10 Best Aprilaire 865 Whole House Steam Humidifier of 2025

Tested and Reviewed: Top 10 Aprilaire 865 Whole House Steam Humidifier deals with expert ratings from 8.1 to a perfect 10

March 2026 Edition

Editor's Choice

9.7

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

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Editor's bottom line:

“This aprilaire 865 whole house steam humidifier is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

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

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9.5

Aprilaire

AprilAire 800 Whole-House Steam Humidifier, Automatic Steam Humidifier, Large Capacity Whole-House Humidifier for Homes up to 10,300 Sq. Ft., White

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Main Highlights

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
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
PURIFIED WATER NOT REQUIRED Electrode technology requires impurities in the water to promote the transfer of electricity. Water filtration is not recommended minimizing installation complexity and operating costs
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

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9.5

Aprilaire

AprilAire 5768 Steam Humidifier Maintenance Kit with Replacement Canister for Whole House Steam Humidifier Models: 800, 801, 865, 866

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Main Highlights

BUY WITH CONFIDENCE: This genuine AprilAire Steam Humidifier Maintenance Kit 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 to optimize the performance of your AprilAire Whole House Steam Humidifier
COMPLETE MAINTENANCE KIT: No need to find the parts yourself! This kit contains all components required to maintain peak performance of your AprilAire Whole House Steam Humidifier Models: 800, 801, 865, 866. Reference Owner's Manual included with all AprilAire Humidifier Maintenance Kits before performing humidifier maintenance.
MAINTENANCE KIT INCLUDES: (1) Model 80 Steam Canister, (2) Model 4978 Electrode Wires, (1) Model 5258 O-Ring, (1) Model 4004 In-line Strainer, and Owner's Manual
PERFECT AprilAire FIT: Designed specifically for your AprilAire Whole House Steam Humidifier Models: 800, 801, 865, 866 - for optimal performance replace Steam Canister and O-Ring annually, inspect Electrode Wires and In-Line Strainer annually and replace every three years, or sooner if they become loose or damaged
HUMIDITY FOR HEALTH AprilAire humidifiers help you keep the relative humidity in your home within a healthy range. Adding humidity to dry air has been shown to reduce the incidence of respiratory infections and symptoms related to allergies and asthma by minimizing the formation of bacteria, 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.

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9.2

Taco

Aprilaire 865 Ductless Automatic Steam Humidification Package, White

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Main Highlights

Includes Models: 800 (Steam Humidifier), 850 (Fan Pack), 65 (Control), and 4028 (Drain Trap).
The 850 works with the Aprilaire Model 800 Steam Humidifier to provide comfortable humidity levels.
Does not require any Duct Work.

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9.0

Aprilaire

AprilAire 80 Replacement Canister for AprilAire Steam Humidifier Models 800, 801, 865, and 866 (Pack of 1)

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Main Highlights

BUY WITH CONFIDENCE - This genuine replacement canister was designed and manufactured in the USA by AprilAire - the leader in indoor air quality solutions
PERFECT APRILAIRE FIT - optimize the performance of your AprilAire Steam Humidifier Model 800 or 865
FOR OPTIMAL PERFORMANCE replace canister annually
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
INCLUDES O-RING for a leak-proof seal
HEALTHY AIR APP COMPATIBLE - This AprilAire Steam Canister is compatible with the AprilAire Healthy Air App! The Healthy Air App features steam canister replacement reminders, plus educational content about maintaining the perfect humidity levels in your home and information on outdoor air quality in your area.

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8.8

Aprilaire

AprilAire 4978 Replacement Electrode Wires for AprilAire Whole House Steam Humidifier Models: 800, 800LC, 801, 865, 866 (Pack of 2)

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Main Highlights

BUY WITH CONFIDENCE: These genuine replacement electrode wires were designed by AprilAire, the leader in Indoor Air Quality solutions, and made in the USA
PACKAGE INCLUDES: two (2) electrode wires, Model No. 4978, for AprilAire Whole House Steam Humidifier
FOR OPTIMAL PERFORMANCE: inspect electrode wires every year and replace every three years, or sooner if they become loose or damaged
PERFECT AprilAire FIT: Designed specifically for your AprilAire Steam Humidifier Model 800, 800LC, 801, 865, or 866
MAXIMIZE HEALTHY HUMIDITY - feel more comfortable while also preserving items in your home susceptible to damage from changing humidity or dry conditions

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8.6

CLLOMAGY

CLLOMAGY 800 Replacement Canister for AprilAire Steam Humidifier Model 800 865,80 Canister Replacement for AprilAire 800 Steam Humidifier Whole House

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Main Highlights

Fitment: Direct 80 replacement canister for Aprilaire steam humidifier model 800 and 865.Replace 80 canister annually for steam humidifier provide better performance.
Durable&Reliable: The 80 steam canister for Aprilaire 800 humidifier adopts high quality material, high temperature resistance and not easy to deform, keep the steam humidifier working stably in winter/heating season.
Improving house humidity: The humidified air discharged from the 80 canister for Aprilaire 800 replacement canister can keep the optimum moisture level and increase the humidity in the whole house, effectively improve the dry indoor environment, keep breathing healthy and promote skin condition.
Working principle: 80 replacement canister for Aprilaire 800 whole house humidifier with O-Ring for leak-proof seal are connected by wires to generate an electric current that heats water to boiling and produces steam, then distributed throughout the house through the HVAC system.
Easy to install: Check the electrode wires before installing the 80 canister for Aprilaire humidifier 800 and connect the top steam hose to the wires tightly.

