Pureguardian .5 Gal H940AR 30-Hour Ultrasonic Cool Mist Humidifier with Aromatherapy

A: You would need to speak with a medical professional for a proper opinion.

A: I'm a medical professional and i usually tell patients to use cool air because the warm can make the sinuses swell more and cause pressure.

A: This does not have a timer option. It will run until it uses all the water or until it is manually shut off.

A: To cycle through the mist output, you will need to use the power button. When pushing the power button once it is on low, twice is medium, the third push is high and the fourth push is off.

A: We suggest you soak the tank in a 50/50 solution of white vinegar and water and use a bottle brush to reach inside of the tank and the mist tube.

A: This can just be due to condensation on the tank. This can be normal.

A: The inside of the water tank is treated with silver clean technology that help stop the growth of mold and bacteria inside of that tank.

A: There is no required filter for this humidifier.

A: Tap water is ok to use in the unit, but if you have hard water then you may get a white dust. Distilled water is the better option if you do have hard water.

A: This unit will cover up to approximately 300 square feet.

A: It will shut off when it runs out of water.