This is our buying guide on the best humidifiers for growing weed in 2023. Below is a quick summary of our top recommendations. Scroll further down to read our in depth, hands on reviews, for each humidifier.
Pure Guardian Humidifier for Weed
- 1 gallon water tank
- 320 sq-ft coverage
- 54 hour runtime
- 3 mist speed settings
- Silver Clean lining inside water tank
- Prevents mold and mildew
- LED night light
- Essential oil tray
- Adjustable mist nozzle
- Budget-friendly
Crane Humidifier for Growing Weed
- 1 gallon water tank
- Easy to refill and clean
- Can run up to 18 hours on one tank
- Can cover up to 500 sq-ft of space
- Fully adjustable mist volume
- 360 degree adjustable mist nozzle
- Filter free design
- Less maintenance required
- Optional demineralization filter for hard water
Levoit Humidifier for Growing Weed
- 6 liter water tank
- 60 hour runtime
- Can cover over 500 sq-ft of space
- 300 ml/hr maximum mist volume
- Customizable mist volume
- Large knob for adjusting the mist volume
- Provides a wide range of adjustment
- 360 degree adjustable mist nozzle
- Can direct mist to any spot in a room
- Integrated gran handles
- Make it easier to move this large humidifier
- Easier to clean
- See-through water tank
- Lets you notice any mineral deposits more quickly
- Surprisingly quiet for such a large humidifier
- Best easy to clean humidifier
Diving into this piece, we’re examining the top-notch humidifiers ideal for cultivating cannabis.
When it comes to marijuana, it has distinct humidity demands. Intriguingly, as the plant transitions through various growth stages, the required moisture level in the surrounding air to maintain its health and optimal growth also changes.
If you’re nurturing an indoor cannabis cultivation operation, like a weed grow tent or room, especially in a region with notably low relative humidity, a humidifier becomes essential to effectively manage the relative humidity.
On my quest to find the ultimate humidifiers for cannabis cultivation, Crane’s unit has taken the crown. The water tank on this beast is more sizable than most, guaranteeing extended operation and superior coverage, especially beneficial for larger grow tents and rooms.
Over the past few years, I’ve plunged deep into researching and reviewing humidifiers. This wealth of hands-on experience allows me to offer refined recommendations that, in turn, assist you in making a well-informed purchase.
Stay tuned to delve deeper into my insights on the best humidifiers for growing weed.
Crane Humidifier for Growing Weed
BEST OVERALL
Diving Right In
Crane’s humidifier for cannabis cultivation is truly an all-rounder. It flaunts a respectably sized water tank, outperforms most in terms of runtime, and blesses you with fully adjustable settings. These adjustments are particularly crucial when it comes to cannabis growth, given its need for fluctuating humidity levels across different growth stages.
Design-wise
Blending aesthetics with practicality, Crane’s humidifier for cannabis cultivation sports an eye-pleasing teardrop design. Not just a pretty face, it cleverly integrates a handle that adds to the overall ease of repositioning and moving the unit within a space.
We’ll dive deeper into it shortly, but the water tank’s unique design enables more efficient cleaning and refilling.
This gadget comes with a detachable power cord that brings along a couple of perks. Firstly, should the power cord suffer damage, sourcing a new one becomes a breeze. Secondly, relocating the unit within a space minus the cable hassle is now an achievable reality.
Finally, the straightforward controls located up front offer a whole lot of adaptability which I loved.
Water Tank Capacity
The water tank boasts a capacity just shy of a gallon. For a cannabis humidifier of this size, that’s commendable, and the water tank’s innovative design plays a vital role in achieving this impressive feature.
Cleaning and refilling the water tank are tasks I found to be simpler and quicker. The wide bottom opening of the water tank aids in spill-free water filling, a feature cannabis enthusiasts will truly value. After all, a water spill could spike the humidity levels in an enclosed cannabis grow tent or grow room, potentially doing more harm than good.
Runtime
With a 1-gallon tank, this cannabis humidifier’s runtime significantly extends when the tank is full. It’s designed to function around 24 hours on standard settings, although I observed that it only managed about 18 or so hours before bowing out.
Yet, this runtime suffices for most of your cannabis grow tent/room humidifying needs. Plus, the refill simplicity meant I never found the runtime to be inadequate.
Coverage
Crane has been meticulous in their design, and the coverage rating is no exception. It can manage up to 500 sq-ft of space, making it perfect for even the most spacious cannabis grow tents or larger grow rooms.
