Homedics Humidifiers – Cleaning, Manuals, Red Light, Etc

Last Updated on: 4th November 2023, 12:40 pm

If you’re reading this, you’ve either just unboxed your new Homedics Humidifier, or you’re looking to get the most out of your trusty old one. Either way, you’re in the right place.

I’ve spent years working with and understanding humidifiers, and I can’t stress enough the importance of proper maintenance and troubleshooting. It’s not just about keeping the air in your space comfortable; it’s about ensuring the longevity of your device.

Think of your humidifier as a pet; the more love and care you give it, the longer it will faithfully serve you. Dive into this guide, and let’s ensure you get the best experience from your Homedics Humidifier.

If you are thinking about buying one, take a look at our HoMedics humidifier buyer’s guide here.

Table of Contents

How To Set Up Your Homedics Humidifier

Setting up and operating your Homedics Humidifier isn’t rocket science, but there are a few things you’ll want to keep in mind to get it humming just right.

  1. Location, Location, Location: Find a flat, stable spot away from direct sunlight and electronics. Remember, no one likes a wet laptop.
  2. Fill ‘er Up: Lift the water tank, twist off the cap, and fill it with cool tap or distilled water. Avoid using hot water; this isn’t a tea kettle!
  3. Set It: Place the water tank back on the base, ensuring it fits snugly. Turn the dial or press the power button to your desired setting.
  4. Breathe Easy: Give it a minute, and you’ll start to feel the difference. Ahh, that’s the good stuff.

Best practices for optimal performance:

  1. Water Quality: If your tap water is hard or has a lot of minerals, consider using distilled or filtered water. It’ll keep your humidifier cleaner and running smoother.
  2. Keep It Clean: Don’t let water sit in the tank for days. Refresh it every day to keep things fresh and mold-free.
  3. Positioning: Aim to place your humidifier at least a few feet off the ground. A shelf or table is perfect. This ensures better mist distribution.
  4. Not Too Humid: While it’s tempting to crank it up, especially during dry months, aim for a humidity level between 40-60%. Overhumidifying can lead to mold growth and other issues.

Now that you’ve got the basics down, you’re all set to enjoy the full benefits of your humidifier. Remember, it’s not just about adding moisture but doing it right!

How To Use A HoMedics Humidifier

Operation And Best Settings

Before we get into the best settings, I will review the controls for you. Take a look at the image below. From top left to bottom right:

  1. Power button.
  2. Mist setting allows you to select one of three options for the amount of mist discharged.
  3. Night light – light on the bottom can be turned on if needed.
  4. Humidity setting – pressing this allows you to adjust the humidity percentage.
  5. Timer – allows you to set a timer.
  6. Red indicator light reset button.

Maintenance And Cleaning

Now that we’ve got your Homedics Humidifier up and running let’s talk about keeping it in tip-top shape. Think of this as giving your device a spa day. It’s been working hard for you, and a little pampering goes a long way.

Regular cleaning and maintenance not only ensure that you’re breathing the cleanest air but also that your humidifier lives a long, happy life. So, roll up those sleeves, and let’s dive into the nitty-gritty of keeping your device fresh and efficient!

Signs That Your Humidifier Needs Maintenance

  • Decreased mist output: If you notice a reduced amount of mist being emitted from your humidifier, it could be due to mineral buildup or dirt obstructing the proper function of the device.
  • Unusual odor: A musty or moldy smell coming from the humidifier is often an indication of mold, mildew, or bacterial growth, signaling the need for cleaning.
  • Visible mold or algae: If you spot mold, algae, or any other growth inside the water tank, reservoir, or on the filter, it’s time for a thorough cleaning.
  • White dust accumulation: A buildup of white dust around the humidifier or in the room may indicate that minerals from the water are being dispersed into the air, suggesting the need for filter replacement or cleaning.
  • Cleaning indicator light: Many humidifiers have a cleaning indicator light that turns on after a specific number of operating hours, notifying you when it’s time for a cleaning.
  • Unusual sounds: If you hear strange noises coming from your humidifier, such as gurgling, buzzing, or clicking, it could be an indication that the device needs cleaning or maintenance.

How To Clean HoMedics Humidifier (An Easy Guide!)

To perform the steps below for cleaning, you only need a few things:

YouTube video

While there’s a general cleaning routine that works for most humidifiers, it’s always a good idea to give your specific model’s manual a once-over. It’ll have all the insider details to keep your humidifier loved and well cared for!

How Often Should You Order, Purchase, And Replace The Demineralization Cartridge?

deminerialization cartridge

According to HoMedics, you should replace these every 30-40 fillings. That should be enough to keep everything good and clean.

You can get a reasonably cheap 4-pack of replacement cartridges on Amazon here. And if you want to save money in the long run, you can also get a 12-pack or 20-pack.

Does A Homedics Humidifier Need Filters?

Currently, all models of HoMedics humidifiers are ultrasonic. Ultrasonic humidifiers work differently than other types of humidifiers. Instead of heating water to create steam or using a wick to draw water into the air, ultrasonic humidifiers use high-frequency vibrations to break up water into tiny droplets dispersed as a cool mist.

