I need a tray for hcm 300t. the filter sits in this tray, my tray has a crack and i would like to replace it

Does it have a collection tray , that needs to be emptied first.

Found a hairline crack in the water canister. Had to locate by filling the canister and waiting for a couple of minutes for water droplets to form outside the canister. This ever so slight crack allowed air to enter the chamber and made changes to water dispensing rate which overfilled the resevoir over time ( hours). The cracks were not visible under 10X magnification without the water droplets.

The ability of the humidifier to maintain a given moisture content in the air is far more difficult than a heat or cooling unit to heat or cool the air.

Moisture vapor has far more energy to seek dryer air, than tempered air. So the moisture seeks and finds dryer air quickly, whether it be through stair and door ways, or through cracks and seams in walls and doors/windows, or through non vapor barrier surfaces.

The only way the unit would be able to achieve a humidity level as stated, is for the unit to be placed in a vapor-tite room that has a minimal of leakage.

You could put more humidifiers in the space, or more and larger humidifiers in the space, to try and overcome the vapor moving to other areas of the space. But unless you have a fairly vaportite space, it is unlikely the unit is under capacity, and the only way to test what capacity is needed is to take humidity measurements.

Reply back with any questions you may have.

Thanks for your question,
Sounds to me like you have something partially cloging the misting nozzle, if you can take the nozzle off, and check it I would bet there is something that got in there, if you cant, it might be better to just return the Humidifier where purchased for an exchange, if you can get the nozzle off, if you have a can of compressed air like they sell for dusting off computers, I would use a very short burst of that in the nozzle, and in the feed line, thanks again for your question, let me know how it works out,
mr.grzz

Unplug the unit (safety first), remove the two water jugs at the back lay them down. Find a tray large enough to fit the motor and filter inside of it put it next to the unit. Lift off the motor and set it next to the tray, lift out the filter and set it into the tray (in might be wet, and we wouldn't want a mess). Look for a small plastic tower in the base, inside that tower is supposed to be a float with a screw threaded into the top. If there is no screw, grab a small one that is about 5/8" long and screw it in about 1/4" put the filter and motor on, verify that the motor is sitting evenly on the base. If it isn't, turn the screw colckwise 1 full turn and recheck the motor/base fit. When it looks even, put the motor back on, plug it in and hope for the best!!
Take your time and don't forget that this is not a precision machine, so some 'adjustments' are necessary

This happened to me the second night of use.  Water all over the carpet and a dripping vent. I called customer service and they told me to remove the tank and filter, and run unit dry for an hour or so. Then restart it.  Worked fine after that.  I think we may have bumped it which is said to be the cause of most leaks.  Bummer is that after 5 night of use the grip on water tank slipped and the tank is in pieces.

You are looking for replacement filter HAC-504. (which is the filter for the 500 series)

You can order them from Homedepot.com
http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=10051&productId=100035531&langId=-1&catalogId=10053&ci_sku=100035531&ci_src=14110944&cm_mmc=1hd.com2froogle-_-product_feed-_-D27X-_-100035531

Hope this helps.
Good Luck.

http://www.humidifierfilters.com/parts4models.php?brand=honeywell&model=hcm-300t

You can order a new tank through this link.

Good Luck

well these dont work in winter 1st off if heater is on were u from try to wigle the water buket on it just right so sits in and turns on sum sensor toucjy the way they sit in

Q: My unit has been running for several hours. I hear the fan spinning, but I do not notice the water level in the tank decreasing.
A: First, check the filter to ensure it is wet. If the pad appears dry, remove it from the Base and gently rinse under cool water. Reposition wet filter in the Base. You may also want to note the current moisture level in your home. If the humidity level is over 60% the unit will not put out much moisture
as your air is already saturated.

UV bulb and filter are user replacement items

see manual from my other post
Owners manual LINK
Comment by Soulvisitor, posted on Jan 20, 2008 You should notice moisture on the widows in the room after unit has run for awile, this unit carries a 3 year warranty. More info coming...
Comment by Soulvisitor, posted on Jan 20, 2008 see this
Comment by Soulvisitor, posted on Jan 20, 2008 If water level in tank is dropping and fan runs then I'd say it is working.

OK?
Comment by Soulvisitor, posted on Jan 20, 2008 Q: I hear the fan turning, but I don’t see any mist. Is my humidifier operating properly?
A: Dry air is pulled through the system and a fan disperses invisible, moisture balanced air. There is no
“mist” emitted. When operating normally you will feel only cool air coming from the unit. Monitor the
water level in your Tank/ Base. If you notice a decrease in the Water Tank over 24 hours then the unit
is operating normally.