We live in the woods, with lots of garden around the house. There's lots of pollen in the summer, and dust and normal airborne allergens in the winter. We had all been sniffling, even the dogs! But I switched to these filters about a week ago and yesterday we commented that we are all sniffling less. I can only assume it's the filter doing its job!
With the addition of my putting a UVC light system in my HVAC system and your high quality and well priced HEPA filters, makes our family breath without the usual allergy sneezing!
Purchased an annual supply of Merv13 and the packaging was excellent! These filters traveled the country during a pandemic in peak holiday season and made it home intact. First time buyer, will buy again. (Second purchase)