Fire Smoke HRV Intake Filtration – GreenBuildingAdvisor

I’ve posted before about the fire smoke filtration system I’ve been working with for about 3 years now.  It’s based around an 8” AC Infinity (refillable) carbon canister, and a 16x24x5” MERV16 filter.  As I write this PM2.5 outside in NW Ontario is 113 ug/m3 due to dense fire smoke.  Inside, we’re at 5 ug/m3 while the HRV runs at 75CFM.  Video is 1 minute long:

https://youtube.com/shorts/m5MNmqSAIf8?si=Mo_cor0yIPIp4_c1

I hope it proves useful. The system has been in play now for 3 years with temps in winter below -35C. I leave the carbon canister bypassed and use a cheaper filter in winter.  Filter life on the carbon canister when used as needed is about 2 years.  The MERV16 about 12 months of use.