Whole house humidifiers are less popular than tabletop models, and reviews for these large units are comparatively rare. One brand -- Kenmore -- dominates this category, and the Kenmore 15412 stands out in reviews. This machine can output an astonishing 12 gallons of moisture per day, enough for 2,500 square feet of space. Owners say features like auto-set and auto-off make it easy to operate. However, this whole house humidifier is noisy, and filters must be replaced monthly.
Easy to move around, simple to operate: From auto shut-off to an indicator light to alert owners when the filter should be changed, the Kenmore 15412 was built with ease in mind, reviewers say. The large LCD display displays the set, targeted and current humidity levels, and the 3.9-gallon tank makes for less frequent refilling. The Kenmore is mounted on casters, making it easy to move about the house as needed.
Excellent, whole-house moisture output: The Kenmore 15412 is an evaporative humidifier that can generate 12 gallons of moisture per day, enough to cover 2,500 square feet of space. Its humidistat allows you to adjust the humidity in 5-percent increments, and its double-fill tank system reduces the number of trips you must make to the sink. Professional tests show that the Kenmore 15412 produces very good moisture output.
When it's on, you'll know it. Fan-driven humidifiers like this one are louder than ultrasonic humidifiers, and the Kenmore 15412 is particularly noisy, users say. Some complain that the tank makes a gurgling noise as it empties, which wakes them up at night. Other owners say that the Kenmore gets louder as the filter becomes dirty and the fan works harder to compensate.
Mixed reviews when it comes to quality: Some consumers complain over the quality of this machine, saying that the plastic seems flimsy. Still, it receives strong marks for durability. To help manage bacterial and microbial growth, this humidifier relies on a treated filter. Users say this machine is easy to fill and covers a large area, but the ongoing cost of replacement filters (*Est. $18) -- which must be replaced about once a month -- is a drawback.
Review Credibility: Excellent The editors of ConsumerReports.org have test results on their website for 13 tabletop humidifiers and three console models, including the Kenmore 15412. Each humidifier is rated on its output, ease of use, noise level, energy efficiency and ability to handle hard water. Some user reviews may also be found at this site.
Review: Humidifier Ratings, Editors of ConsumerReports.org, September 2012
Review Credibility: Good The Kenmore 15412 gets an overall rating of 4 stars out of a possible 5 from about 55 users at Sears.com. They say this humidifier produces good moisture, is easy to fill and controls odors well. However, some object to its noise level and the cost of the filters.
Review: Kenmore 12 Gallon Humidifier, Contributors to Sears.com, As of October 2012