Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: English High School
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: Central HVAC
Min ACH: 4.8 Max ACH: 9.3 Avg ACH: 6.4 eACH: 0
Filter MERV: ---
Percent Outside Air: 69.8
ON and Ventilates Entire Indoor Area: Yes
Vent Clearance min 6 ft: Yes
No of Rooms: 6 sqft: 772.6 cuft: 7726 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 321. Diffuser air volume (cfm) 530. % Outside air 70. Calculated air volume (cfm) outside 371. Calculated air volume (cfm) return 159. Filter merv rating 13. Filter efficiency (decimal) 0.85. Combined air volume (cfm) 506. ACH outside 3.5. ACH merv filter return air 1.3. ACH total 4.8. ACH Copy paste check (uses total or outside) 4.8.

Room 420. Diffuser air volume (cfm) 573. % Outside air 70. Calculated air volume (cfm) outside 401. Calculated air volume (cfm) return 171. Filter merv rating 13. Filter efficiency (decimal) 0.85. Combined air volume (cfm) 546. ACH outside 3.7. ACH merv filter return air 1.4. ACH total 5.1. ACH Copy paste check (uses total or outside) 5.1.

Room 442. Diffuser air volume (cfm) 1172. % Outside air 70. Calculated air volume (cfm) outside 820. Calculated air volume (cfm) return 352. Filter merv rating 13. Filter efficiency (decimal) 0.85. Combined air volume (cfm) 1119. ACH outside 6.6. ACH merv filter return air 2.4. ACH total 9. ACH Copy paste check (uses total or outside) 9.

Room 507. Diffuser air volume (cfm) 627. % Outside air 70. Calculated air volume (cfm) outside 439. Calculated air volume (cfm) return 188. Filter merv rating 13. Filter efficiency (decimal) 0.85. Combined air volume (cfm) 599. ACH outside 4.1. ACH merv filter return air 1.5. ACH total 5.6. ACH Copy paste check (uses total or outside) 5.6.

Room 536. Diffuser air volume (cfm) 975. % Outside air 70. Calculated air volume (cfm) outside 682. Calculated air volume (cfm) return 292. Filter merv rating 13. Filter efficiency (decimal) 0.85. Combined air volume (cfm) 930. ACH outside 6.8. ACH merv filter return air 2.5. ACH total 9.3. ACH Copy paste check (uses total or outside) 9.3.

Room A343. Diffuser air volume (cfm) 740. % Outside air 100. Calculated air volume (cfm) outside 740. Calculated air volume (cfm) return 0. Filter efficiency (decimal) 0. Combined air volume (cfm) 740. ACH outside 5.8. ACH total 5.8. ACH Copy paste check (uses total or outside) 5.8.

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.