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Project Location: Area Design:
In the IAQ formula this is value Vo, 100% in this box enter the CFM of outside air per Table 2 required to maintain proper indoor air quality if the air meets EPA requirments. Some common ventilation requirements are noted to the side of the input box. Outside air requirement (per ASHRAE 62-1999 Table 2): Auditorium - 15 CFM per person
Conference Room - 20 CFM per person
Office Space - 20 CFM per person
Retail Store - 20 CFM per person
Restaurant/Dining - 15 CFM per person
Hospital Patient - 25 CFM per person
Operating Suite - 30 CFM per person
Bars/Lounges - 30 CFM per person
Casino - 30 CFM per person
In the IAQ formula this is value Vo, reduced in this box enter the value that you would like to reduce the outside air to. Do not enter a value less than 5 CFM per person. Reduced outside air (incorporating air filtration):  
In the IAQ formula this is value EV. Select a value consitent with the design of the air delivery system, connsistent with floor and furniture layout (items that may restrict circulation). Ventilation effectiveness (percent of mixing):  % Recommended EV Values in put as a percentage:

EV = 1.0 or 100%

100% mixing to the occupied breathing zone, (IE: high supply - low returns, supply registered selected for proper throw with system velocities capable of supplying air to the occupied breathing zone)

EV = 0.80 or 80%

80% mixing to the occupied breathing zone, (IE: high supply - low returns, standard supply registers, standard system velocities) Minimum VAV system buffer

EV = 0.65 or 65%

65% mixing to the occupied breathing zone, (IE: high supply - high returns, standard supply registers, standard system velocities) VAV system buffer

EV = 0.50 or 50%

50% mixing to the occupied breathing zone, (IE: high supply - high returns, standard supply registers, standard system velocities, obstructions to airflows at the breathing zone ) VAV system buffer) This level should be considered only if a building retrofit and there is no other method to correct the low level of circulation. It should not be considered for new systems.
In the IAQ formula this is value VS , in this box enter a whole number value consistent with the air delivered to the space in the format of total CFM per person. This value would normally be obtained by taking the total supply air to the condition space and dividing that number by the total number of people in that space. Total supply ventilation per person:
  Required filter efficiency: Increase Total Ventilation or Improve Ventilation Effectiveness