Prior to the Spring 2021 semester, the air filtration systems of most MICA buildings were upgraded from “MERV 8” and “MERV 11” filters to the much higher performance “MERV 13,” and on occasion “MERV 14” filters.
What exactly does MERV mean? MERV is an acronym for Minimum Efficiency Reporting Value and it is a standardized method to report the smallest particle size that will be trapped by a filter. The higher the number, the smaller the particle size. Smaller particles being trapped means more effective filtration.
The previous MERV 8-11 filters used in MICA’s building are capable of filtering 75% of particles between .3 to 10 microns. The new MERV 13 filters installed can effectively filter out 90% or more of those particles.
So how big is a micron? See the chart below to gain a better understanding of just how small a micron is.
Below is a list of MICA's buildings and their current air filtration systems.
Air Filtration Systems
|1212 Mt Royal Ave.||MERV 13 filtration|
|1501 Mt Royal Ave.||MERV 13 filtration|
|1515 Mt Royal Ave.||MERV 14 filtration|
|Dolphin||MERV 13 filtration|
|Fox/Brown||MERV 14 filtration|
|Bunting||MERV 13 filtration|
|Lazarus/1801||MERV 14 filtration|
|Mt Royal Station||MERV 13 filtration + portable air purifiers installed throughout building|
|Bungalow||MERV 13 filtration|
|Main||Portable air purifiers installed throughout building|
|Film Centre (JHU building management of mechanical systems)||MERV 13 filtration|
|Annex||Portable air purifiers installed on each floor. A mechanical system renovation will occur in December 2021/January 2022|
|Founders Green (Latrobe & Glace Grill)||MERV 13 filtration|
|Founders Green Apartments||Low density residential occupancy with operable windows, mechanical system brings in outdoor air|
|Leake Hall||MERV 13 filtration|
|Meyerhoff House||MERV 13 filtration|
|Gateway||MERV 14 filtration|
|1500 block of Mt Royal Ave. apartments||Low density residential occupancy with operable windows|
|Kramer House||Single occupancy with operable windows|