Question about Aprilaire 550 Humidifier

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I am getting a white scale or powdry dust throughout the house. What is happening?

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You need to replace you humidifier pad. The water scales up on the pad and this is the white powdery substance you are getting.

Posted on Feb 02, 2010

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I want to know best way to clean the humidifier and how often?


It all depends on a couple of factors.

First is the type of humidifier your using. Portable or whole house connected to the furnace. Steam, ultrasonic or filter. Your unit's instructions is the best guide as to how often you need to clean it and this can vary from every day to once a heating season.

My recommendation is to watch and clean the unit as soon as you see scale forming. Then in the future, reduce this to just before you see scale forming.

The second is the type of water you are using. Hard tap water is the worst and usually will require every day for small portable steam or ultrasonic units to once a week for filter models. For central whole house humidifiers, once a month (perhaps as little as every two weeks if your water is really hard, >10 grains hardness). There is no fixed formula for this, the idea is to perform on-going, preventive maintenance.

Soft or conditioned water will contain the same amount of minerals as hard, but the softener has replaced the calcium minerals with sodium minerals. (Sodium bicarbonate actually).The result is the humidifier will still form scale but it much easier to remove. With soft water scale, you can just break up the scale with your fingers and the filters can just be submerged in clean water and the salt scale will re-dissolve.

Third, with distilled water, you may only need to clean any of these units annually. (No minerals to for scale).

With any filter humidifier, consider using a commercial bactericide to prevent the growth of bacteria when the water sits for long periods (>14 days). Not so critical with soft water as the salt will retard the growth of bacteria, but very important with hard or distilled water. Don't use this product in ultrasonic or steam humidifiers as it will be carried into the air along with the water vapor, and can be considered as toxic.

With hard water, use a 50/50 solution of white vinegar and water to dissolve the scale buildup. This works best if done on a regular basis. If left go too long, it become impossible to clean properly. You need only use regular water when using soft or distilled water in your humidifier.

Dec 25, 2015 | Kenmore Cool-Mist Ultrasonic Humidifier...

1 Answer

A white dust is comming from my cool mist humidifier, is is dangerous to breathe?


Its probably just from the minerals in your water. If so you should be fine although it does make a bit of a mess around the house. If the white dust bothers you, fill your Hankscraft 240 with distillers water rather than tap water and the problem will go away.

Mar 07, 2015 | Hankscraft Gerber Model 240 Cool Mist...

1 Answer

White dust in the house


Use mini RO system or good filter to feed humidifier with water that contains less minerals.

Jan 24, 2013 | Honeywell HE360A1027 Whole House...

1 Answer

Scale build up on heating element


Try white vinegar instead. The same type of scale builds up in drip coffee makers. Most recommend white vinegar to remove the scale that builds up over time. The added bonus is it costs less and is completely safe. If your unit is a water over paper media humidifier, you would be much easier to replace the paper media.

Sep 12, 2012 | Honeywell HM509DG115 120V TrueSTEAM...

1 Answer

Lime build up on coil has to be cleaned weekly how do i prevent so much and many times cleaning the coils is their a additive i can add or device to prevent


You could add an inline water supply filter. That would help some, since it appears you have a hard water situation. A 50/50 solution of white vinegar and water will clean the existing lime scale. Adding a whole house water softener is also a good solution.

Hope this helps solve your problem.

Mar 15, 2011 | Honeywell HM509H8908 Humidifier

1 Answer

The date - February 23, 2010 - 6 days ago, I purchased a Sunbeam Humidifier from my local Walmart - Lake Geneva, WI. I really thought I had made a wise purchase - very quite, and was raising the humidity...


Im not going to recomend a humidifier because I need one myself and have not went shopping yet.

I would like to opinionate an explination on the white haze.

The humidifier is putting moisture in the air -water is much much heavier than the air - water is much much heavier than dust particles also.

therefore my theory is that the moisture is combining with the dust or whatever is already in the air and then eventually settling. perhaps if this is correct you may want to do some checking around in your home or furnace ducking or even furnace filter. The dust could even be coming from a little pin hole in your clothes dryer exhaust hose.

Mar 01, 2010 | Sunbeam Ultrasonic Humidifier

1 Answer

High Calcium in Water


Hi, Hot will make the problem worse. If your calcium is that high you will have scale in your tubs, sinks and toilets. Calcium is a pipe clogger and if you have noticed this type of scaling you may be wise to consider a whole house water filtration system, it will save you lots of problems in the long run. Good Luck!

Feb 19, 2009 | Honeywell HE220A1019 Whole House...

1 Answer

Humidifier does not reset


According to Holmes, one of the causes of the Reset light staying on is scale buildup on the heating element.

Remove Scale: Allow to cool before maintenance.
1. Repeat steps 1-5 in the Daily Maintenance section.
2. Clean the base by partially filling the base with one
8-oz cup of undiluted white vinegar. Let solution stand
20 minutes, cleaning all interior surfaces with a soft
brush. Dampen a cloth with undiluted white vinegar
and wipe out entire base to remove scale.
3. Rinse with clean warm water to remove scale and the
white vinegar solution before beginning to disinfect
the tank.
4. Wipe the heating element clean with a soft cloth after
it has had chance to cool.

If the scale has really built up it might take longer than 20 mins for the vinegar to get rid of it and you might need to refresh with new vinegar.

Your Manual can be found at this link:
http://www.holmesproducts.com/Manuals/Holmes/HM5250-UC_English.pdf

Good Luck.

Apr 07, 2008 | Holmes Products HM5250-UC Humidifier

2 Answers

Produces a ton of white dust... Why???


Your V5100N ultrasonic humidifier generates a fine mist by vibrating the water at an exremely high speed. The water doesn't actually evaporate until after the water mist is in the air. As the tiny water droplets evaporate in the air, the calcium and other minerals settle on your floors and furniture.

Humidifiers that evaporate the water in a filter wick, or with heat, do not generate dust because the water evaporates inside the unit and the calcium is trapped inside.

You can avoid the dust problem with your humidifier by using distilled water. Distilled water is available in most stores that sell bottled water in gallons...but be sure to choose "distilled" water, not "purified" water. Try the distilled water in your steam iron also...if you have one. It will last longer.

Feb 29, 2008 | Vicks V5100N Humidifier

1 Answer

White dust


Suggest you try using distilled water in the Humidifier in the baby's room. If your seeing that much dust you must have heavy hard water in your borough, suggest you replace the filter more often & or Demineralization Cartrid if your not already doing so.
Hard water is tough on many things in your home. Washing clothing can produce dark & light spots, some rust in color. Build up of rust & minerals through out the water lines in home. Bad taste. Build up of white stains in glasses & the list goes on.
The best choice would be a filtering system to remove most if not all hard water as it enters your water lines. Many companies near you can help you remove this problem. Listed below is one such company.
http://www.raindancewatersystems.com/maxicure.html

CPSC Issues Alert About Care Of Room Humidifiers
http://www.cpsc.gov/cpscpub/pubs/5046.html

Goog luck & Best Regards.

Thanks for using FixYa
please vote...

Jan 28, 2008 | Vicks Ultrasonic V5100 Humidifier

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