The Sunpentown SU-4010 is an ultrasonic tabletop humidifier that can produce either warm or cool mist -- enough to humidify 500 square feet of space. The moisture output can be adjusted with a manual dial, but there is no built-in humidistat. Users say that this humidifier produces plenty of good, fine mist, and it runs quietly.
The Sunpentown SU-4010 is an excellent option for consumers who are looking for a humidifier that is compact and can emit either cool or warm mist. There aren't too many bells or whistles on this model, but provided you pay close attention while filling this tank, it should satisfy most consumer's needs. If you have concerns about durability, the more expensive Air-O-Swiss Ultrasonic 7144 (*Est. $ 200) may prove more reliable.
Minimal features, but simple and effective humidifier: The Sunpentown SU-4010 humidifier is an excellent pick for those consumers who are looking for a straightforward machine with both cool- and warm-mist options. The large control knobs are easy to use, and users praise the Sunpentown's dual nozzles, which rotate 360 degrees to pinpoint where you want the mist to go.
Fine mist, but some durability issues: This ultrasonic model can produce either warm or cool mist, enough to humidify 500 square feet of space. The moisture output can be adjusted with a manual dial, but there is no built-in humidistat. Users say that this humidifier produces plenty of fine mist, and it runs quietly. Thanks to its demineralization cartridge (called the Ion Exchange Filter), it does not leave behind white dust like many ultrasonic humidifiers.
A low humming, but otherwise quiet: Most reviewers agree that the Sunpentown SU-4010 is incredibly quiet. It generates a low humming noise when on, but most consumers and reviewers say that it is only nominally noticeable.
Generally positive consumer feedback: While most reviewers were generally happy with the Sunpentown SU-4010 humidifier, we did find some who noted problems with leaking. Other reviewers say this can be easily fixed by simply paying closer attention to the washer when screwing the cap back on (it sometimes can become knocked out of place). However, most reviewers say that for a lower price than most ultrasonic models, this version is a good buy.
Review Credibility: Excellent ConsumerReports.org has test results for 45 tabletop humidifiers, including the Sunpentown SU-4010, and three whole house (aka console) models. 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: Very Good The editors of AllergyBuyersClub.com award the Sunpentown SU-4010 a rating of 4 stars out of 5 overall. Its strongest features include its quietness, ease of use and value for price, but it loses points for its flimsy construction and lack of features such as a built-in humidistat.
Review: Sunpentown SU4010 Ultrasonic Dual Mist Humidifiers, Editors of AllergyBuyersClub.com, As of October 2012
Review Credibility: Very Good The Sunpentown SU-4010 receives an overall rating of 3.7 stars out of 5 from more than 360 users at Amazon.com. Users say it runs quietly and produces plenty of good, fine mist. Its compact size is also a plus. However, we read several reports of problems with leakage and other mechanical failures, and at least one user considers this model a safety hazard.
Review: SPT SU-4010 Ultrasonic Dual-Mist Warm/Cool Humidifier with Ion Exchange Filter, Contributors to Amazon.com, As of October 2012