D'Addario Humidipak PW-HPK-01 Two-Way Humidification System


88 out of 100. Incorporating 2550+ ratings and reviews.

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D'Addario Humidipak PW-HPK-01 Two-Way Humidification System

The D'Addario Two-way Humidification System is a maintenance-free in-case humidifier that does away with the usual sponge and water system.

It is designed to provide 2-way humidity control, increasing or reducing the moisture as needed to maintain around 45% humidity level.

And it does all this without the need for maintenance and water refills, the downside being the need to replace the included pouches every 2 to 4 months.


  • Weight: 1.28 oz
  • Suspension: Packets are placed in Nylon pouches that you place in the soundhole and near the headstock
  • Longevity: Short

Convenience is the main strength of the D'Addario Humidipak, it is a true set and forget humidifier that works without any hitch for many. Satisfied users include those owners of different brands, including expensive guitars from Taylor and Martin.

There are a few who caution that this may dry up quicker in places with extreme humidity, while others aren't too happy with having to replace the packs regularly.

If you're looking for a hassle-free in-case humidifier for your acoustic guitars, then do checkout the D'Addario Humidipak.

Although this was previously on our recommended list, there are now more highly rated options available which you can see in our guide to The Best Guitar Humidifiers & Case Hygrometers.

About the Author

Alexander BrionesAlexander Briones

I've written about and researched music gear for many years, while also serving as a music director at my local church, in addition to teaching guitar, bass and mentoring young musicians.