The Honeywell HUL545W is an ultrasonic cool mist humidifier designed for small to medium-sized spaces, approximately 300 to 500 square feet. It features a 3.8 L (1.0 gal) water tank with an automatic shut-off function when empty and includes a tray for adding essential oils. This unit does not have a built-in humidistat and offers a runtime of up to 15 hours.
This humidifier is decent for general home use, providing sufficient humidification capacity for smaller apartments, living rooms, and large bedrooms. It operates quite efficiently, and its 15-hour runtime is suitable for running while you are at work or class, though it is somewhat shorter than some comparable models. However, properly sterilizing the water tank can be a bit of a hassle. Pros: – Compact footprint. – Good humidification capacity. Cons: – Water tank is difficult to properly clean. – No built-in humidistat.