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8.3

CLLOMAGY

CLLOMAGY 80 Replacement Canister for AprilAire 800 Steam Humidifier Model 865,800 Replacement Canister for AprilAire 80 Whole House Steam Humidifier

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Main Highlights

Fitment: Direct 80 replacement canister for Aprilaire steam humidifier model 800 and 865.Replace 80 canister annually for steam humidifier provide better performance.
Durable&Reliable: The 80 steam canister for Aprilaire 800 humidifier adopts high quality material, high temperature resistance and not easy to deform, keep the steam humidifier working stably in winter/heating season.
Improving house humidity: The humidified air discharged from the 80 canister for Aprilaire 800 replacement canister can keep the optimum moisture level and increase the humidity in the whole house, effectively improve the dry indoor environment, keep breathing healthy and promote skin condition.
Working principle: 80 replacement canister for Aprilaire 800 whole house humidifier with O-Ring for leak-proof seal are connected by wires to generate an electric current that heats water to boiling and produces steam, then distributed throughout the house through the HVAC system.
Easy to install: Check the electrode wires before installing the 80 canister for Aprilaire humidifier 800 and connect the top steam hose to the wires tightly.

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8.1

Aprilaire

AprilAire 800 Large Capacity Whole-House Steam Humidifier for Homes up to 10,300 Sq. Ft. + AprilAire 5768 Steam Humidifier Maintenance Kit with Model 80 Steam Canister (1 Pack) Bundle

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Main Highlights

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
MAINTENANCE KIT INCLUDES: (1) Model 80 Steam Canister, (2) Model 4978 Electrode Wires, (1) Model 5258 O-Ring, (1) Model 4004 In-line Strainer, and Owner's Manual
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
PERFECT AprilAire FIT: Designed specifically for your AprilAire Whole House Steam Humidifier Models: 800, 801, 865, 866 - for optimal performance replace Steam Canister and O-Ring annually, inspect Electrode Wires and In-Line Strainer annually and replace every three years, or sooner if they become loose or damaged
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
BUY WITH CONFIDENCE: This genuine AprilAire Steam Humidifier Maintenance Kit 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 to optimize the performance of your AprilAire Whole House Steam Humidifier
PURIFIED WATER NOT REQUIRED Electrode technology requires impurities in the water to promote the transfer of electricity. Water filtration is not recommended minimizing installation complexity and operating costs
COMPLETE MAINTENANCE KIT: No need to find the parts yourself! This kit contains all components required to maintain peak performance of your AprilAire Whole House Steam Humidifier Models: 800, 801, 865, 866. Reference Owner's Manual included with all AprilAire Humidifier Maintenance Kits before performing humidifier maintenance.
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
HUMIDITY FOR HEALTH AprilAire humidifiers help you keep the relative humidity in your home within a healthy range. Adding humidity to dry air has been shown to reduce the incidence of respiratory infections and symptoms related to allergies and asthma by minimizing the formation of bacteria, 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.

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8.1

FullMayPro

80 Replacement Canister for AprilAire 800 Steam Humidifier,80 Steam Canister Replacement for Aprilaire 865 Canister,80 Canister for Aprilaire 800 801 865 866 Whole House Steam Humidifier-2Pack

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Main Highlights

Widely ApplicationsThe 80 Replacement Canister can replace the AprilAire 800 replacement steam canister and is compatible with AprilAire 800, 801, 865, and 866 whole-house humidifiers. It can also replace the AprilAire 80 replacement steam canister to help your steam humidifier maintain optimal operating conditions.
Maintain Optimal HumidityThe whole-house humidifier generates steam by applying electricity to two electrode plates in 80 canister,releasing humidified air that increases the humidity throughout the entire house and maintains it within the optimal range of 40% to 60%. This effectively improves dry indoor environments, promotes respiratory health, improves skin condition, and comprehensively safeguards your well-being.
Replacement CycleThe 80 Canister substitute replaces the Aprilaire 80 steam canister. Water produces steam, leaving some sediment in the canister. To keep the equipment at optimal performance, replace the steam canister annually. But due to varying water conductivity, the actual replacement cycle may differ. The humidifiers Service indicator signals when replacement is needed. Do not use scale inhibitors, as they drastically shorten the steam canisters lifespan.
How It WorksThe 80 replacement canister for AprilAire 800 whole house humidifier with O-rings for leak-proof sealing. They work by generating electricity through a wire connection, heating water to boiling point and producing steam, which is then distributed throughout the house via the HVAC system. When installing the replacement canister, first check the electrode wire and securely connect the top steam hose to the wires tightly.
Reliable&SturdyThe 80 steam canister of the AprilAire 800 humidifier is made of high-quality ABS plastic, which is heat-resistant, non-deformable, and non-degradable, ensuring stable operation of the steam humidifier during winter and heating seasons.

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Our Best Overall Choice

Best Choice

9.7

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

Free Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

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

Show Price

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