Review on 🍯 Honeywell HAC-504 Series Humidifier Replacement Filters - Bundle of 2 (Updated Version) by Obhed Mac

This upgraded blue pre-filter filter from Honeywell is a significant improvement over the previous version of this filter. I use my humidifier 24/7. during the winter months. I've been using these Honeywell filters on the HAC-504 for 7 years, these upgraded filters last much longer and don't fall apart like previous filters if you follow the directions on the box to turn the filter daily. I also recommend rinsing the filter in warm water when it starts to get crusted and scrubbing the base of the humidifier with a paper towel once a week to remove any residue. All in all it's a big improvement over the previous filters and I highly recommend it.