User Manual Tenergy 2.5L Kitchen & Bath Fixtures

The product is made of ABS materials

Yes you can use running water. Since running water may not be as clean as purified water, you just need to rinse the humidifer container each time before you put the water inside the humidifer.

Unfortunately, this humidifier is not energy star rated.

This humidifier does not have the purifying function.
However, it is completely safe to use tap water with the water setting as a hot.
For best results, it is recommended to use purified water

This humidifier weighs 3 Lb (Empty) and 8 Lb (Full Load).