Mist Volume
The mist volume control of this humidifier, courtesy of the large knob upfront, is fully customizable. Unlike inferior humidifiers, this one offers extensive adjustments, and the sensitive control knob enables precision mist volume control.
Adjustable mist volume is pretty much indispensable for a cannabis humidifier, as periodic changes are necessary for optimal plant growth.
Noise Levels
If your cannabis cultivation operation is indoors and you prefer a low-profile, the whisper-quiet operation of Crane’s humidifier is indeed a blessing. Even when operating on higher mist volume settings, this humidifier doesn’t make any noise or sound.
Special Features
While this cannabis humidifier might not come with a slew of flashy features, it still has a couple of interesting aspects up its sleeve.
Firstly, the mist nozzle is fully adjustable, a feature I found extremely handy for directing mist to a specific spot in the room.
The unit flaunts a filter-free design, which translates into less maintenance. However, if needed, an optional demineralization filter for hard water is available.
This feature shows forward thinking on Crane’s part, as very low humidity typically results from extremely cold weather and high altitude, conditions where hard water is more prevalent.
I would recommend against using hard water in your cannabis humidifier, as it could easily lead to mineral build up or mold, potentially damaging your crop.
However, if you don’t have a choice, this demineralization filter provides a handy workaround.
Who’s It For?
In my opinion, the Crane humidifier for cannabis growth is designed for someone in need of a high-performance humidifier that also offers extensive adjustability. It is a reliable unit, equipped with everything you actually need, and free of unnecessary extras.
Pros
- 1 gallon water tank
- Easy to refill and clean
- Can run up to 18 hours on one tank
- Can cover up to 500 sq-ft of space
- Fully adjustable mist volume
- 360 degree adjustable mist nozzle
- Filter free design
- Less maintenance required
- Optional demineralization filter for hard water
Cons
- Not a ton of special features
Pure Guardian Humidifier for Growing Weed
BEST BUDGET
First Impressions
The Pure Guardian humidifier for cannabis cultivation brings a suite of upscale features down to a more palatable price point. While it might not match up in terms of performance to our top pick, it surprisingly surpasses it in certain aspects.
Speaking of Design
Constructed from high-quality plastic, this cannabis humidifier promises durability and longevity. The entire unit is taller and slimmer compared to other humidifiers I’ve tested, enabling it to fit effortlessly into tight spaces.
I found this especially useful for smaller cannabis grow tents, where room is at a premium.
There’s a minimal set of controls to tinker with, and the few buttons controlling power and integrated lights are placed ergonomically.
Water Tank Capacity
The Pure Guardian steps up to the plate in the water tank department, outperforming its budget-friendly competitors. It houses a large, 1-gallon water tank, promising enhanced runtime and coverage.
Interestingly, Pure Guardian has outfitted the water tank with what they term ‘Silver Clean’. This special internal lining hampers the growth of mold and mildew.
For cannabis grow tents and rooms, this feature is invaluable as even the slightest hint of mold could devastate your entire crop.
Runtime
The quoted runtime is an impressive 70 hours. However, I suspect this estimate was under optimal conditions with low mist settings, as I could only clock in around 54 hours under regular mist volume settings in a humid environment.
Nonetheless, a runtime of 54 hours is quite impressive and worth lauding.
Mist Volume
The high runtime is partly attributed to the lower mist volume across all settings, which happens to be one of my qualms with this cannabis humidifier.
This means that, even on the highest mist volume settings, it doesn’t quite excel at humidifying larger spaces swiftly. To be fair, it gets the job done, albeit slower than some other units I tested.
You do have three different mist speed settings at your disposal, so you’re free to experiment and find one that suits your needs.
Coverage
This humidifier rebounds nicely, boasting a coverage rating of around 320 sq-ft. While this might not reach the heights of our top pick, it is still adequate to humidify even the largest cannabis grow tents and rooms.
Noise Levels
The noise levels are slightly on the higher side, but still within reasonable ranges. Running this humidifier won’t disrupt the peace of your neighbours or impede your ability to hold a normal-volume conversation.
Special Features
This is one of the few cannabis humidifiers I tested that features an essential oil tray. While it’s generally not recommended to diffuse essential oils in your cannabis grow room or tent, it’s a nifty addition if you plan on using the humidifier elsewhere in your home.
Other thoughtful touches include the integrated nightlight and an indicator light that notifies you when the tank needs refilling.
This ultrasonic humidifier automatically switches off when the water tank is empty, protecting the internal components from damage.
