We know noise level is an important factor for some folks when picking a basement dehumidifier—especially if you are watching TV or have a bedroom nearby. So we used a decibel meter to test a dozen different models, on various speeds. The quietest model we found is TOSOT’s 1500 square foot unit (model GDN30AZ-A3EBA2C).
Now, let’s talk about noise level. 60 decibels is roughly the level of a normal conversation. This humidifier measured in the 48 to 53 decibel level (depending on the fan speed).
So to be clear: when running, this dehumidifier still makes noise. We haven’t yet found a model that is completely silent AND has the power to dehumidify a basement. But when compared to other models that max out at 70 decibels, the TOSOT dehumidifier was much quieter by comparison.
What We Liked
• Alarm to indicate full tank.
• Easy to use, all digital touch panel.
• Power outage settings retained.
• Water level indicated on front of tank.
• Indicator lights for filter cleaning. The maker says you have to clean the filter after 250 hours of use—or roughly, every 11 days.
• Hose outlet to drain into sink floor.
What’s Needs Work
• Long term reliability could be better. We notice some reports that these units run for a year or 18 months and then quit. That’s disappointing, as other models we tested have longer life spans.
• Alarm is very loud. We like the alarm feature, but it is VERY LOUD . . . especially when it goes off in the middle of the night!
• Hard to connect hose outlet. The hose outlet is recessed inside the unit, making connecting a drain hose more difficult than other models we researched.