[EnderWizard]

Left water in my AiraBreeze overnight and this morning there was a slight musty smell when I turned it on. Anyone else notice this? I’m guessing it’s just from the water sitting, but wondering if I should be emptying it every time.

[PixelKevin]

I usually just dump the water out if I know I won’t be using it for a few hours. The musty smell is pretty normal with evaporative coolers since the water is just sitting there. Not a huge deal, but I wouldn’t leave it overnight full again.

[Tom in NYC]

It’s probably just the water sitting. Most of these coolers get a bit funky if you leave water in them, especially in warmer weather. I wouldn’t overthink it, but emptying it when you’re done isn’t a bad idea.

[Matt__]

I mean, musty smell after water sits overnight is kind of expected with any evaporative cooler, not sure why it would be a big surprise. I just dump mine if I know I won’t be using it for a while and it’s fine.

[Jackson_H]

Pretty normal for these things. I usually just dump the tank if I’m not using it for a while.

[Tom Briggs]

Pretty normal. I just leave mine and it goes away after a few minutes of running. Not worth worrying about.

[LiamW]

Probably just the water sitting, happens with most evaporative coolers. I wouldn’t empty it every time unless you’re leaving it for days.

[Tom_Craig]

Mine does the same thing if I leave water in it overnight. I just run it for a minute and the smell fades. Not a big deal.

[Kevin C]

I’ve been thinking about getting one of these, so this is good to know. Does the smell come back after you run it for a bit or does it linger?

[Paul Graves]

I don’t really get the concern, honestly. It’s a water tank, not a sealed bottle. Some smell is just what happens.

[Carla82]

Never had that issue with mine, but I only use it in hotel rooms and dump the water before I check out anyway. Stagnant water is gonna smell eventually, that’s just how it works.

[Khan]

I usually just dump the water out if I know I’m not using it again that night. Takes two seconds and then no smell at all in the morning.

[Jenna Writes]

Honestly I just dump mine out if I know I’m done using it for the night. Takes two seconds and keeps it fresh in the morning 🤷‍♀️

[EnderWizard]

Pretty much what I figured. I’ve just been dumping the water out at night now and it’s fine in the morning. Takes like ten seconds so no big deal.

[Fiona Blake]

Kevin C asked whether the smell comes back or lingers, and that's the part worth separating. A quick musty whiff that fades after a minute of running is just the standing water, but if it sticks around or gets stronger, that's usually water that's been sitting longer than overnight, and dumping and rinsing the tank is what clears it. EnderWizard, since dumping at night already fixed yours, I'd keep doing that rather than worry about it.

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