Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: West Zone ELC Hennigan
Address: address
City: Boston
State / Province: MA
Country: USA
Date: 03/21/2021
Data Source: School District
Performed by: External Company
Company Name Address Contact: Cashins & Associates, Inc. 599 North Ave #8, Wakefield, MA 01880
Requirement Source: Boston School 3 ACH guideline

Technology: Technology
Min ACH: 4.3 Max ACH: 6.7 Avg ACH: 5.3 eACH: 0
Filter MERV: FILTER MERV RATING
Percent Outside Air: 69
ON and Ventilates Entire Indoor Area: Yes
Vent Clearance min 6 ft: Yes
No of Rooms: 6 sqft: 0 cuft: CLASSROOM VOLUME (FT3 ) No of Buildings: 1

Comments: Source Boston School District March 18, 2021. https://www.bostonpublicschools.org/Page/8463 . https://drive.google.com/file/d/1bzam7XeMQDjjv7Og_86PS41K78hBEOfT/view . assumed 10ft ceiling. wACH windows provided in dataset. Calculated wACH from measured CFM rates in dataset do not match. Differences due to errors. Did not use calculated wACH.

Room 114. % Outside air 63. Calculated air volume (cfm) outside 360. Calculated air volume (cfm) return 210. Combined air volume (cfm) 570. ACH outside 3.1. ACH merv filter return air 1.8. ACH total 4.9. ACH Copy paste check (uses total or outside) 3.1.

Room 110. % Outside air 78. Calculated air volume (cfm) outside 620. Calculated air volume (cfm) return 170. Combined air volume (cfm) 790. ACH outside 5.3. ACH merv filter return air 1.4. ACH total 6.7. ACH Copy paste check (uses total or outside) 5.3.

Room 106. % Outside air 77. Calculated air volume (cfm) outside 592. Calculated air volume (cfm) return 158. Combined air volume (cfm) 700. ACH outside 5.0. ACH merv filter return air 1.3. ACH total 6.0. ACH Copy paste check (uses total or outside) 4.6.

Room 103. % Outside air 52. Calculated air volume (cfm) outside 260. Calculated air volume (cfm) return 240. Combined air volume (cfm) 500. ACH outside 2.2. ACH merv filter return air 2.0. ACH total 4.3. ACH Copy paste check (uses total or outside) 2.2.

Room 101. % Outside air 81. Calculated air volume (cfm) outside 405. Calculated air volume (cfm) return 95. Combined air volume (cfm) 500. ACH outside 3.5. ACH merv filter return air 0.8. ACH total 4.3. ACH Copy paste check (uses total or outside) 3.5.

Room ROOM. Diffuser air volume (cfm) DIFFUSER AIR VOLUME (CFM). % Outside air % OUTSIDE AIR . Calculated air volume (cfm) outside CALCULATED AIR VOLUME (CFM) OUTSIDE. Calculated air volume (cfm) return CALCULATED AIR VOLUME (CFM) RETURN. Filter merv rating FILTER MERV RATING . Filter efficiency (decimal) FILTER EFFICIENCY (DECIMAL). Combined air volume (cfm) COMBINED AIR VOLUME (CFM). ACH outside AIR CHANGES PER HOUR (FRESH AIR). ACH merv filter return air AIR CHANGES PER HOUR (RETURN AIR). ACH total AIR CHANGES PER HOUR (TOTAL). ACH Copy paste check (uses total or outside) copy paste check (uses total).

In the wake of the COVID-19 disaster many are calling for a paradigm shift in how citizens and government officials think about the quality of the air we breathe indoors. This Clean Air Certificate lets you know that those who operate this building are thinking about the air that we breathe in this building. They have disclosed the ventilation performance of this building so that we all become educated and we never have another indoor infection disaster again.

Serial Number: CAB-1664-05152025
Not valid without serial number.


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