How to control humidity in your crawlspace using our unique dehumidifier designed specifically for your crawl space.

Relative humidity level is set using the dial on the front of the dehumidifier.  The dial allows you to choose settings from 1 to 5 as well as "OFF" and "CONT", which stands for continuous.  Choosing off, obviously turns the unit off.  Cont or Continuous turns the unit on and leaves it running constantly.  Choosing a number sets the unit to cycle on and off, maintaining an approximate range of humidity. 

For example, let’s say you wish to keep your relative humidity at 50%.  The closest setting on the table above is 3, which equates to 48% relative humidity.  Remember, these numbers are approximate, not exact, and here’s why…

The dehumidifier’s internal humidistat measures the relative humidity.  If the RH is above 48%, the compressor and fan will turn on.  After the machine runs for a while and the humidity drops a few points below 48%, say about 45%, the unit will turn off.  Even though the unit is turned on, it will not run again unless the RH level rises above 48%.  The humidistat will monitor the RH and kick the unit back on when the RH hits a few points above 48%, about 51%.  In this manner, the dehumidifier targets and maintains your desired relative humidity within a few percentage points above and below.

This way of controlling levels is a universally used technology.  This is the same way all other dehumidifiers work, as well as the way your home’s thermostat controls your furnace & AC, as well as the way your oven maintains its desired cooking temperature.