SKU | What type of Humidifer? | What room size? | What filter? |
000645-800-001N | Cool Mist | Small Room - up to 155 sq ft |
No Filter Needed |
000645-800-001N | Cool Mist | Medium Room - up to 300 sq ft | Type A Filter |
SWM6000-NW2 | Warm Mist | Small Room - up to 155 sq ft | No Filter Needed |
SCM1100-NWM | Cool Mist | Medium Room - up to 300 sq ft | No Filter Needed |
SWM6000-BWM | Warm Mist | Small Room - up to 155 sq ft | No Filter Needed |
001388-800-001N | Vaporizer | Small Room - up to 155 sq ft | No Filter Needed |
SUL900-U | Ultrasonic | Medium Room - up to 300 sq ft | No Filter Needed |
Here are a few possible causes: