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Requirements
Maintain the ventilation system equipment and associated components based on Table 8.2 of ASHRAE 62.1-2016. Include information on ventilation system operation and preventative maintenance in the current facilities requirements and operations and maintenance plan required for compliance with EA prerequisite Energy Efficiency Best Management Practices.
For spaces with mechanical exhaust, test and confirm proper operation of the exhaust systems as outlined in the current facilities requirements and operations and maintenance plan.
Ventilate the project spaces mechanically or naturally as follows:
For mechanically ventilated spaces, measure the total quantity of outdoor air delivered and verify the results are within 10 percent of the rates outlined in the current facilities requirements and operations and maintenance plan. Measurements shall quantify the amount of outdoor air for each air handling unit serving the project. Measurements taken within five years prior to project submission are acceptable. The rates must meet the following minimum requirements for each air handling unit:
In I-P units:
Minimum outdoor air rate in cfm = 0.06 cfm/sf x gross building area (in sf) + people outdoor air rate from Table 1 (cfm/person) x building occupancy
In SI units:
Minimum outdoor air rate in L/s = 0.3 L/s*m2 x gross building area (in m2) + people outdoor air rate from Table 1 (L/s per person) x building occupancy
Table 1. People outdoor air rate
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Occupancy category*
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People outhoor air rate
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cfm per person
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L/s per person
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Auditorium seating area
Libraries
Office space
Places of religious worship
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5
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2.5
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Mall common areas
Museums
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7.5
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3.8
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Classrooms
Daycare
General manufacturing
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10
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5
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Health club/aerobics
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20
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10
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Alternatively, the rates may meet the Ventilation Rate Procedure outlined in Section 6.2 of ASHRAE 62.1 editions 2016, 2013, 2010, or 2007.
For naturally ventilated spaces, meet the minimum requirements in Table 2:
Table 2. Minimum opening location and size requirements for naturally ventilated spaces*
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Opening type
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Location of opening
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Size of opening
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Maximum distance from operable openings**
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Minimum opening area***
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Single side opening
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2 x ceiling height
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4% of floor area
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Double side opening
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5 x ceiling height
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4% of floor area
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Corner opening
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5 x ceiling height (along a line drawn between the two openings that are farthest apart.; for floor area outside line, comply with single side opening)
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4% of floor area
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Multifamily
For all common areas in the building, meet requirements above.
For residential units, have an operable window in each bedroom with the total openable window area a minimum of 4% of the room floor area or meet the following minimum requirements for the entire unit:
In I-P units:
Minimum outdoor air rate in cfm = 0.03 cfm/sf x dwelling unit floor area (in sf) + 7.5 cfm/person x (number of bedrooms + 1)
In SI units:
Minimum outdoor air rate in L/s = 0.15 L/s*m2 x dwelling unit floor area (in m2) + 7.5 cfm/person x (number of bedrooms + 1)
In each full bathroom, have either an exhaust fan that vents directly to the outdoors or an operable window.
Europe ACP: Arbeitsstaettenrichtlinie ASR 5
Projects in Europe may use Arbeitsstaettenrichtlinie ASR 5 or ASR A3.6 as a local equivalent to ASHRAE Standard 62.1-2010, natural ventilation procedure.
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