Whirlpool filters should be replaced whenever the filter change indicator on the air purifiers
lets you know the filter needs to be replaced, generally every 3 months
for the pre-filter and yearly for the HEPA filter with continual use. Replacing your
Whirlpool filter is
an easy and inexpensive way to keep your Whirlpool air purifier performing its best.
9/8/12 Could not wait to try Safeguard Window Filters. I am using them, am very pleased and have high hopes that my solution to open windows is at hand! More Testimonials
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