Instructables

Increase room humidity without a humidifier?

Its the middle of winter and it gets very cold and dry here.  In my dorm room, the humidity is usually around 18%.  We aren't allowed to have humidifiers, so how can I increase the room's humidity?  Also, there isn't an air duct heating system; we use radiators.

FoolishSage2 years ago
So you want to humidify without using things designed to humidify? hmm.

First I would find out why no humidifiers are allowed, if there is a valid problem with increased humidity (such as icing or rot) then you really shouldnt be finding loopholes.

If the actual humidity isn't the problem you could rig a few variations of a system (short of building an actual humidifier of course):
1.) Spray bottle. Either for plants or cleaning products and just fill with (warm) water and spray into the air every now and then (the finer the mist the better)
2.) Boiling water. (either on a hotplate or with a heating element). Pretty much boil water 24/7 and you should have a very humid environment at the cost of a high power bill and some risk of fire.
3.) The waterfall. Allow water to flow with maximum contact with air (a cylinder filled with bits of plastic and a fan pushing air into the bottom for example). This will also cause cooling though
4.) Wet sponge. This is the extremely slow equivalent to the waterfall and what is often used in small humidors for cigars. Just have a soaked sponge exposed to the air (maybe with a small fan to spread the humidity somewhat faster)

That is just off the top of my head, I'll let you know if I can think of more.
So, what if i were to put a bowl of wet towels right next to the plant ? AND how much times would i Spray the bottle? every hour. three hours?
lavancena11 months ago
Wow, I was trying to find some good techniques to raise humidity but these really aren't very effective. I've tried most of these and they don't work very well. I need to raise the rH by about 25% in my garden. It's alright I'll figure something out.

At least I know I'm thinking along the same lines as the public at large.
balamashrooms11 months ago
hey..can some one please let me know how radiator helps to maintain humidity
canucksgirl2 years ago
The easiest way to increase the humidity is to get a small disposable aluminum loaf pan, fill it up a little with water and place it onto your radiator. When the water gets low, simply add more water.
Libahunt2 years ago
Water always evporates into the air. More evaporation if its hotter and more windy. So any source of open water will somewhat humidify the room. Climate conditions kept the same a bigger surface area gives more evaporated water.

Some bowl, aquarium or wet towel could help a bit.

Sometimes a container with water is hung on the side of radiator to quicken evaporation with that heat - I do not know if this is officially considered humidifier or not.

You could not use laundry dryer-machine, but hang clothes to dry in the room instead.

Plants that need to be watered often and generously - not only soil but also leafs give away moisture. Bigger and softer (not waxy looking) leafs usually more than others - look for tropical origin plants. But your room probaby needs to look like half-greenhouse before you see significant difference on hygrometer.


But as FoolishSage said, find out what's the problem with humidifiers as you probably do not want mold spores in the air instead. There is a possibility that outer walls are so cold that water consendates onto them and mold starts to grow. There are just some buildings that do not have any healthy regimen - one or other problem is always present. Then try to go outside more and open the window when possible. In this case I still recommend some plants, they don't do so huge work about humidity, but they can remove bad chemicals from air and make you feel better.