The best replacement for purifier is humidifier.

The best alternatives to purifier are rated as following:
★★★★★  humidifier
★★★  dehumidifier
★★★  filter
★★★  ionizer
★★★  sentinel
★★  hound
★★  manticore
★★  air cleaner
★  carsomyr
★  air humidifier
★  water filter
★  clarifier
★  hepa
★  ionic breeze
★  ro
  air filter
  sentinel rift
  air sanitizer
  humidifier which is better
  an ionizer
  air conditioner
  sharper image
  hepa filter
  furnace filter
  water softener
  air ionizer

Your alternative for purifier is not listed? Suggest!
Speaking about purifier, one probably shouldn't forget about hepa filter.

Other search terms related to purifier and their ratings are:
★★★★★ hepa filter
★★★★ electricity
★★★ humidifier
★★ ro
★ hot and cold water
★ ro and uv
You have in mind a companion for purifier and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of purifier in all years. Click on graph for more.
purifier
humidifier
dehumidifier