Question about Honeywell HM509H8908 Humidifier

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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

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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.

Posted on Mar 15, 2011


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Related Questions:

1 Answer

Lime scale build up and slime in bottom of filter tray

If your water is suddenly evaporating into limescale, your local water company may have switched to a different water source, or your water softener device is out of salt. The limescale can be easily cleaned with vinegar and a sponge, but this will keep occuring unless you use water that doesn't contain disolved calcium. Try getting an RO water filter and use that water.

Feb 16, 2014 | Aprilaire 550 Humidifier

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...

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When I first got the product, it worked great. Now there's hardly any steam coming out.

what is your water quality like. Anyway, unplug, and remove the screws from the underside of heating element. Pull unit apart and clean the heating coils, gonna have to scrap them with a utility knife. If you have hard water, deposits will build up on them , check them once a week if useing often

Mar 24, 2011 | Vicks V150SG 1 Gallon Humidifier

1 Answer

My vaporizer is running however there is no steam coming from the machine. Ran all night and used no water does it need cleaned or should i just replace it. thank you

Well, let's consider what we have:

How old is the vaporizer?-- Could the heating coil be all limed up?
Lime-Away, or Vinegar might help clear the Calcium and mineral build up on the heating element-
Or there might be a bad connection?-- Do you have any lights lit?

Open it up, and tell us what you find-

Mack B

Jan 20, 2011 | Vicks Warm Steam Vaporizer 1.5 Gallon...

1 Answer

EE-3191--This is a frog humidifer that i got from toys r us, there is lime (white crust)build up where the water goes how do i clean the inside of it ?

There is a product called CLR (calcium, lime, rust) that will do the job well. It is available at almost all hardware and grocery stores. Be sure to rinse the reservoir well before use. If you use distilled water, you will not get the build up. Hope this helps:)

Feb 07, 2010 | Crane Frog EE-3191 1 Gallon Humidifier

1 Answer

Alot of water is building up in the drain hose and drain pump is not working

clean the pump tank out you may have lime building up in there stopping the unit from pumping or the float switch is stuck

Best regards

Dec 13, 2009 | Aprilaire 550 Humidifier

1 Answer

Build up or busted?

more and likely it is calcium build up on the unit. especially if your using tap water. even if you cleaned it before putting it away for the season the build up can happen. if it's on the heating coil you need to get like a toothbrush and some vinegar water and lightly scrub the coils. now as far as the tank. let the tank soak in vinegar and water for about a half hour and then wash thoroughly. the portions is one cap full of vinegar per gallon of water.

Aug 20, 2009 | Vicks V5100N Humidifier

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Dehumidifier - hot compressor / coils not cold

If the compressor's running and it's getting hot and the coil isn't getting cold, then you are probably low on refrigerant or your txv or metering device isn't working.

Jul 30, 2009 | Whirlpool AD50USR 50 Pint Per Day Ultra...

1 Answer

No vapor

you need to take a soft toothbrush and some cleaning solution to clean the coils. if the coils are too build up of scale it can reduce the mist or not produce any at all. if that doesn't work there is something internal that is going on and i would check with the manufacturer if your under warranty to get a new one.

Apr 07, 2009 | Duracraft DWM-250 2.5 Gallon Humidifier

2 Answers


I also need some information on cleaning, specifically the base. Not sure if I should use soap or if that will affect the nebulizer?
For cleaning the reservoir, just add a capfull of bleach to some water, and swish it around intermittently for about 20 minutes -- rinse until you don't smell bleach anymore.

Feb 22, 2008 | Crane Cow Humidifier

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