How to Make a Humidifier at Home

On this page (8 sections)

1. How do you make a humidifier at home with things you already own?
2. Does a stovetop pot really make a humidifier?
3. How much humidity does a homemade setup add to a room?
4. What is the best gauge for a homemade humidifier?
5. Which water should go in a homemade humidifier?
6. How do you keep a homemade humidifier clean?
7. Is a homemade humidifier safe around kids and pets?
8. Where does a homemade humidifier stop being enough?

You can make a humidifier at home with a bowl of water and a towel draped over it, a stovetop pot set to a low simmer, or a glass of water on a radiator. All three add moisture only as fast as water evaporates, so they help one room and not a whole house.

Before you fill a bowl, know that the cheap version is the slow one. A towel and a fan move water into the air, a kitchen pot makes the most visible steam, and a gauge is the only honest way to tell whether either worked.

A homemade setup works because dry indoor air pulls moisture out of anything wet. The trick is putting water where warm air can reach it, and knowing when to stop.

How do you make a humidifier at home with things you already own?

A bowl, a towel, and an open spot on a counter are the base recipe. Fill the bowl with water, drape one end of the towel in the water and let the rest hang over the edge, and set it where air circulates.

The towel wicks water up and the fan or room air pulls it off.

That makes it a passive humidifier, and a small one. You'll see the water level fall over a day, which is the only sign the setup is working.

Don't put the bowl next to a wall or behind a sofa, because still air means slow evaporation.

Place the bowl on a saucer or a tray so a knocked towel doesn't soak the surface. Keep it away from pets, toddlers, and anything electrical.

A wider bowl beats a tall one here, because more water meets the air at the surface. A shallow dish with a folded hand towel will usually lose water faster than a deep jug with a corner of cloth in it, so check the level each morning and top it up.

Does a stovetop pot really make a humidifier?

Yes, a pot of water left at a low simmer is the strongest homemade option. It sends moisture into the kitchen faster than a bowl ever will, and it costs only the gas or power to keep it warm.

The catch is attention. Never leave a simmering pot unattended, and don't use it overnight in a bedroom.

Keep the water level above the bottom of the pot, set the heat as low as it will go while steaming, and turn it off before you leave the room.

Use a pot with a lid and keep it partly off to let steam escape. Steam can lift paint and warp cabinet doors, so run it for an hour or two at a time and check the walls for damp.

Tap water in a pot leaves a chalky ring as it boils down, and that ring hardens if you let the pot sit. Empty and wipe the pot while it's still warm, then refill it fresh next time rather than topping up old water.

How much humidity does a homemade setup add to a room?

Not much, and the amount depends on the size of the room. A bowl of water and a towel add moisture only where the air can pick it up, so a large living room barely moves.

A closed bedroom shows the change first.

Cold air holds less moisture than warm air, so a room near 70°F (21°C) fills up slower than the same room heated above 80°F. Winter air that a furnace and windows have dried out is the hardest case, because the house keeps pulling the moisture away.

That's why a bowl in one room can read wet while the hallway still feels dry. Judge it with a gauge, not with a feeling.

What is the best gauge for a homemade humidifier?

The thing that decides whether your homemade humidifier works is the number on a humidity gauge. Aim for 30% to 50% relative humidity in a home during heating season, which is the range most building guidance and makers use.

The TempPro TP50 displays temperature and humidity and shows a comfort, dry, or wet icon for a quick read. TempPro says it's accurate to about +/-2 to 3%RH and +/-1°F, and it refreshes every 10 seconds.

It also keeps high and low records, which is useful when you want to know how low the room got overnight.

Its stand sits on a counter and a magnet holds it to the fridge. The unit is small, about 2.62 inches tall, so it fits on a windowsill or a shelf near the bowl where you'll actually look at it, and it runs on one AAA battery.

Read our guide to the best humidifiers for dry air if the gauge says the room stays low even with a homemade setup running all day.

Which water should go in a homemade humidifier?

Tap water is fine in a bowl or a pot, because nothing is sprayed into the air. The water evaporates and leaves minerals behind in the bowl, on the towel, or on the pot, and you wash them off.