Lastly, this unit includes an adjustable mist nozzle, letting you direct the mist exactly where it’s needed in your cannabis grow tent or room.
Who’s It For?
I believe the Pure Guardian cannabis humidifier is designed for someone unwilling to splurge on a humidifier unit. It offers one of the longest runtimes I tested, decent coverage, all at a price that’s noticeably lower compared to other units.
Pros
- 1 gallon water tank
- 320 sq-ft coverage
- 54 hour runtime
- 3 mist speed settings
- Silver Clean lining inside water tank
- Prevents mold and mildew
- LED night light
- Essential oil tray
- Adjustable mist nozzle
- Budget-friendly
Cons
- Mist volume could have been higher
Levoit Humidifier for Growing Weed
BEST PREMIUM
First Impressions
Levoit’s humidifier is the one you’ll only need to buy once. It brings on board superior build quality, impressive longevity, stellar performance, and a unique suite of features you won’t find anywhere else.
Design Elements
Levoit adopts a divergent design approach for this humidifier. It comes with a large, fully transparent water tank that allows me to monitor any build-up or mold that could potentially threaten my cannabis cultivation.
This humidifier also sports a digital display providing all the essential information. The control layout is far more comprehensive compared to other humidifiers I’ve seen, offering you greater customization options.
Even refilling the tank is a breeze, courtesy of the spill-preventing top-fill design.
Water Tank Capacity
Speaking of the water tank, it holds a whopping 1.5 gallons. You might anticipate that a larger tank would be more challenging to clean, but that’s not the case. It’s surprisingly simple to dismantle the whole unit for regular cleaning or descaling.
Runtime
As the old adage goes, ‘there’s no replacement for displacement’, and this Levoit humidifier for cannabis cultivation stands testament to it.
Its enormous 1.5-gallon water tank bestows upon this humidifier a runtime of 60 hours.
Unlike others that require optimal conditions and low mist settings to achieve this number, the Levoit humidifier can deliver almost 60 hours, even with higher mist volume settings.
Coverage
Its coverage rating is on par with other high-performing cannabis humidifiers.
This unit is rated to cover just above 500 sq-ft. Irrespective of your cannabis cultivation size, this Levoit humidifier is up to the task of humidifying it.
The higher coverage rating also enables you to use this humidifier in larger spaces such as bedrooms, living rooms, hallways, and so on.
Mist Volume
Levoit’s cannabis humidifier is capable of delivering mist volume up to 500 ml/hr. In layman’s terms, that’s far beyond other units on this list, and most others.
Such high mist volume results in effortless and quick humidification of a space. It offers more consistent humidification of even larger spaces.
What’s cool is that this unit allows you complete control over the mist volume, enabling you to dial it down for extended runtime, or regulate the humidity at your desired level.
Noise Levels
The larger size and superior performance do have a minor downside: the humidifier gets slightly louder when pushed to the limit.
This is only a minor concern when you push the mist volume and fan speed to their max settings, and even then, all you’ll hear is a muted hum. For general use, this ultrasonic cannabis humidifier is as quiet as they get.
Special Features
But the Levoit cannabis humidifier is just warming up. It brings to the table an extensive array of useful features that outshine every other humidifier I’ve tested.
This is the only truly ‘smart’ humidifier on our list. While others are basking in the glory of an auto-shutdown feature, Levoit is pulling ahead with features like automatic humidity control, app integration, voice control, and smart home integration.
You can even schedule times for this humidifier to automatically switch on or off, meaning one less step in the cannabis growing process for you to fret over.
Levoit doesn’t fall short of our top budget pick, equipping this humidifier with an essential oil tray, and even providing aroma pads for you to test. This feature is primarily useful when you’re using the humidifier outside the grow room, but it’s worth noting.
Who’s It For?
This Levoit cannabis humidifier is designed for those who demand high performance and reliability, and also value smart features that allow control of the humidifier directly from a phone, by voice, or with the included controls.
Pros
- 6 liter water tank
- 60 hour runtime
- Can cover over 500 sq-ft of space
- 300 ml/hr maximum mist volume
- Customizable mist volume
- Large knob for adjusting the mist volume
- Provides a wide range of adjustment
- 360 degree adjustable mist nozzle
- Can direct mist to any spot in a room
- Integrated gran handles
- Make it easier to move this large humidifier
- Easier to clean
- See-through water tank
- Lets you notice any mineral deposits more quickly
- Surprisingly quiet for such a large humidifier
- Best easy to clean humidifier
Cons
- Large size may prevent placement in smaller weed grow rooms and tents
