Oasis HH Combo OH-30 Humidifier-Hygrometer

  • Item # 1318779
  • Model # OH-30
Top Rated

The Oasis HH Combo OH-30 is the only humidifier/hygrometer designed to fit in the soundhole of a steel string acoustic guitar. When using a humidifier to boost the humidity inside a musical instrument… Learn More


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Maintains integrity of wood instruments.

Order one for each of your finest instruments.


  • Offers single-unit humidifierhygrometer combination
  • Includes adjustable humidification settings
  • Allows for user re-calibration of hygrometer
  • Maintains humidity for 15 days or more before needing to be recharged
  • Has a drip-resistant polyvinyl acetate sponge which holds 10x its weight in water