Classic 100 Ultrasonic Cool Mist Humidifier

Humidifiers can help with congestion at night — adding moisture to the air often makes breathing easier. Look for one that’s easy to clean (to avoid mold), quiet for sleep, and with a decent tank so you’re not refilling constantly. I have the Levoit classic 100 and I am very happy with it. I can only recommend it

Quiet humidifiers exist, but most of the stuff on shelves is built to be disposable. The fan in cool‑mist units is the main noise source, and warm‑mist units trade that for a heating element humming away. Still quieter, just a different kind of noise. The part that actually matters for holding a steady humidity is the sensor. The cheap built‑in ones drift fast, then the thing short cycles itself to death. An external capacitive sensor does a lot better, but most manufacturers skip it to save a dollar. The tank and body should be thick ABS or polypropylene. The clear plastic stuff cracks once you put it through a few heating cycles. If you go warm mist, look for a stainless steel boil chamber. Aluminum pits, scales up, and turns into a mess after a season or two. Ultrasonic units are fine as long as the ceramic disc is replaceable. The sealed ones die the moment that disc wears out. Mechanical relays last longer than the tiny solid state boards that fry when the heater kicks on a few thousand times. Some of the older Vicks warm mist units got these details right, mostly because they weren’t trying to be “smart”. Levoit’s Classic line isn’t perfect, but at least they don’t fall apart instantly. Skip anything with a touchscreen. Those panels cook themselves from the steam path and the whole thing becomes landfill in a year.

You should use a cool mist humidifier for baby. We have a levoit and like to a lot. It has an auto shut off feature which is nice.  If the air is too dry in the whole house you may want to consider a whole home humidifier 

You should use a cool mist humidifier. We have a Levoit that works well. But we use it in addition to our whole house humidifier we recently had installed. The whole home humidifier was an investment but worth it

Dealing with a couple dozen in-case humidifiers vs. one room humidifier is bonkers. OP, I'd go one something like Wirecutter and pick a highly-rated model with the features you want. Be aware that there are two types—evaporative and ultrasonic. Both have their ups and downs. Ultrasonic is silent and doesn't require replacing filters, but they release whatever is in the water into the air. That means mineral dust and any bacteria growing in the water. If you go this route, make sure to use only distilled water and thoroughly clean the unit regularly. Evaporative humidifiers on the other hand don't release anything into the air, but you need to replace the filters regularly and they produce some fan noise (not great if you're recording). And even though they don't release stuff into the air, they absolutely still will grow bacteria inside, so you still need to clean them regularly. Personally I use a Levoit ultrasonic unit running with distilled water. It's great and very low maintenance, I just clean it once a week which is much less effort than dealing with a bunch of in-case humidifiers like I used to. And because the humidity in the room is pretty much 45-50% all year round, my guitars almost never need adjustment. Once they're set up, they play great for years with no tweaking required.

It is Levoit and it’s ultrasonic. I can’t deal with the chemical you have to put in the water for evaporative…

They’re also the healthiest, if you have breathing problems or allergies that get worse when we get high levels of small particulate (PM 2.5 ) pollution in the summer. I bought a big Levoit ultrasonic humidifier last winter and my air purifier, which gives exact PM 2.5 levels, read >300, which is crazy high. It wasn’t just the water vapour because even 2 rooms away it was still >100. My warm steam humidifier doesn’t raise the particulate levels at all and doesn’t leave a film of white dust over everything either. It’s the best!

I would stay clear from Levoit or any other ultrasonic humidifier. I had it, and it covers all pictures in the room with white film, because of the minerals that gets to air. And google or ask AI about health risks of ultrasonic vs evaporative humidifiers... I replaced my Levoit with Smartmi evaporative humidifier 3 and can't be happier. Works in HA too.