Tip #1 - Humidity Ranges for Healthier Indoor Air
Proper Humidity is important for the personal comfort of your employees and clients but also has a direct effect on your building's air quality. This chart shows that the optimum Relative Humidity Range should be between 45% and 55%. Note, however, that in colder weather this range may cause ice to form on indoor windows. If this occurs, you should lower the humidity setting to prevent water damage to windows and walls - damage that could lead to later mold problems.

Recommended Relative Humidity Setting For Cold Weather

Outside Temperature  -10 F
0 F
10 F
20 F
30 F
Recommended Humidity
 20%  25%  30%  35% 35%

Relative Humidity
Humid air retains more heat than dry air, and in the winter not only feels more comfortable to the body but also is easier to breathe. In the summer if your air-conditioning system is too large, the unit will run for shorter periods of time and will not lower the humidity to a proper range. This leaves you feeling cold and clammy in addition to causing problems with the environment, as shown in the chart above.  Proper sizing of your heating and air-conditioning equipment is extremely important to maintain proper humidity levels.

Want to know more about the best ways to handle your maintenance- and energy-management needs? Contact Maintenance Management by email, or call us at 260.483.3123.