Header banner
Revain logoHome Page
Mike Morris photo
1 Level
788 Review
22 Karma

Review on Nispira True HEPA Filter Replacement for Envion Therapure TPP440 TPP540 TPP640 TPP640S Air Purifier - Comparable to Part TPP440F, Pack of 2 by Mike Morris

Revainrating 5 out of 5

Air purifier parts and accessories are not true

in order for them to function. You must push the plug in deeply or it will not snap into the on/off clip. It took me a heck of a lot of time to do this, but I finally got it working.

Pros
  • Replacement every 6 months recommended for optimal performance
Cons
  • Crumpled packaging