What Does Red Light Mean On Homedics Humidifier?

Humidifiers are an essential part of the home. They’re responsible for adding moisture to the air in your house or office. You can breathe easier and have a better night’s sleep during winter.

Humidifier provide many benefits for your health; it helps with asthma and allergies as well as dry skin.

 Not only that, but the humidity of the air will reduce static shocks and dust mites disappearing entirely within a few days which is impressive!

Humidifiers disperse mist into the air through an oscillating fan which helps spread across a larger area without causing any damage or wetting surfaces around your house. However, there are various types of humidifiers, and the Homedics humidifier is a common one! 

The Homedics ultrasonic humidifier uses ultrasonic technology to produce excellent, moist air that is soothing and refreshing. The Homedics warm or cool mist humidifier has an automatic shut-off for safety, which can be helpful if you have pets who may knock it over by accident. When the humidifier’s switch is on, there are several lights, and one of these lights is a red light.

Homedics Humidifier Red Light 

The red light on a Homedics humidifier indicates that the water tank is empty. You will need to refill the humidifier before using it again, or it won’t work.

You can fill up the water tank by unscrewing the cap and filling it with cool tap water. Be careful not to overfill it; if you do, there may be an overflow when you put it back into place.

This is an in-safety measure designed in the Homedics humidifiers to prevent overheating. It is not faulty, so do not worry. It simply means that the water tank needs refilling and you should take care of it as soon as possible!

Some of the Reasons that Cause Red Light on Homedics Humidifier

Apart from the low water level in the humidifier, there are other reasons why the red light may come on. These include:

  • The fan is not working well enough to produce mist
  • When the knob is not turned to off position during refilling
  • Check for possible lime deposits on the water level sensor or the nebulizer
  • Make sure that nothing blocks the vapor output slots.
  • The atomizer is dirty.
  • The float is missing or stuck to the bottom of the base
  • The unit turned on too quickly
  • Too much moisture or humidity in the circuit board
  • Unit reset needed

What are the Causes and Solutions to Each Problem?

No Water in the Humidifier Tank

When the humidifier is in use, it uses a sensor to detect the level of water in the tank. When the humidifier tank’s water levels drop or run empty, the red light is activated, and no mist is sprayed into your room.

The humidifier will not work without any water in its reservoir. The best way to deal with this is to fill up your Homedics humidifier water tank. To refill, turn off the humidifier, unplug the device from the wall, and open the water tank to add cool tap water. 

Be sure not to overfill it. Place the water tank back on its base and make sure that you screw in tightly before turning it on again. 

The Fan is Not Working Well Enough to Produce Mist

If the humidifier fan is not working correctly, it may be due to a clogged air passage. When you do not clean your humidifier frequently or the filter becomes dirty over time, the fan may stop working. A malfunctioning fan should be checked and fixed as soon as possible to prevent damage. Moreover you can employ a humidifier without filter to avoid constant cleaning of the filters.

Turn off the Homedics humidifier and unplug it from the wall outlet to check if it is working correctly. Open up your device’s water tank cover and use a flashlight to look inside at fan blades. If the blades are clean and turn freely, then your fan is working fine.

If not, you will need to clean out any dirt or debris that might be clogging up the air passageway. When this happens, use a brush and warm water with gentle soap mixed in it. Be sure to rinse off all of the soap and dry the unit before using it again. 

The Knob is Not Turned to Off Position During Refilling

Turning the knob on your humidifier to the “off” position when refilling it with water is vital. Turning off will prevent any electrical damage if there is an unexpected power surge or spike, which can happen even at low wattage.

If this happens and you notice one of these warning signs, immediately turn off the unit and unplug it from the wall outlet. Please wait for a few minutes before turning it back on again. Make sure that the knob is in the proper position before doing so, and you should be fine.

Check for Possible Lime Deposits on the Water Level Sensor or Nebulizer

Limescale buildup could cause problems with sensors and other internal components of your humidifier, which may lead to electrical issues. It can happen if you use your humidifier frequently without cleaning it properly.

To prevent this problem, clean your Homedics humidifier regularly to remove any limescale buildup that might occur over time. Since the water in the tank is always heated up and becomes very hot, mineral deposits are likely to build up faster than usual. If you notice any problems with mist output or red light, then clean it immediately.

Make Sure That Nothing Blocks the Vapor Output slots

When you notice water droplets coming out from anywhere other than the humidifier’s nebulizer, this indicates that something is blocking your unit’s discharge openings. If not removed in time, this can cause damage to the internal components of your unit and lead to further problems.

To prevent this issue, always make sure that nothing is blocking the nebulizer openings when in use. It would be best to move foreign objects like clothing, dried flowers or plants, paper tissue pieces, etc.

The Atomizer is Dirty

If the atomizer is blocked, you will notice that your Homedics humidifier emits a gurgling sound. It means particles of dirt or other debris inside it, and they do not let water pass through freely.

The best way to deal with this problem is by first turning it off, unplugging your device from the wall outlet, and removing the water tank.

Once you have done that, clean out any dirt or debris with a brush and warm soapy water. Be sure to rinse it off well before putting back together again.

The Floater is Missing or Stuck to the Bottom of the Base.

It is crucial to ensure that the floater inside the water tank remains free of dirt, debris, or any particles so it can float up and down freely. Failure to do this could result in improper humidity levels being released by your Homedics humidifier.

To clean off anything blocking its movement or prevent future problems from occurring, remove your device’s water tank and clean it.

Since the floater is located at the bottom of your humidifier’s water tank, this should be simple to do by just rinsing off any dirt or debris with warm soapy water using a soft brush.

Once you are done, let all components dry completely before putting them back together again.

The Unit Turned on Too Quickly.

If the unit is turned on too quickly, this could cause an overload, leading to overheating and potential damage. 

If this happens, turn off your Homedics humidifier immediately by unplugging it from the wall outlet and wait for a few minutes before switching it back on again. Allowing sometime before switching on will prevent any further problems from occurring.

Too Much Moisture or Humidity in the Circuit Board Area

If the humidity in your room is too high, it can cause electrical components like circuit boards to malfunction or stop working altogether.

This problem usually occurs when you use a lot of water in short periods. Accidental spillage of water on the circuit board area can also cause this problem.

To prevent any potential damage, make sure to use your device with utmost care and avoid using it in excessively humid conditions. If you notice a red light or other warning signs, then consider moving your unit to a different room with dryer air for a while before turning it on. 

If you don’t have a drier, you can turn your unit off for a few hours to let the moisture evaporate naturally.

How to Reset Homedics Humidifier

If your unit has problems, you can try reset by unplugging it from the wall outlet for about 15 minutes.

Resetting the Homedics humidifier will give the internal components of your device time to cool down and revert to their normal state. Once that is done, plug in your Homedics humidifier again and see if it has returned to working order.


If you follow the instructions listed in this blog post, most problems with your Homedics humidifier should be solved and prevented from happening again.

Such problems include issues like overheating, not producing any mist at all or emitting an unpleasant odor when in use.