Dual 100 Ultrasonic Top-Fill Cool Mist 2-in-1 Humidifier & Diffuser

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

Been using a Levoit for about 2 years now and it's solid, just don't slack on the weekly cleaning or you'll regret it lol. The top-fill design is clutch when you're lazy about refills

I recommend Levoit's top-filling models instead. They're not at Costco, but they work great, are much easier to fill and clean than bottom filling ones, and the brand is pretty solid. Just make sure to keep up with cleaning, ultrasonic humidifiers require it or they get nasty. I clean with both vinegar and bleach (separately, of course) and mine have been working for years.

I just ordered a levoit brand one, having had other levoit ones that last a long time. The difference in the new is it is top fill, and has a big opening, and made specifically for easy cleaning. I will also make it a point to never put tape water in it, distilled only. I used to use the additives that supposedly make it not gunk up, but in the Midwest/Ohio valley area, our water has a lot of dissolved minerals (limestone especially) and is very "green" with lots of living organisms too small to be seen, even when treated.

Levoit. Get yourself one that is a top fill. You'll thank me later.