Why it matters
The Provirtec HC-12 Humidifier is an ultrasonic humidifier with a 6.5 liters tank, rated for 538 square feet.
Run time per fill, per the maker: 65 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.
The listing names a top-fill tank.
Top-fill tanks are filled from above without carrying the tank to a sink, which also makes them easier to wipe out.
A full tank holds about 6.5 liters, which adds roughly 14 pounds of water to carry or lift (filled in place from the top).
Spread over 65 hours, that tank works out to about 100 milliliters an hour, the rate on the setting the run time was measured at; higher settings empty it faster.
Its tank of 6.5 liters is one of the largest tanks we cover: 62 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 65 hours is one of the longest run times we cover: 61 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 middle 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 Large Rooms, Best Cool Mist Humidifiers, where it is ranked against every model that meets the same rule.
Compared with the Provirtec HC-02 Humidifier: rated room size 538 square feet here vs 500 square feet; power draw 25 watts here vs 200 watts; run time 65 hours here vs 60 hours.
Who it's for, and who should skip it
Good fit if
- Large living rooms and open plans
- Owners who will clean it weekly
Look elsewhere if
- Rooms far larger than its rating
Pros and cons
Pros
- 6.5 liters tank
- Runs 65 hours per fill
- Rated for 538 square feet
Cons
- Needs regular cleaning to stay hygienic
- Ultrasonic mist leaves white dust with hard water
Limitations to weigh
- Not stated on the Provirtec HC-12 Humidifier listing: noise level. Ask the seller or check the manual before relying on it.
Specifications
The bracket shows where each figure comes from.
| Model number | HC-12 | Retailer |
|---|---|---|
| Room coverage | 538 square feet | Retailer |
| Wattage | 25 watts | Retailer |
| Capacity | 6.5 liters | Retailer |
| Run time per fill | 65 hours | Retailer |
Alternatives worth comparing
More room humidifiers we cover
Final verdict
A sensible choice for large living rooms and open plans. Confirm the model it fits before ordering.
Where to buy
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