I like to change the HVAC filter in my home weekly or bi-weekly as I have a golden retriever and the filters get dirty quickly. I used to use expensive filters before, but I decided to try these. They seem to work just as well when collecting particles, and the system continues to work well. I like to have a good supply on hand so I don't have to worry about them running out and getting them to do their job. The price is very reasonable so I will stick with this brand in the future.
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