this post was submitted on 10 Jan 2025
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Please redirect if there is a more appropriate community for this question.

I'm dealing with dry air, and the humidifiers I had bought before got the tiniest grits of dust or something in them and leaked their whole tank of water. Turns out they needed purified water or distilled water to function long term.

I just want to put tap water into a thing and get humidity into the air. Any suggestions?

Edit, they were indeed ultrasonic humidifiers.

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[–] tal@lemmy.today 43 points 1 day ago (3 children)

I've never heard of a humidifier leaking because of not using purified water.

Humidifiers that use ultrasonic elements to vaporize water can, as I understand it, get buildup from residue. You can get a white dust from them. But I wouldn't expect them to leak.

I've never had any issue with use of tap water in humidifiers. I've used the variety that just wicks water up into a material and has a fan blow through it. Those shouldn't even have the dust potential.

[–] Tar_alcaran@sh.itjust.works 12 points 1 day ago (2 children)

It depends on how hard your water is. The calcium can cause any seal to not be a seal for long

[–] spankmonkey@lemmy.world 12 points 1 day ago (2 children)

I can't think of a humidifier I've owned that had seals for the water, just a bucket/bowel to hold the water and a thing on top that blew air out.

[–] Usernameblankface@lemmy.world 2 points 1 day ago (2 children)

Could you link me to one of these bucket or bowl type of humidifiers?

[–] thermal_shock@lemmy.world 2 points 23 hours ago

I have this one

https://amzn.to/4gUR4qX

have had it 2 years due to dry ass winters.

[–] spankmonkey@lemmy.world 2 points 1 day ago (1 children)

This is the most recent one I've had, the water tank is one solid piece and the electrical bits go down into the water from the top. I had a larger one with the same solid tank with the bits on top as a kid that held a gallon of water, but that was decades ago and I don't see anything like it on a quick search.

https://www.amazon.com/Vicks-Vaporizer-Nightlight-Auto-Shut-Moisturized/dp/B0000TN7ME&tag=amzfinder-20

It cannot leak unless the tank cracks.

[–] Usernameblankface@lemmy.world 2 points 23 hours ago (1 children)

This is very interesting. Does it clog up with hard water?

[–] spankmonkey@lemmy.world 2 points 22 hours ago

I couldn't remember if it cycled water or not and peeked at the user manual which is linked on that page. It says to use tap water and if it is working to slowly to add some salt!

It does have directions for cleaning if hard water causes issues, and I remember it being pretty easy to clean as we did so once a month or so.

You don't have to add any of the vicks stuff either. We just used it as a plain old humidifier.

[–] Tar_alcaran@sh.itjust.works 4 points 1 day ago

I've had one that had a big bucket that had a valve at the bottom. If that doesn't sit flush, I can picture it leaking pretty easily.

[–] tal@lemmy.today 3 points 1 day ago (1 children)

Why would calcium cause a seal to leak? I just searched for "calcium seal leak water" and nothing comes up.

[–] Ferrous@lemmy.ml 5 points 1 day ago (1 children)

Hard water tears up plumbing.

https://beyerplumbing.com/9-ways-that-hard-water-affects-your-plumbing-and-appliances/

If any seal, o-ring, gasket, etc... in a system comes into contact with excessive scale from hard water, the rubber is going to lose its elastic properties, get dirty, and ultimately stop working as well.

[–] Tar_alcaran@sh.itjust.works 3 points 1 day ago

And more basic: if you attach a hard scale lump to a rubber surface, that rubber surface simply won't seal anymore.

[–] daddy32@lemmy.world 2 points 22 hours ago (1 children)

The white dust is supposedly not OK to breathe, offsetting the benefits of increased humidity.

[–] Makhno@lemmy.world 2 points 14 hours ago (1 children)

So I guess you shouldn't take showers

[–] daddy32@lemmy.world 1 points 9 hours ago

It's not steam, it's a mineral dust

[–] ryannathans@aussie.zone 4 points 1 day ago

Also toxic to use ultrasonic vaporised tap water due to metals and contaminants

[–] Blaze@sopuli.xyz 3 points 21 hours ago
[–] anguo@lemmy.ca 22 points 1 day ago (3 children)

Are you talking about an ultrasonic humidifier? AFAIK, those shoot out tiny water particles along with any bacteria that might be present, creating a health risk. You're meant to only use distilled water with those.

