Honeywell Easy to Care Cool Mist Humidifier, HCM-750 Review

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Last fall I purchased a Honeywell HCM750 cool vapor humidifier, made by Kaz. Initially it worked fine but, following its instructions, after a couple of weeks I cleaned it. When I put it back together, it would not run and had to phone Kaz customer service. I am quite handy with these gadgets and followed their instructions but could not get it to work; it appears the core of the humidifier is a magnetic rotor that makes the fan turn and it just would not work.

Finally I sent the unit back for repair/replacement, and since it was winter and wanted to keep the humidity in my house at an appropriate level, I purchased a second unit, which I figured later on to use in the bedrooms area. It was around Christmas time, but it took three weeks to get the repaired unit back. Once back it worked fine, and I kept both units going. When both were working, my electronic temperature and humidity control was measuring between 25 and 30%, which I consider on the low end of humidity during the winter months, with gas hot-forced-air heating, and I kept the units runnning 24-7, except when adding water to the tanks.

A few weeks later it was time to clean both units and lo and behold, one of them would not run and had to play with the magnetic rotor for maybe one hour or so until it would start running properly. Put both units back to work, and the next day, one of them is sitting in a 12-inch poodle of water. Could not figure out what was the problem; took it apart, put it back together, and then again problem with the magnetic rotor. Finally got it to work only at medium speed (it has a 3-speed dial).

By this time I was quite disappointed and decided to take both units and donate them to a non-profit organization, while looking to buy another brand for next winter. Sorry I bought it. I will do better next time.

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We should have researched before purchasing this humidifier. It worked fine for a couple nights, then randomly stopped working. We played around with the assembly of the tubing and got it to work, only to have it break down again a few nights later. We ultimately returned the unit, assuming it was defective, only to get a brand new one that also stops working on a regular basis.

In short, I would NOT recommend this humidifier to anyone who wants a reliable unit that you know, actually functions. If you want to tinker with it for hours on end, then this is for you.

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After using this product for about 6 months, and letting it run dry a time or two, I found that, as others have noted, the pump would lock up (with a loud "clack") and the water would stop flowing. I disassembled the pump and tried various fixes involving washers, but my thinnest washer was still too thick to let the impeller spin.

I then had the idea of lubricating the impeller and the inside of the pump. I didn't have any silicone spray, but I did have a candle I used for fragrance. Smearing a fingertip with the oily wax, I wiped the wax all over the impeller, the removeable cap, and the inside of the pump, and reassembled the pump. Voila! No more locking up. This worked until I accidentally let the pump run dry again; after relubricating it it's working fine again.

This is an easy fix for the only problem I've found in what is otherwise a great product. I particularly like the fact that filling the humidifier with water is very easy and requires no disassembly; you can just pour it into the large openings even while the unit is running. Also, the wicking is clearly visible at the top of the unit so that you can tell that all's well with it.

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This humidifier worked fine for a few weeks, then the pump failed. I called up customer service and they sent a new pump. It ran another month and now this pump is failing. It's a poor design, the bushing on the pump rotor wears out and the pump rotor jams. I'm replacing the pump with a small table-top fountain pump. These last much longer under continuous use.

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We bought one of these near the end of November and were initially happy with it. I read some of the other reviews out here; we didn't have any issues with the motor, and didn't find it particularly noisy. It worked well for about two months. I took it apart and put the washable pieces through the dishwasher on a few occasions. The humidity in the house was finally hovering around 35-40%. No problems so far.

The other day, I decided to relocate it. I picked it up and there was a huge wet spot on the carpet where it had been sitting. No good. I cleaned it again, and set it on a plastic lid from a storage container. Sure enough, the next day it was sitting in a puddle of water.

I called Honeywell product support, they said it was defective and wanted me to ship it back to them at my expense. I told them I didn't have the box anymore and it would be cheaper for me to just toss it and buy a new one. Mwa waaa.

Pros: works well, not particularly noisy, kicks out plenty of moisture (as long as you fill it once a day).

Cons: leaks like crazy although there are no apparent cracks in the water containing portion of the unit. Maybe it isn't a leak, I suppose the warm motor could attract some condensation but I doubt it.

We threw it out. Buy something else.