
LEVOIT
Superior 6000S Smart Evaporative Humidifier
Smart, large capacity; cleaning and whole-home coverage polarized.

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I don't know a out the others, but the Venta humidifiers are very reliable, repairable, and quiet. They also don't leave resedue on anything and don't have any cloth cartridges to get moldy. Just follow the directions and put in the water treatments (or make your own.) They are expensive for a reason. I expect my lw45 to be running for the next 25 years at least.
I got a used LW45 for a great price on FB marketplace. Love it so far! I’ve tried ultrasonic humidifiers before and hated them. Compared to other evaporative humidifiers from my research, I found the Venta by far the easiest to clean and least maintenance required. It’s also super energy efficient. I live in an apartment so a built-in HVAC humidifier is not an option
i got a Venta LW45 for years, happy with it. its simple, gentle, real machine.
I also read those reviews and was almost scared off initially, but took the chance based on the fact that they can’t easily spread mold like humidifiers with wicks. I have not had any issues with parts failing after 2 years of use now. I think maybe a good portion are from people who did not take care of them—the little metal bars that “corrode” in some of the reviews need to be cleaned once a season along with the rest of the unit… But then they look new. The manual also has a guide to replacing parts in the unit and it disassembles fairly easily, so I’m relatively confident that it would be repairable if something did fail. If it makes you feel any more confident, I just ordered a LW15 and LW45 for not an insignificant amount of money based on my experience with the LW25. There’s a 10% off coupon on their site if you sign up for their mailing list, and shipping is free. I just wouldn’t get one with the humidity sensors or WiFi if you want to stick to BIFL (I use smart plugs and sensors).
Venta. My daughter is immunocompromised so I did a ton of research to minimize risks with humidifiers. It’s literally a paddle that slowly agitates a bucket of water and a fan on top. Just top it off with tap water each day, then wipe it out and add a sterilizing liquid to some fresh water every 2 weeks. Plus it’s German, so they have instructions in the guide on how to replace all the parts (making it BIFL).
Venta. They are expensive, but they solve all the problems with humidifiers. It’s literally just a wheel that churns a basin of water below a fan, and it actually cleans the air too. Just add tap water daily. Then wash everything out every 2 weeks and add their sterilizing liquid. My daughter is immunocompromised at times and it’s the only brand I will use in her room.
I also read those reviews and was almost scared off initially, but took the chance based on the fact that they can’t easily spread mold like humidifiers with wicks. I have not had any issues with parts failing after 2 years of use now. I think maybe a good portion are from people who did not take care of them—the little metal bars that “corrode” in some of the reviews need to be cleaned once a season along with the rest of the unit… But then they look new. The manual also has a guide to replacing parts in the unit and it disassembles fairly easily, so I’m relatively confident that it would be repairable if something did fail. If it makes you feel any more confident, I just ordered a LW15 and LW45 for not an insignificant amount of money based on my experience with the LW25. There’s a 10% off coupon on their site if you sign up for their mailing list, and shipping is free. I just wouldn’t get one with the humidity sensors or WiFi if you want to stick to BIFL (I use smart plugs and sensors).
I’ve had the best luck with evaporative humidifiers for big rooms. Ultrasonics are quiet, but most just can’t keep up in a large living room. If you want something that actually moves the needle: AirCare / Essick evaporative models not pretty, but they work. Can handle large spaces, no white dust, and the fan noise is more like steady white noise (no gurgling). Downside: big footprint. Venta LW series (used or on sale) very quiet and dead simple to clean, great overnight. Expensive new, but worth it if noise + maintenance matter more than max output. Levoit LV600S solid if you really want ultrasonic; quiet and convenient, but you’ll refill more often and it may struggle if the room is truly large.
Venta branded humidifiers are great

LEVOIT
Superior 6000S Smart Evaporative Humidifier
Smart, large capacity; cleaning and whole-home coverage polarized.

Vornado
Evap40 Evaporative Humidifier
Durable, low mold risk; frequent wick replacement is a pain.

LEVOIT
LV600S Smart Hybrid Ultrasonic Humidifier
Smart, quiet; hard water causes white dust; cleaning polarized.

Aprilaire
800 Whole-House Steam Humidifier
Superior whole-house steam; high installation and running costs.

Aprilaire
Model 600
Whole-home furnace integration; output tied to furnace run-time.