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

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.

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.

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

First off, you should not have lime buildup if you used distilled water and NOT TAP Water. If some build up occurs, cleaning should be done using VINEGAR solution. Check the float valve and gaskets. Replace any filters. Clean nozzles or exit ports where mist is spewing from.
These units are low cost devices and repairing them is not economical.

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

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:)

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
Tinner
Sunsetmech

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.

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.

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.