4 ms·
On the effectiveness of various MERVs on various PM sizes: * https://www.greenbuildingadvisor.com/article/understanding-filter-ratings-merv-fpr-and-mpr https:/
by throw0101a 5y ago
On the effectiveness of various MERVs on various PM sizes:
* https://www.greenbuildingadvisor.com/article/understanding-filter-ratings-merv-fpr-and-mpr https://www.greenbuildingadvisor.com/article/understanding-f...
* http://dx.doi.org/10.3390/ijerph120708448 http://dx.doi.org/10.3390/ijerph120708448
* https://www.researchgate.net/figure/Mean-PM-25-removal-efficiency-for-HVAC-filters-listed-by-MERV-classification_fig1_280321614 https://www.researchgate.net/figure/Mean-PM-25-removal-effic...
Just make sure your system can handle whatever MERV you go with (higher = more back pressure that needs to be designed for).
- blacksmith_tb 5y agoYes, I would go higher than MERV13 if I could, my HRV is a Zehnder, which doesn't support better filters without some modifications.
- throw0101a 5y agoAh yes, it seems that the built-in stuff has restrictions, but there are external boxes that can be added: * https://www.zehnderamerica.com/our_products/comfowell-silencer-and-casings/ https://www.zehnderamerica.com/our_products/comfowell-silenc... Which allow MERV 16 and even carbon filters: * https://www.zehnderamerica.com/product-category/comfowell/ https://www.zehnderamerica.com/product-category/comfowell/ * https://www.youtube.com/watch?v=OrG7oG8Tvp8&t=14m35s https://www.youtube.com/watch?v=OrG7oG8Tvp8&t=14m35s