Why it matters
The Everlasting Comfort 2.5L Humidifier is an ultrasonic humidifier with a 2.5 liters tank, rated for 425 square feet.
Run time per fill, per the maker: 24 hours.
Aim for 40 to 60 percent relative humidity indoors: drier air irritates airways and skin, wetter air feeds dust mites and mold. Use distilled or demineralized water to avoid the white mineral dust ultrasonic mist leaves behind.
A full tank holds about 2.5 liters, which adds roughly 6 pounds of water to carry or lift to the sink and back.
Spread over 24 hours, that tank works out to about 104 milliliters an hour, the rate on the setting the run time was measured at; higher settings empty it faster.
Its tank of 2.5 liters is one of the smallest tanks we cover: 11 of the 78 humidifiers with a stated figure come in lower, and the range runs from 0.7 liters to 20.1 liters.
Its stated run time of 24 hours is one of the shortest run times we cover: 4 of the 69 humidifiers with a stated figure come in lower, and the range runs from 10 hours to 130 hours.
Price-wise it sat in the cheapest third of the 74 ultrasonic models we cover when we checked; the button shows today's price.
It qualifies for our lists Best Humidifiers for Bedrooms, Best Cool Mist Humidifiers, where it is ranked against every model that meets the same rule.
Compared with the Everlasting Comfort 6L Humidifier: rated room size 425 square feet here vs 500 square feet; power draw 24 watts here vs 22 watts; run time 24 hours here vs 50 hours.
Who it's for, and who should skip it
Good fit if
- Dry winter bedrooms
- Owners who will clean it weekly
Look elsewhere if
- Rooms far larger than its rating
Pros and cons
Pros
- 2.5 liters tank
- Runs 24 hours per fill
- Rated for 425 square feet
Cons
- Needs regular cleaning to stay hygienic
- Ultrasonic mist leaves white dust with hard water
Limitations to weigh
- The Everlasting Comfort 2.5L Humidifier listing states every figure we compare on; they are the seller's numbers, measured on the setting it chooses.
Specifications
The bracket shows where each figure comes from.
| Model number | Humidifier for Bedroom | Retailer |
|---|---|---|
| Room coverage | 425 square feet | Retailer |
| Noise (seller) | Whisper-quiet | Retailer |
| Wattage | 24 watts | Retailer |
| Filter type | Filterless | Retailer |
| Capacity | 2.5 liters | Retailer |
| Run time per fill | 24 hours | Retailer |
Alternatives worth comparing
More room humidifiers we cover
Final verdict
A solid choice for dry winter bedrooms. Confirm the model it fits before ordering.
Where to buy
Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure