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H2O Smart Humidifer 1.1 litre directions and set-up

Congrats on your new H2O Smart Humidifier in the 1.1 litre larger size (if you're looking for the H2O 750ml set-up directions they're here). It comes complete with everything you need to plug and go, runs both corded or cordless, ready to put an end to those brown, dry edges, crispy leaves, dry tips, and sort out curling and wilting leaves for all your humidity loving indoor plants. Spoil your house plants. Give them not just what they need, but what they love.

Here's how to get set up, the different modes and settings, tips and more...

H2) humidifier 1.1 litre

What does it come with?

Included in the box is the top and base unit, the USB charging cord, carry handle, and already installed are the two cotton core filters, and low-water sensor. Getting set-up is super easy in 4 steps. Here's how...

How do I get set up?

1. Unbox your H2O Smart Humidifier. 

2. Take the plastic sticker off the mist outlets on the top. Unscrew the top from the base and take out the USB charging cord and handle inside. The cotton core filters comes already installed (two outlets so two filters), ready to go.

: I SUCK at easily getting the top screwed back on the base, yet my partner does it first-try, like it's no big deal. There's obviously a trick to it that I haven't mastered yet, or maybe my hands are too small ;)

3. Screw the top back on to the base. Attach the handle by slipping on to the holders each side. Plug it in and charge for at least 2 hours minimum (ideally for the full 3.5 hours charge time). 

Step 4 below...

H2O humidifier plugs

4. Once charged, those tiny 4 blue lights on the front, above the +/- button (shown below), will change from flashing to solid blue. Unplug the cord from the top. Un-screw the top from the base. Fill the base with water to the 'fill here' line. It takes a full 1.1 litres. Screw the top back on the base. Wait 10 minutes for the unit to prime (water needs to thoroughly soak the cotton wick cores). If  not already removed, take off the protective sticker over the top of the mist output before first use. Then off you go! Have a play with the different settings...

What do the buttons do?

The mist and light selector is on the top, shown below. The two outlets are on the top also. On the side at the back are the USB input, USB output, and on/off switch. On the front are the charge indicator lights, and the +/- mist strength adjuster. Find out how to change the settings below...

How do I change between the 4 mist modes?

The M button on the top controls both the mist and lights depending on single press, or long press. Use single presses to change mist modes, or long presses to change the lights, as follows...

FIRST, SINGLE PRESS: Press M once, it will beep and turn the mist on double continuous mode. Both outlets will turn on full. This is some serious output, so unless the air is very dry - or you're wanting rainforest level mist - this mode may leave your shelf wet.

+/- MIST ADJUSTER: To change from double to single continuous mode, press the minus button. It will beep and turn one outlet off. To change back to both outlets on full, press the plus button, which will beep and turn both outlets back on full.

SECOND, SINGLE PRESS: The second press of the M button will beep again, and change to double intermittent mode. One outlet will run for 1.5 seconds, then the other outlet will run for 1.5 seconds, on repeat.

+/- MIST ADJUSTER: To change from double to single intermittent mode, press the minus button. It will beep and change to only one outlet cycling on for 1.5 seconds, then off for 1.5 seconds, on repeat. Press the plus button to go back to double continous mode. Single continous mode gives you the longest run-time.

Third, single press: The unit will beep and the mist will turn off.

How do I change between light modes?

The M button top also changes the light settings, just using long presses instead.

FIRST, LONG PRESS: The first, long press puts you in Night Light mode. A dim, blueish-white light will glow gently from all sides, through the holes in the base.

SECOND, LONG PRESS: The second, long press puts you in Colour Cycle mode. Ambient light appears through the holes, gently cycling through everything from deep sapphire blue to forest green, bright turquoise to white, yellow, orange, red, pink and everything in-between. It's very peaceful, almost hypnotic, watching the colours blend and change. The mist looks so neat lit up with the different colours at night too.

THIRD, LONG PRESS: This puts you in Custom Single Colour mode. The moment you see a colour you really love, long press the M button to select it and it will stay on that colour, turning cycle mode off.

FOURTH, LONG PRESS: This turns the lights off completely. You can use the various mist settings with the lights in any mode, or off, or use the lights by themselves.


These units are super easy to clean. Being opaque inside, algae can't grow like see-through humidifier chambers. Plus with its smooth, round sides, you eliminate all those nooks and crannies so many humidifiers have, making wiping it down and keeping it clean a breeze.

Water and a soft cloth should be enough to keep it clean, but you can also use a dash of white vinegar mixed with water if needed. When cleaning, avoid water getting on or in the top where the electronics, USB plug and settings buttons are or it may break your unit and cause it not to function any longer.  

Low-water auto switch-off

Inside the unit you'll see a white probe with 2 metal ends. That's the low-water sensor. When the water level drops so low the metal sensors are exposed to air, the unit will turn itself off so it doesn't run dry. Clever little thing huh?


Low-power alert

When running cordless and the charge runs out, the LED lights will flash red to remind you to recharge. Same when the water level runs out.

On the front, above the +/- button you'll see 4 small blue lights. They are the charge indicators. When fully charged, all 4 lights will be solid blue.

As the charge level drops, the lights change from solid, then to flashing, before turning off. When below 50% the first light on the left will still be solid, the 2nd will change from solid to flashing, and the 3rd and 4th lights will be off. When charge reaches below 25%, the 1st light will change from solid to flashing, and the other 3 will be off. 

How long does it take to charge?

The first charge should be a continuous 2 hours minimum, as mentioned in the set-up directions above. A full charge is 3.5 hours to get the maximum cordless run-time. Run-times are approximate as they depend on a number of factors (such as charge left, amount of water in the reservoir, relative humidity in the air, and air temperature).

You can rapid charge anytime, as the rechargeable batteries are lithium-ion so they don't retain a memory, however to extend the life of rechargeable batteries, it's still recommended to fully discharge and fully charge each time.

If you put your humidifier in to storage, rechargeable batteries should be fully charged and discharged about once a season / 4 times a year (every 3 months) to extend their lifetime.

If your humidifier works corded but not cordless, that's a sign you either need to charge for longer (all 4 blue lights should be solid) or your charging brick is too low voltage. Plug it in directly or find a higher voltage brick (like a lightning charger).


Where can I buy the H2O Smart Humidifier?

From Love That Leaf, that's me! Find them in the plant humidifiers category here while stocks last.

Warning: Dumb things not to do

Always remove the top and put it aside before refilling. Don't submerge the humidifier in water for any reason. Don't pour water over the humidifier. Add water in to the base only, directly in to the water reservoir inside. It's extra important to avoid the top getting wet as that's where the electronics are.

When cleaning, a damp cloth is all that's needed. The unit should not be submerged, washed in running water, or soaked in water. Water and electricity never mix. When refilling, always unplug the unit first. Never use the unit with wet hands. Dry your hands first. Avoid touching the buttons, cord or plug with wet hands.

Take care to put the USB plug in correctly, and never force it. Mini USB's are small, so you can damage them or the plug if you're not careful. Force is never required. The plug will easily slot in if you have it in the correct position.  

This is a water-only humidifier. Don't run the unit with perfume, essential oil, or anything other than water in the reservoir. It will cause residue to build up over time in areas you can't clean, eventually blocking the filter, and potentially breaking or damaging the unit.

This is not a toy. Use by children should be closely supervised by an adult. It is intended for home, domestic, indoor use, not for commercial or business use.

Use or treatment of the unit other than directed may damage or break it, and will void the warranty. Wear and tear, misuse or user error is not covered by the warranty. The 6 month warranty covers manufacturing faults or defects only. If anything should go wrong, contact the retailer first. When purchased in New Zealand, the Consumer Guarantees Act applies.


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