HomeProduct Humidification MethodUltrasonic Ultrasonic Filter Showing all 2 results Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Humidifiers PureGuardian Elite 120-Hour Ultrasonic Humidifier ★★★★★ (9 customer reviews) Best deal at: Bestbuy + 5 more - 18% Humidifiers PureGuardian Elite 1.3-Gal. Ultrasonic Warm and Cool Mist Humidifier ★★★★★ (14 customer reviews) Best deal at: Bestbuy $149.99 $122.99 + 2 more