Cleaning Your Humidifier Now: What You Should do

Winter and its dryness from your heating system can affect your health and everything in your house. Hair can be unmanageable and full of static, hands become dry and cracked, nasal passages become dry and bleed, and wood furniture cracks and dries out. With a humidifier, you can put moisture into your home to rid yourself of these conditions and add moisture to your health.

You’ve been running your humidifier for some time now and it needs to be cleaned. This is a must-do for keeping your humidifier in top-notch condition so that microbes and bacteria contamination does not occur.

Three Types of Whole-House Humidifiers

Each has a specific way to clean and the manufacturer’s directions or Owner’s Manual is the best place to start. A whole-house humidifier mounted on your furnace or air handler adds water vapor to your house. The standalone (portable and tabletop) humidifiers are used infrequently in one room and moved from the destination for a place as needed.

  • Drum (reservoir type)
  • Flow-through (drip type)
  • Steam type

The drum humidifiers with a tank (reservoir) for holding water use a drum that rotates with a pad of foam, or similar, that sucks up water from afloat in the water tank to evaporate the water for putting into the air. This unit requires more maintenance.

The flow-through drip humidifier includes a coated metal or plastic screen which has water constantly dripping across the surface of the screen when the furnace runs putting humidity into the air. This unit requires more maintenance.

Being the most expensive, the steam units contain heaters to make steam requiring the least amount of maintenance. It attaches to the furnace, requires water to operate, and is the most efficient. This unit might need a filtration system depending on the water hardness.

Maintenance Recommendations

Drum —the foam pad will harden from hard water minerals and sediment from the tap or well water losing its capability to absorb and be effective. The water reservoir can become stagnant, and turn into a breeding place for pathogens, and mold causing illness. The foam pad (or similar) must be cleaned each month and replaced each year.

Flow-through —uses a coated metal or plastic evaporator pad to put moisture into the air. These units are controlled with a humidistat. They stay cleaner better than the drum type not being as disposed to bacteria and mold growth. They are very reliable and efficient. Consult your Owner’s Manual for routine maintenance.

Steam —has a self-generating steam heater. The tank must be cleaned every 5 months, but always check your specific humidifier brand for instructions in the User’s Manual. The mineral deposits must certainly be removed that are in the tank. It is easy to empty and eliminate the water and then clean out the inside of the tank. With hard water, you might need to do it more often. Some models have a ‘Cleaning Required’ light to let you know it’s cleaning time.

Cleaning Your Humidifier Now: What You Should do - Essential Oil's Tales

Check for Leaks

If your humidifier is leaking on the floor, be sure to turn the water supply line off. Determine what is causing the leak and do the repair. Water bills can move up substantially with leaks.

Stand-Alone Humidifiers

Portable and tabletop humidifiers are necessary during winter. These easy-to-move units are great for a student living in the dorm and for apartment and home renters who have no need to buy a whole-house humidifier.   Most portable humidifiers are inexpensive from about $20 upwards to $100.

Features and Performance

Purchase a humidifier that is simple to fill, easy to carry, and easy to replace its filter or wick. Remember that humidifier maintenance is important. The smaller humidifiers, sometimes called vaporizers, can only work effectively in one room or even a few small rooms at best.

Clean for Health

You should have no worries about health problems when you follow your manufacturer’s instructions that came with the User’s Manual. You want to dump leftover water after each use. Clean and disinfect the water tank after each use. This lets you and your child and family rest assured they are perhaps not breathing in contaminated water mist full of germs and bacteria, or fungus.

What to Use and How to Clean


To truly have the right humidity level in your room, the mist has to first come out. It cannot vaporize precisely if the unit is full of gunk—minerals from hard water. You will need to maintain it frequently; it is easy and takes very little time. You want to remove any hard water scale (mineral deposits) and also have no organisms growing in the water. Manufacturer’s generally state hard water is okay to use. It is not. Distilled water is the best to make use of so there will be no mineral deposits inside the tank.

Water Tank Cleaning

  1. Turn the power switch off. Unplug the humidifier from the outlet so that there is no potential for a shock.
  2. Carefully take away the water tank and dump it out the water.
  3. Add one tablespoon of bleach to the water tank and fill up with cool tap water. You certainly do not need distilled water for this task because it will be dumped.   You can even use clear distilled vinegar. Use one-quarter of a cup of vinegar to the tank no matter what size and fill it with water.
  4. Put the cap straight back on the water tank and tighten it. Turn the tank upside down several times to mix the bleach or vinegar and water. Allow this mixture to stand for 10-20 minutes.
  5. Dump the solution out and rinse the tank several times with cool water until you can’t smell the bleach or vinegar. Wipe the outside clean as well as the unit itself. Dry with a soft towel.

Cleaning the Filter Cover and Base

Check your User’s Manual to determine if the filter(s) are washable. If not, replace it with the spare filters you have on hand—you do, right? If the filter is washable, wash or clean it as the instructions state.

Take away the filter and clean the outside filter cover with a damp cloth or the bleach/vinegar solution if needed. Do not get any water into the motor unit or wiring. Wipe away any dust from the within.

Use a mix of half tap water and half distilled clear vinegar and place in the base. Allow it to soak for 5 minutes roughly and clean with a brush or soft cloth.

Rinse with cool tap water until the vinegar smell is gone.

Put the unit back together making sure it’s thoroughly dry. Plug back into the outlet and you are ready to put it to use again.

Caution: Do not submerge the motor part in water. Do not mix bleach with ammonia to clean because these chemicals produce dangerous vapors that are harmful to breathe in.

Cleaning your humidifier is really a breeze. With proper maintenance, it’ll last for years.

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