Because ultrasonic humidifiers don’t use heat or a wick, they don’t create the same kind of mineral buildup or impurities that can clog up other types of humidifiers. That means that, in general, ultrasonic humidifiers don’t necessarily need filters to be replaced. However, some models come with filters as an optional accessory or as part of a built-in filtration system from dust and dirt.

Now, that’s not to say that ultrasonic humidifiers are perfect. Depending on the quality of your water, you may still experience some mineral buildup or impurities over time. But overall, ultrasonic humidifiers are a great option if you’re looking for a low-maintenance, easy-to-use humidifier that doesn’t require a lot of extra fuss or bother.

Homedics Humidifier Red Light (Most Common But Easy Issue)

To turn off that red light indicator, you only need to press and hold the button for 3 seconds. 

It’s important to note that turning off that red light doesn’t fix any underlying issues with your humidifier. If the red light keeps coming back on, you need to look closer at your humidifier and see what needs fixing.

The water level may be low, or the humidifier needs to be cleaned. Or there’s some other issue that needs to be addressed. Whatever the case, remember that turning off that red light is only the first step. You must monitor your humidifier and ensure everything is running smoothly like silk.

But hey, if that red light is getting on your nerves, press and hold that button for 3 seconds, and you’ll be back to enjoying that sweet, sweet humidity in no time.

Humidifier Maintenance Tips To Prevent These Problems

Regular maintenance is vital to keeping your HoMedics humidifier functioning correctly and avoiding issues down the road. Here are some tips to help you maintain your machine:

  1. Clean the machine regularly: It’s important to clean your humidifier regularly to prevent mold and bacteria growth. Water and white vinegar can clean the machine and its components. Follow the manufacturer’s instructions for cleaning and disinfecting your specific model.
  2. Change the water: To prevent mold and bacteria growth, changing the water in your humidifier when it tells you to is essential.
  3. Store the machine properly: When you’re not using your humidifier, it’s important to store it properly to prevent mold and bacteria growth. Be sure to empty the machine of all water and let it air dry completely before storing it. Store the machine in a cool, dry location.
  4. Check for leaks: Regularly check your humidifier for leaks or other issues. If you notice any leaks or other problems, address them as soon as possible to prevent further damage to the machine.

Following these maintenance tips can help prevent issues with your HoMedics humidifier and enjoy clean, healthy air in your home. Remember to refer to the manufacturer’s instructions and guidelines for your specific model for the best results.

Check out our troubleshooting guide of the HoMedics humidifier here.

How Do I Reset My HoMedics Humidifier?

Resetting the humidifier is simple. All you need to do is press and hold down the red light indicator (or cleaning light) button for at least 3 seconds. You can also unplug it for a few seconds and plug it back in.

These reset HoMedics humidifier instructions should be all you need.

Replacement Parts

Here’s a table of replacement parts for HoMedics humidifiers:

Replacement PartDescription
Replacement TanksEssential for holding water that gets turned into mist; replace if dirty or cracked​.
TransducerVibrates to create mist; replace if worn out or damaged.
DiffuserSpreads mist around; replace if clogged or broken.
Replacement WicksSoak up water to create mist; replace if gunked up.
Replacement CapEnsures humidifier is sealed up tight; replace if broken or missing.
Tablets (Demineralization Cartridge)Added to the tank with the water to prevent mineral buildup​.

You may need to check your humidifier’s user manual or contact the manufacturer to ensure you get the correct replacement parts for your specific model.

User Manual Downloads

HumidifierManual Link
TotalComfort Deluxe Warm & Cool Mist Ultrasonic HumidifierDownload Manual
TotalComfort Ultrasonic with UV-C TechnologyDownload Manual
TotalComfort Deluxe Ultrasonic HumidifierDownload Manual
TotalComfort Deluxe Large Room Ultrasonic HumidifierDownload Manual
TotalComfort Plus Ultrasonic HumidifierDownload Manual
Homedics Ultrasonic HumidifierComing Soon
TotalComfort UV-C Ultrasonic HumidifierDownload Manual
Homedics Medium Ultrasonic (CMTF14) HumidifierComing Soon
TotalComfort Cool Mist Ultrasonic HumidifierDownload Manual
TotalComfort Ultrasonic Medium Room HumidifierDownload Manual


What does co mean on a Homedics humidifier?

The “CO” on a HoMedics humidifier likely refers to “Continuous Operation.” On many humidifiers, setting the device to “CO” allows it to run until the water tank is empty without a set time limit. It is always best to consult the specific model’s user manual for the exact meaning of display messages and operational settings, as they vary between models.

If you have the manual, it should define “CO” and instructions on how to use that setting. If you don’t have the manual, you might be able to find it online by searching for the model number of your humidifier.


Now that you’ve delved into the nitty-gritty of setting up, using, and maintaining your Homedics Humidifier, you’re ready to enjoy a comfortable and moist atmosphere. Remember, a little effort in regular maintenance goes a long way in ensuring your humidifier’s longevity and optimal performance. So, keep your humidifier happy, and it will continue to add that much-needed moisture to keep your space comfy. Happy humidifying!