Clean Air Building Certificate

Space Type: BOS-School
Establishment Name: Hennigan James W K 8
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: Univent Central HVAC
Min ACH: 3.5 Max ACH: 6.5 Avg ACH: 4.9 eACH: 0
Filter MERV:
Percent Outside Air: 70
ON and Ventilates Entire Indoor Area: Yes
Vent Clearance min 6 ft: Yes
No of Rooms: 6 sqft: 891 cuft: 8910 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 313. % Outside air 83. Calculated air volume (cfm) outside 511. Calculated air volume (cfm) return 104. Combined air volume (cfm) 615. ACH outside 4.4. ACH merv filter return air 0.9. ACH total 5.2. ACH Copy paste check (uses total or outside) 4.4.

Room 401. % Outside air 68. Calculated air volume (cfm) outside 530. Calculated air volume (cfm) return 250. Combined air volume (cfm) 780. ACH outside 3.9. ACH merv filter return air 1.8. ACH total 5.7. ACH Copy paste check (uses total or outside) 3.

Room 404. % Outside air 69. Calculated air volume (cfm) outside 410. Calculated air volume (cfm) return 180. Combined air volume (cfm) 590. ACH outside 3.0. ACH merv filter return air 1.3. ACH total 4.3. ACH Copy paste check (uses total or outside) 3.

Room 419. % Outside air 77. Calculated air volume (cfm) outside 360. Calculated air volume (cfm) return 110. Combined air volume (cfm) 470. ACH outside 2.6. ACH merv filter return air 0.8. ACH total 3.5. ACH Copy paste check (uses total or outside) 2.6.

Room 301. % Outside air 63. Calculated air volume (cfm) outside 375. Calculated air volume (cfm) return 225. Combined air volume (cfm) 600. ACH outside 2.9. ACH merv filter return air 1.7. ACH total 4.6. ACH Copy paste check (uses total or outside) 2.9.

Room 104. % Outside air 65. Calculated air volume (cfm) outside 305. Calculated air volume (cfm) return 165. Combined air volume (cfm) 470. ACH outside 2.1. ACH merv filter return air 1.1. ACH total 3.2. ACH Copy paste check (uses total or outside) 2.1.

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.