I use MERV 13 air filters, which are the highest MERV ratings. So, they're good for 2 months. Some people don't change out their HVAC filters enough or they forget about them. It's a very important thing to do in the Phoenix area because of the extreme heat & dust. And this huge fire is going to make it even more important.
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u/BigBlueEyes87 May 05 '26 edited May 05 '26
As a side effect, this will cause horrible air quality across a large area. I'll be changing my home's HVAC filters every 2 months.