[–] Rhynoplaz@lemmy.world 7 points 1 day ago (1 children)

I'm confused. How is putting bacteria from water in the air worse than drinking the bacteria in the water directly?

[–] FooBarrington@lemmy.world 22 points 1 day ago (2 children)

Your stomach kills bacteria etc., while your lung doesn't have a comparable mechanism

[–] tal@lemmy.today 1 points 20 hours ago* (last edited 20 hours ago)

You can add bacteriostatic/algaecide stuff to a tank of water, helps discourage bacteria or algae from growing in it.

I don't think I've seen it coming up for humidifiers, but for evaporative coolers -- which are more-or-less just very-high-throughput humidifiers -- I've seen recommendations to stick something like that in. I use a very dilute disinfectant, can't recall the name off the top of my head.

[–] voracitude@lemmy.world 4 points 1 day ago

That is simply not correct in any way, shape, or form.

https://www.nature.com/articles/ni.3069

In addition to housing an extensive retinue of cells of the adaptive immune system, the lungs have other critical defensive abilities provided by the respiratory epithelial cells. Whitsett and Alenghat describe how the respiratory epithelium juggles its role as the surface of gaseous exchange with its ability to actively combat infectious agents and harmful particulate matter. On its most basic level, the epithelium represents a physical barrier that produces mucus, which entangles and sweeps away damaging agents via the action of the mucus 'escalator'. However, even surfactant proteins, which are involved mainly in diminishing surface tension, 'moonlight' as antimicrobial molecules and are able to opsonise bacteria. The respiratory epithelium is also able to directly sense pathogens and respond via the release of antimicrobial peptides or signal escalation of the immune response through their production of the cytokines TSLP, IL-25 and IL-33. Collectively, these innate processes are usually able to maintain near-sterility of the lungs without the intervention of 'conventional' cells of the immune system.

It's not necessarily "more dangerous" to breathe pathogens than consume them, the issue with evaporative humidifiers is that they don't get cleaned as much as they should so the bacteria keep growing and growing and spraying more and more into the air until they overwhelm your immune system and make you sick. By contrast, you eat something bad and it's one and done and out of your system (usually, assuming it's not really nasty).

That's why you change the water daily. If your tap water is chlorinated it can be assumed to be safe enough for atomizing.

[–] Kit@lemmy.blahaj.zone 6 points 1 day ago

^ This. It's not worth the risk, OP.

[–] socsa@piefed.social 3 points 22 hours ago (1 children)

I honestly have not had this problem with ultrasonic humidifiers. They just need to be cleaned every couple of weeks.

[–] HubertManne@moist.catsweat.com 2 points 21 hours ago

I mean the cleaner the water the less often they need to be cleaned but yeah that is my experience to. Might prolong life to to use the filtered water.

[–] einkorn@feddit.org 15 points 1 day ago

In case you want some more info about humidifier, I recommend Technology Connections on Youtube.

[–] MagicShel@lemmy.zip 15 points 1 day ago

Tap water is filled with minerals that get left behind when the water evaporates into the air. So your choice is purified water or you're going to have to manually clean out all those minerals that accumulate inside the device.

Maybe get yourself a nice reverse osmosis filter. Run that water in your humidifier, coffee maker, ice maker and anything else mechanical that requires water. It'll make all your devices last much longer. I used to have to add a little tap water to a keurig the first few times I used it because the water was so clear the sensor thought the reservoir was empty.

That purifier isn't cheap but you probably only need a small one that produces a few gallons a day. Barring that, someone's suggestion about boiling water in a pan is probably your best bet. The stuff in your water will eventually gum up any device you put it in.

[–] gnomesaiyan@lemmy.world 9 points 1 day ago* (last edited 1 day ago) (1 children)

Maybe filter it first through a Brita or similar water purifier? I'm lazy and just been buying distilled water off the shelf because my well water isn't so hot and I don't feel like replacing four humidifiers every year. The buildup is gross.

