Best Guitar Humidifiers


It might be easy to overlook the importance of a guitar humidifier when assembling your gear, but something as cheap as a $20 humidifier can have a huge impact on your guitars longevity. Anyone who has left their guitar in a hot car, or next to a heater during the winter time knows the damage that can occur: warped necks, sharp frets from shrunken fingerboards, and annoying buzzing to name a few  . That’s why we wrote this guide to the best guitar humidifiers, so you can always be sure your gear is well taken care of.

In addition to humidifiers, many guitarists have elected to purchase a humidifier gauge. Although not necessary, the gauge will help you make sure that humidity levels are staying even all year round. For rooms that contain guitars or other wood instruments, you typically want to stay between 40-55% humidity.

Key Features to Look for in a Guitar Humidifier

Essentially there are three main types of guitar humidifiers: Sound Hole, Case, and In-room humidifiers. All differ on their delivery method of humidity and have their disadvantages and advantages. Ultimately, it will come down to personal preference, however, if you like to hang your guitars on your wall and you have an In-room humidifier, it’s important to still have either a Sound Hole, or Case humidifier when traveling and/or gigging.
There’s nothing worse than unreliable equipment, and guitar humidifiers are no exception. Delivering consistent humidity for years to come is one aspect that makes some of the best guitar humidifiers what they are. But just as important, is the humidifiers ability to retain water and not leak in, or on, your guitar. Your guitar’s wood can be just as damaged soaking in water as it can from dry air, so a reliable humidifier is key. 

Best Guitar Humidifiers

D’Addario Acoustic Humidifier

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Pros: Price, Best Buy Award
Cons: Maintenance
Type: Sound hole

With all things considered (reliability, price, quality), the D’Addario Acoustic Humidifier is the clear winner of our Best Buy Award.

At about less than $10, the D’Addario Acoustic Humidifier is a simple guitar humidifier that can deliver just as good of results as the pricier humidifiers – if well taken care of.

There are essentially two important factors to keep in mind when caring for this humidifier: (1) it’s key to not OVER-wet the sponge when refilling. A soaked sponge can lead to leakage out from the humidifier and on to your guitar. An easy way of avoiding this is to always remember: damp, not wet. (2) The sponge within the humidifier will have to be replaced occasionally to avoid mold, but using the same sponge for many months at a time is easily done. D’Addario sells replacement sponges, but honestly you’re better off just purchasing a replacement pack from a local dollar store – save some money!

Herco HE360 Humidifier


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Pros: Price
Cons: Cumbersome
Type: Case

The Herco HE360 Humidifier is the cheapest humidifier on the list (at about $4), but don’t let such a low price tag fool you, the HE360 is a great Case humidifier that’s relied on by many.

To wet the HE360, simply dip the container into water and the clay inside will soak it up. After that just seal the container and you’re ready to throw it into your guitar case. This humidifier will need to be refilled anywhere between 1-2 weeks depending on climate, and how often you remove your guitar from its case. But it is a relatively care-free humidifier, and we felt it did a fair job at keeping humidity at the proper level.

Our only complaint of the Herco is its somewhat bulky and cumbersome design. Placed within your case it has the potential to wack your guitar while being lugged around (depending on your case design of course). However, at such a low price point it’s difficult being overly critical of what is ultimately good guitar humidifier.

D’Addario Two-Way Humidification


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Pros: Mess and maintenance free
Cons:  Pricey upkeep
Type: Sound hole

If you don’t want to be bothered with checking humidity levels, or refilling water every week or so, then the D’Addario Two-Way Humidification system is the one for you.

The reason it’s called a ‘two-way’ humidification system is because it not only humidifies your guitar up to optimal levels, but it also dehumidifies it by preventing it from over-humidifying. This is great for anyone doesn’t want to be bothered with staying on top of humidity levels at all times. Another major bonus is the fact that you’ll never have to fuss with refilling water, just simply put the packet in the pouch and hang it in the sound hole.

However, the bonus of not having to add water leads to one significant drawback – expensive upkeep. D’Addario claims the packs last anywhere between 2-4 months, but that might be a bit shorter for you in the winter when dry air is at its worst. Thus, requiring you to buy packets every couple months or so.

If purchasing pouches occasionally doesn’t bother you, D’Addario’s two way humidifier is a great fuss-free guitar humidifier.

Oasis OH-1 Humidifier

best guitar humidifiers

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Pros: Mess free
Cons: None
Type: Sound hole

Oasis solved the potential ‘spill’ problem that most humidifiers present in a truly elegant way.

Attached inside the humidifier is a syringe that you fill with water and screw back into the humidifier. This allows your water to be locked tight and breath gradually through the Gore-Tex , which lessens the possibility of leaks.

Usually once a week, you’ll be aware the Oasis OH-1 needs a refill when the outer shell appears to be shriveled up.

Honeywell HCM-6009 Humidifier


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Pros: Quiet, Good Coverage
Cons: Tanks Are Awkward To Fill
Type: In-Room

If you’re looking to hang your guitar, or create a guitar room with multiples axes on the wall – then an in-room humidifier is a must.

We like the Honeywell HCM-6009 for its reliable performance, and quiet design (who wants a loud humidifier in a guitar room!?). Not to mention its ability to cover multiple rooms/large spaces – it definitely gets the job done. Furthermore, its evaporative qualities will leave no residue on furniture and guitars in the room, like other humidifiers tend to do.

A few complaints include the awkwardness of the tanks to fill as well as (to a lesser degree) its “industrial” look. The HCM-6009 is not incredibly pretty, but it definitely gets the job done!


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