Question about Levoit OasisMist

There are no specific instructions from Levoit that recommend using distilled water for their humidifiers. As a general rule, tap water can be used as long as it does not contain heavy mineral deposits that could affect the device. If you live in a region with hard water, it may be advisable to use distilled or demineralised water to prolong the life of the appliance.

According to our information, the use of distilled water is not mandatory, but is recommended in order to avoid limescale deposits and increase the service life of the product.