[–] Usernameblankface@lemmy.world 2 points 23 hours ago

We did think of this, apparently too late. I'm gathering from other comments that I am dealing with hard water, and the seals on my humidifiers had already crusted over when we got the Brita filter, so it did not fix the issue

[–] olicvb@lemmy.ca 2 points 1 day ago

I'm looking at the Honeywell HEV320BC Moisture humidifier. Seems straight, simple, and without ultrasonic vaporizer.

[–] ShellMonkey@lemmy.socdojo.com 6 points 1 day ago (1 children)

Never had one leak, usually it's the wick or heating elements that get crusty. Or if you have the cool mist type, everything in the room gets a dusting.

A lot of it usually comes from things like Calcium or Limestone and can be pretty readily cleaned off with some vinegar.

[–] Usernameblankface@lemmy.world 1 points 1 day ago* (last edited 23 hours ago)

It was a cool mist type, so no wick or heating element. It was dirt getting into the valve that allows water to flow down from the main reservoir to the tray where the ultrasonic magic happens. Kept propping that valve open to let a constant drip of water through

edit, seems like hard water ruined the seal rather than grit messing things up

[–] tiefling@lemmy.blahaj.zone 1 points 23 hours ago (1 children)

I have Vornado's evaporative one: https://a.co/d/3cZbfx9

Little pricy but worth it. You'll also want to get a bottle of the antifungal additive, you only need a few drops per gal

[–] greywallseverywhere@lemm.ee 1 points 22 hours ago (1 children)

I have a similar Vornado evaporative one. The filters get crusty faster with straight tap water. I usually use filtered water from the fridge.

[–] tiefling@lemmy.blahaj.zone 1 points 21 hours ago

The thing goes through 4gal of water every 2 or so days, how do you get so much filtered water?

[–] frank@sopuli.xyz 6 points 1 day ago (3 children)

Do you have a fireplace or a stove for heating anywhere? My family always used a pan of water on top of those in the winter

[–] Usernameblankface@lemmy.world 2 points 23 hours ago

I wish I had a heating stove or fireplace for this purpose, but alas, it's a gas furnace connected to a central air system

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[–] Bonesince1997@lemmy.world 4 points 1 day ago (2 children)

I use a humidifier by AIRCARE. A bit more doing than a simple tabletop, but nothing too complex. It's a base unit that sits on the floor. Has a removable tank that I fill directly from the tap. I do add a bacteria/algae treatment to about every other fill. Need to replace a filter about once a month (I try to extend it a little longer). And then after the season (about 3-4 months over the winter) I clean the unit. They make different ones, and they're generally much more powerful than a tabletop unit, albeit with a larger footprint.

[–] eRac@lemmings.world 2 points 22 hours ago

Adding to this, some of the AIRCARE humidifiers are just a plastic tub, a wick that sits in it, and a lid with a fan. You'd have to break the tub to leak water.

[–] Usernameblankface@lemmy.world 2 points 23 hours ago (1 children)

Looking at the prices on those filters, wow! That's like an extra subscription each winter to fix dry air. Getting one big enough to get the whole house at once seems good, but 55 to 80 dollars a month is a lot!

[–] Bonesince1997@lemmy.world 1 points 22 hours ago

That's the rub. There are generics. And they do work. Still, an ongoing cost, to the tune of 2 or 3 filters in a season. You're right.

[–] sgibson5150@slrpnk.net 3 points 1 day ago (1 children)

Ours came with this little brick thing that I think is supposed to keep mineral buildup from accumulating, but the company stopped making that humidifier and we can't buy any more of the bricks. We'll probably be shopping for another one next season. :(

[–] voracitude@lemmy.world 4 points 1 day ago* (last edited 1 day ago) (1 children)

The brick was probably just citric acid. Buy a bag from your local supermarket, you'll find it in the kitchen section probably as a crystalline powder, and dump some of that in the humidifier water to also prevent buildup.

Fun fact, you can also run a larger amount of it through your empty dishwasher instead of those dishwasher cleaner packs; those are mostly citric acid too. Cheaper, and no horrible fake lavender scent or whatever it is they like to put in the packs.

Edit: the bricks could also have been hypochlorous acid which is available from various vendors:

  • https://berkshireezbleach.com/
  • https://efchlor.com/water-purification/
  • https://effersan.com
[–] sgibson5150@slrpnk.net 2 points 1 day ago

Tyvm I'll look into it

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