Credenza Evaporative Humidifier 696 400HB

I would likely recommend an evaporative humidifier, not a warm mist one. The mist ones have a lot of problems, such as being more prone to bacteria growth and harder to clean. They also try to add more moisture than the air can actually hold, resulting in mineral condensation (white dust) appearing everywhere over time, especially if you have hard water. Aircare makes a decent console-style evap humidifier with a decent tank size and is pretty easy to clean. I used one for years until we moved to a house with a humidifier on the furnace. Now I use a smaller Honeywell evaporative humidifier upstairs only. It gets filled each evening, runs constantly all winter, and cleaned each weekend. I went through about half a dozen of those warm mist ones before converting. It didn't matter the brand, how much I treated the water of cleaned them, they were all pieces of junk that lasted only 1-2 years. Crane ones were probably the worst.

Had this exact situation, bought a ultrasonic in for a small room and all others were evaporative. We have hard water. I have a very good Airthings monitor, which had been showing perfect PM 2.5 with all humidifiers running. From the day the ultrasonic humidifier was on, PM 2.5 went off the charts well away from the room itself. Took 1.5mos to figure it out. It was driving me crazy. The minute I turned it off, dropped precipitously back to 0 from 100+. Insane. Also, it was impacting the combustion of our natural gas stove - yellow flame. Back to blue now without a blip. I threw that sucker out and bought a couple monster capacity air cares and a steam one to replace in the small room. Zero issues. I was completely shocked how fast and how far those particles traveled, via hvac.

I own this and my wick turned orangey from my hard water so quickly. I use bacteriostatic additive so I don’t think that bacteria is the issue but the wick changing color certainly doesn’t give me confidence so this humidifier doesn’t feel low maintenance to me, at least not with hard water

I have a whole house evaporative humidifier that I use year round that has been going strong for 4 years so far. The warm mist humidifiers I've used last only a year before my very hard water breaks them. And ultrasonic humidifiers coat everything in a sticky dust that's hard to clean. The humidifier I use (older version of this one: https://share.google/fFdK2WzaIkj0Lc09W) has a wick that needs replacing about once every other month, so long as I keep it saturated. I buy a cheaper generic wick from Walmart to save money. Other than that, I just need to clean it occasionally to remove dust and prevent bacterial growth.

Evaporative is the solution. Once you try one you will never go back willingly. I had one for several years that used a single wick replacement each season. The only maintenance I had to do was add the anti microbial solution to the tap water i dumped into the container every other day, it was spotless inside after months of continuous use. I had a fairly large aircare console that had a humidistat as a controller, it ran through 5 gallons in about two days all winter long.m Before I got an evaporative I went through several cool mist, ultrasonic, style humidifiers. Without fail they all became a petri dish of slime and mold within a week on average. I cleaned these things with vinegar, dish soap, antibacterial solutions, and finally bleach which only extended the average by a couple of days. These require DI water since any dissolved salts will get misted as well, precipitating as dust and being an irritant for many people. I've also read some comments about the slime and bacteria getting turned into mist and either spreading spores or endotoxin to cause problems. Tldr: evaporative is cheaper and easier to use