Humidifier buying checklist
A short list to run before you pay for a humidifier.
The room
Measure the room and compare it with the maker's rated coverage for the exact model number.
The type
Decide between cool mist (ultrasonic or impeller), warm mist or steam, and evaporative. Our types guide explains each in EPA terms.
Water and cleaning
Ask yourself whether you will empty and dry the tank daily and clean it every third day, as the EPA advises. Check how the tank opens and whether parts fit in a sink.
Ongoing parts
Find the filter, wick, or cartridge part number and replacement schedule in the manual.
Controls
Check for a humidistat or a separate hygrometer, so you can keep the room under the 50 percent level the EPA names.
Returns and recalls
Read the seller's return window before you pay. Search cpsc.gov/Recalls for the model, new or used.
This is general information, not medical or purchasing advice.
Sources: EPA, Use and Care of Home Humidifiers; CPSC, Recalls and Product Safety Warnings.
FAQ
Next: humidifier types
Four types, in EPA terms.
