Hamilton Beach and True Air Humidifier Filters and humidifier Parts Hamilton Beach is using the True Air (TrueAir) brand name for their Humidifier and Air Purifier Filters. True Air Filter for models: 05518, 05519, 05520, 05521 True Air and Hamilton Beach part numbers: 05910,05910-01, 05920,05920-01, 05900 Hamilton Beach Humidifier Filter True Air Humidifier Filter 05910 05910-01 - $6.27 Each When You Buy 12 $9.99, 6/$45.25, 12/$75.20 Hamilton Beach Humidifier Filter True Air Humidifier Filter 05920 05920-01 - $6.62 Each When You Buy 12 $9.99, 6/$47.77, 12/$79.41 Hamilton Beach Humidifier Filter 05900 True Air Humidifier Filter - $5.49 Each When You Buy 6 $5.99, 6/$32.94 Hamilton Beach Humidifier Filter 05910 True Air Humidifier Filter $6.99 each when you buy 8 $7.99, 8/$55.92 Hamilton Beach Humidifier Filter 05920 True Air Humidifier Filter- $8.99 when you buy 8 $9.99, 8/$71.92 Hamilton Beach Humidifier 05518 TrueAir Cool Mist Humidifier - $24.13 $24.13 Search Here: E-mail Us Privacy Policy Shipping Rates View Cart