The Planet Waves PW-HPK-01 Humidipak Automatic Humidity Control System (for guitar) is the only maintenance free, two-way humidity control system for guitar.

Protect your guitar effortlessly with the D'Addario Humidipak, the world’s leading maintenance-free humidity control system designed specifically for guitar cases. This innovative two-way system automatically maintains an optimal 45-50% relative humidity level inside your instrument case, safeguarding your guitar from dryness or excess moisture without the need for refills or manual adjustments.

Main Features

• Maintenance-free, two-way humidity control system for guitar cases
• Automatically maintains ideal 45-50% relative humidity by adding or depleting moisture
• Safe, soft mesh pouch protects your instrument’s finish
• Packets last 2 to 6 months in sealed cases
• Simple replacement with refill packs ensures ongoing instrument care

Unlike traditional refillable humidifiers, the Humidipak intelligently adds or removes moisture as required, adapting to seasonal changes, temperature fluctuations, and geographic conditions. This ensures your instrument remains in perfect playing condition and preserves its finish over time.

The Humidipak Kit includes three units housed in a soft mesh pouch that is safe for your guitar’s finish. Each packet operates for 2 to 6 months, depending on your environment, and fits neatly within any sealed hard-shell case. When the packets become firm, simply replace them using the Humidipak Replacement Pack for continued protection.

Frequently Asked Questions ➤ How does the Humidipak maintain humidity without refills?
The Humidipak uses two-way humidity control technology that releases or absorbs moisture automatically to maintain a stable 45-50% relative humidity inside your guitar case, eliminating the need for manual refilling.
➤ How long do the Humidipak packets last?
Each Humidipak packet lasts between 2 and 6 months depending on environmental conditions such as temperature and humidity levels. Packets should be replaced when they become firm.
➤ Can the Humidipak be used in any type of guitar case?
Yes, the Humidipak is designed to work best in sealed environments like hard-shell cases to maintain the correct humidity levels around your instrument.
➤ Is the Humidipak safe for all guitar finishes?
Absolutely. The packets come in a soft mesh pouch that will not harm your guitar’s finish, ensuring safe and effective humidity control.
➤ What is included in the Humidipak Kit?
The kit includes three Humidipak packets and a soft mesh pouch for placement inside your guitar case. Replacement refills are sold separately.

Outside the UK?

Please note that shipping costs outside the UK are very approximate and can vary radically. Please contact us with your Country and Post/Zip Code for an accurate quote. Many thanks. Please also note if you are outside the UK we will not charge you tax on your purchase but you may be liable for import duty in your country.

Please also note that all our stock is sold for the UK market. If you are buying from outside the UK, please check that it is suitable for use in your country before purchase.