weather warmed up and hence the unit was not called upon to raise the humidity. I will follow-up in 1-2 months to update this posting. ... show more
Reviewed in the United States on November 28, 2020 by NAS

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