How to Troubleshoot a Holmes HM495 Humidifier

Connect the Holmes humidifier firmly to a power supply if the unit is not working and there is no steam issuing from the unit. Replace or reset the circuit breaker or fuse as necessary.

Tighten the cap on the water tank if there is water leaking from the humidifier. Make sure the rubber ring on the tank cap is in place. Replacement rubber rings can be requested from Holmes.

Use only cool water when filling the water tank if there is water leaking from the unit or there is low steam dispensing from the unit. Hot water may also cause pressurization inside the tank, which can cause the tank to crack.

Turn the volume up on the humidifier if cold water has been placed in the unit and there is sufficient power but not enough mist. Make sure the tank is filled to the "max" line.