Hey, so I am shopping dust collectors, and I started putting together a spreadsheet to compare the published specifications of several units. I thought this would help bring clarity, but the filter ratings don't completely make sense to me.
I don't want to introduce any bias based on brand, so here are the published ratings all by themselves:
filter 1: Merv 15 and 99.999% @ 0.5 microns
filter 2: Merv 16+/- and 99.97 @ 0.3 microns
filter 3: Merv 13 and 99.9% @ 0.2-2 microns
Is it possible to draw any meaningful conclusion from these specifications? The MERV rating and filter efficiency do not seem to correlate!
Based on the filter efficiency numbers, I could be convinced they are the same filter! (But they are not the same filter...)
What do you think? My assumption is the filter rated down to 0.2 microns is the most efficient filter, but the MERV number is actually the lowest. So is it the best filter here, or the worst? Which rating should I pay attention to?
I don't want to introduce any bias based on brand, so here are the published ratings all by themselves:
filter 1: Merv 15 and 99.999% @ 0.5 microns
filter 2: Merv 16+/- and 99.97 @ 0.3 microns
filter 3: Merv 13 and 99.9% @ 0.2-2 microns
Is it possible to draw any meaningful conclusion from these specifications? The MERV rating and filter efficiency do not seem to correlate!
Based on the filter efficiency numbers, I could be convinced they are the same filter! (But they are not the same filter...)
What do you think? My assumption is the filter rated down to 0.2 microns is the most efficient filter, but the MERV number is actually the lowest. So is it the best filter here, or the worst? Which rating should I pay attention to?