Why Is My Humidifier Not Losing Water? Something’s Wrong! 

Well, first, it means that the appliance is not increasing your indoor humidity level. Secondly, it could mean that the humidifier is not working as it should.

In the past, we reviewed the Honeywell HCM 350 Germ Free Cool Mist humidifier, and we saw that it is one of the most reliable humidifiers on the market.

However, like any other appliance, it can fail to work as expected. You can face the problem of Honeywell humidifier not using water.

So, what should you do if you face this problem?

Here are a few fixes to try:

Honeywell humidifier running but not producing mist: common fixes

honeywell humidifier water level not going down

If the humidifier is running just fine, it has water in the tank, and it is not producing mist, that does not mean rushing off to the store to buy a new one. You can try these common fixes first.

1. Check the humidifier filters

No matter how clean the municipal claims our water is, there is always a certain amount of mineral deposits in tap water.

Since all water goes through the humidifier filters, these minerals eventually clog up the filters. One of the problems you can expect from clogged filters is that the humidifier water level is not going down.

You can start by cleaning the humidifier filters. However, if you have hard water at home, it is best to replace them.

In this case, you need to know how often to change Honeywell humidifier filters. On the Honeywell Store website, they say that you should change their humidifier filters every 30 to 60 days for high efficiency.

However, for a place with hard water, you might have to make the replacement in as little as three weeks.

Replacing the filters should probably fix the problem of the Honeywell humidifier not working.

2. Check whether the humidity level is set right

honeywell humidifier water level not going down

If you set the humidity level too low, say at about 30 or 35%, you will not notice the water level in the humidifier going down.

The reason for this is that even in some of the driest cities in America or Canada (in winter, mostly), the lowest humidity levels might not get to 40%.

Remember, you are cooking with plenty of steam, and you are using the bathroom and laundry room. Therefore, you need to set the indoor humidity level to the recommended 50%.

3. The humidifier is clogged

This is a very common problem, especially for people who use tap water in a humidifier. The minerals in the water form scale on the tank walls.

The minerals may also block the nozzle, and in turn, the unit will not release mist. Therefore, the water in the tank will simply not drop because it is not being used up.

Luckily, unclogging the tank is not hard at all. You just need to fill the tank with half-water half-vinegar solution and let it sit for about 30 minutes. Swish the solution around the tank so that it can get to all parts of the tank.

This is going to break down the molecules of the scale and leave the humidifier clean and unclogged.


Honeywell humidifier water level not going down is a real problem. It could happen to any humidifier.

If the humidifier is running and your children complain of dry noses and throats, your Honeywell humidifier is not using water.

You need to check out a few things that we have pointed out here. If you have a warm mist humidifier, the elements must heat up so that it can start misting.

If it is a cool mist humidifier, it should start misting soon after you turn it on.