Distilled water shows almost no film, which makes it the easier choice for a towel that runs all week. Amazon Grocery's distilled water comes in 1-gallon jugs, purified by steam distillation, filtered, and ozonated, so it's a straightforward refill for a bowl you want to keep clean.

A gallon is also a useful measure of pace. If a bowl holds about a gallon and it takes a week to evaporate, the setup is putting a slow trickle into the room, which tells you how often to refill and how much to expect.

Don't add vinegar, essential oils, or salt to the water. Vinegar is a cleaner, not a humidifier additive, and oils on a towel can leave a residue that's hard to rinse out.

How do you keep a homemade humidifier clean?

Rinse the bowl and towel every day, and dry both fully when you stop using them. Standing water and damp cloth are where mold shows up first, and a daily rinse takes a minute.

Wipe the bowl with warm soapy water once a week. If a towel starts to smell musty, replace it rather than washing it over and over.

When the pot or bowl picks up a hard mineral ring, a small brush reaches the corners better than a sponge. The XPMBF set has 11 pieces with flexible heads for tight spaces, so it handles a narrow pot rim or a bottle-shaped bowl.

The set is made for humidifier tanks and tight gaps, and the brand lists glass, metal, plastic and tile among the surfaces it suits. Rinse every brush head and stand the tools upright to dry.

Is a homemade humidifier safe around kids and pets?

A bowl or pot of water is safe if it's out of reach and never left hot. The real risk is a spill on a hard floor, so put the bowl on a tray and keep the cord of any fan away from the water.

A simmering pot belongs on a back burner with the handle turned inward, and never on a stove a child can reach. Turn off the burner and let the pot cool before you carry it to another room.

If someone in the home has asthma or another breathing condition, ask your doctor before you rely on a homemade setup. A plug-in unit makes the humidity easier to control, and some buyers prefer that for a bedroom.

Where does a homemade humidifier stop being enough?

A homemade humidifier is enough for one room that needs a small lift. It is not enough for a whole house, a large open-plan space, or a winter that keeps the gauge near 20%.

At that point you're looking for a unit that puts a steady mist into the air and holds a set humidity. A warm-mist unit is a good fit for a nursery or a bathroom, and our roundup of the best cool mist humidifier options covers the quieter side of that choice.

If you want a recognized name, our guides to the best Levoit humidifier and the best DREO humidifier show which models suit a bedroom, a large room, or a home office.

The decision rule is simple. Try the towel and bowl first, watch the gauge for a week, and buy a unit only if the number stays below 30% with the bowl refilled every day.

That's how to make a humidifier at home without spending much: start with a bowl and a towel, keep a pot to the kitchen for a quick boost, and let a gauge tell you when the homemade route has done all it can.

Frequently asked questions

Is a bowl of water on the radiator enough to humidify a room?

It adds a little moisture, not enough to shift a very dry room much. A bowl that holds a gallon or more of water and sits where heat moves air across it works best, and you still need a gauge to see whether the reading moves.

Is a stovetop pot a safe humidifier for a bedroom?

No. A simmering pot stays in the kitchen while someone is awake and watching it, because the stove needs attention and the steam can touch counters and cabinets.

Carry the moisture to the bedroom after the pot is off, rather than leaving it running overnight.

Does a homemade humidifier raise the humidity of a whole house?

One bowl or one simmering pot raises the humidity of one room at most. A whole house, or a home with a forced-air furnace, dries out faster than a kitchen pot can keep up with, so a plug-in unit does that job.

Can I use tap water in a homemade humidifier?

Yes, because nothing is atomized into the air. Tap water leaves a white mineral film in the bowl and on the towel as it evaporates, so rinse and dry the bowl every day.

Distilled water is the better choice if you have hard water.

How do I stop a homemade humidifier from getting moldy?

Rinse the bowl and wring the towel every day, then dry both fully when you stop using them. Mold grows on damp cloth left standing for days, and a quick daily wash keeps the cloth fresh.