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The Saugus Union School District’s HVAC Team is currently working on
resetting thermostats district wide, to follow the suggested guidelines of
both the EPA and ASHRAE. Below is a brief summary of what has been
recommended.

Thermal Comfort

A number of variables interact to determine whether people are comfortable
with the temperature and relative humidity of the indoor air. Factors such
as clothing, activity level, age, and physiology of people in schools vary
widely, so the thermal comfort requirements vary for each individual. The
American Society of Heating, Refrigerating, and Air-Conditioning Engineers
(ASHRAE) Standard 55-1992 (summarized in the table below) describes the
temperature and humidity ranges that are comfortable for 80 percent of
people engaged in largely sedentary activities. The ASHRAE standard
assumes quot;normal indoor clothing.quot; Added layers of clothing reduce the rate
of heat loss.


   RECOMMENDED RANGES OF TEMPERATURE AND RELATIVE HUMIDITY
     Relative Humidity        Winter Temperature          Summer Temperature
            30%                  68.5oF - 75.5oF              74.0oF - 80.0oF
            40%                  68.0oF - 75.0oF              73.5oF - 80.0oF
            50%                  68.0oF - 74.5oF              73.0oF - 79.0oF
            60%                  67.5oF - 74.0oF              73.0oF - 78.5oF
   Recommendations apply for persons clothed in typical summer and winter clothing,
   at light, mainly sedentary, activity.

Although our area falls under the 40% humidity criteria, the district has
chosen to set the temperatures on all thermostats at 72.0oF - 76.0oF. By
keeping the temperatures at these settings, we are hoping to provide
comfort to all, as well as help conserve energy.

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Comfortable Temperatures

  • 1. The Saugus Union School District’s HVAC Team is currently working on resetting thermostats district wide, to follow the suggested guidelines of both the EPA and ASHRAE. Below is a brief summary of what has been recommended. Thermal Comfort A number of variables interact to determine whether people are comfortable with the temperature and relative humidity of the indoor air. Factors such as clothing, activity level, age, and physiology of people in schools vary widely, so the thermal comfort requirements vary for each individual. The American Society of Heating, Refrigerating, and Air-Conditioning Engineers (ASHRAE) Standard 55-1992 (summarized in the table below) describes the temperature and humidity ranges that are comfortable for 80 percent of people engaged in largely sedentary activities. The ASHRAE standard assumes quot;normal indoor clothing.quot; Added layers of clothing reduce the rate of heat loss. RECOMMENDED RANGES OF TEMPERATURE AND RELATIVE HUMIDITY Relative Humidity Winter Temperature Summer Temperature 30% 68.5oF - 75.5oF 74.0oF - 80.0oF 40% 68.0oF - 75.0oF 73.5oF - 80.0oF 50% 68.0oF - 74.5oF 73.0oF - 79.0oF 60% 67.5oF - 74.0oF 73.0oF - 78.5oF Recommendations apply for persons clothed in typical summer and winter clothing, at light, mainly sedentary, activity. Although our area falls under the 40% humidity criteria, the district has chosen to set the temperatures on all thermostats at 72.0oF - 76.0oF. By keeping the temperatures at these settings, we are hoping to provide comfort to all, as well as help conserve energy.