A rated warrant officer with over 22, 23, 24, or 25 years of aviation service, will continue to receive the rate prescribed for officers with over 14 years of aviation service.
1 Open windows when outdoor humidity levels are low. 2  This lets in a fresh breeze that can help even out home humidity levels. 3  Keep the windows closed when the humidity level is higher than the ideal 30 to 45 percent.4  Keep a small weather station on hand to help you track outdoor conditions right where you live. Open windows when outdoor humidity levels are low. 2  This lets in a fresh breeze that can help even out home humidity levels. 3  Keep the windows closed when the humidity level is higher than the ideal 30 to 45 percent.
up vote 3 down vote. Recommended humidity levels for human comfort is 30-60%[1]. Plus, in a basement, you want to keep things dry for the sake of the structure. I'd let it run as much as it needs to run. [1] http://en.wikipedia.org/wiki/Thermal_comfort#Relative_humidity.