Quote:
Originally Posted by retiredguy123
For people who are still using the standard MERV 8 filters, consider upgrading to MERV 11 filters. They cost a little more, but they remove a lot more dust. I have been using MERV 11 filters for a few years and I have noticed a significant reduction in the amount of dust in the house and the HVAC system is quieter. I buy mine from FilterBuy on Amazon, and change them every 6 months. The decarded MERV 11 filter is much dirtier than the old MERV 8 filters.
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That’s what I thought as well. Our hvac/furnace guy up north and the hvac down here both said to use Merv 8 after using 11’s. They both said they’re not worth it. FWIW I change ours quarterly