TABLE 1.

DIY air cleaner fan, filter, and designs evaluated in this study

Test name	Filter type	Filter loading	DIY design	Fan type/Fan speed setting
MERV13‐1″ (baseline)	MERV 13 1″	Clean	Filter taped to inlet	Fan A/High, medium, low
MERV11‐1″	MERV 11 1″	Clean	Filter taped to inlet	Fan A/High
MERV 13‐4″	MERV 13 4″	Clean	Filter taped to inlet	Fan A/High
Bungee	MERV 13 1″	Clean	Filter bungeed to inlet	Fan A/High
Smoke	MERV 13 1″	Smoke loaded	Filter taped to inlet	Fan A/High
Dust	MERV 13 1″	Dust loaded	Filter taped to inlet	Fan A/High
Fan B	MERV 13 1″	Clean	Filter taped to inlet	Fan B/High
Fan C	MERV 13 1″	Clean	Filter taped to inlet	Fan C/High
Outlet	MERV 13 1″	Clean	Filter taped to outlet	Fan A/High
Corner	MERV 13 1″	Clean	Filter taped to inlet, placed in corner of room	Fan A/High
Shroud	MERV 13 1″	Clean	Cardboard shroud	Fan A/High
Wedge	MERV 13 1″	Clean	2 − filter wedge + shroud	Fan A/High
CR Box	MERV 13 1″	Clean	4 − filter CR Box + shroud	Fan A/High