FAQ

Aftermarket Filters and Bulbs

How often do I need to replace my filter?

GermGuardian® air purifier filters should be replaced every 6–8 months depending on use. You

can always vacuum off your carbon filter layer to extend the life of your filter.

How do I replace the filter?

Please refer to your product instruction manual. A downloadable version of the manual for your

specific air purifier is available under product specifications, or under the support overview tab.

How do I know I need to replace my filter?

You will know your filter needs to be replaced when the filter turns from white to gray or black.

What is a carbon filter?

Carbon filters are also called charcoal or activated charcoal/carbon filters. It is a form of carbon

that is extremely porous making it excellent at absorbing. Carbon filters can absorb a variety of

chemicals and vapors simultaneously.

What is a pet filter?

Our PetPure™ filters are combination filters. It includes the HEPA filter that captures 99.97% of

allergens as small as .3 microns, the charcoal filter that helps capture odors, and the PetPure™

Filter Treatment that includes an anti-microbial agent to inhibit the growth of mold, mildew and

odor-causing bacteria on the surface of the filter.

What is an ionizer?

Ionizers can be combined with filters to emit a small charge to the airstream that causes

particles to stick to the filter with an attraction similar to a magnet.

Is my filter washable?

The pre/charcoal filter layer that attaches to the HEPA portion of the filter can be cleaned using

the brush attachment tool on your vacuum cleaner. Once the HEPA portion of the filter turns

from white to gray or black, the filter must be replaced entirely.

How often do I need to replace my UV-C bulb?

The following GermGuardian air purifiers and air sanitizers have UV-C bulbs that need to be

replaced every 10-12 months depending on use:

• AC225W (every 10 months)

• AC4150

• AC4100

• AC4175W

• AC4700BDLX

• AC4711W

• AC4825

• AC4870

• AC5000

• AC5250

• AC5300

• AC5350

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Aftermarket Filters and Bulbs How often do I need to replace my filter? GermGuardian® air purifier filters should be replaced every 6–8 months depending on use. You can always vacuum off your carbon filter layer to extend the life of your filter. How do I replace the filter? Please refer to your product instruction manual. A downloadable version of the manual for your specific air purifier is available under product specifications, or under the support overview tab.
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• • • • • • • • • • • • • CDAP5500 AC5900 AC5109W AC4900 AC4300 CDAP4500 AC9200 AC5109 AC4870 GG1000 GG1100 EV9102 GG3000 The following GermGuardian air purifiers and air sanitizers are designed to last the lifetime of the product: • AC4020 • AC3900 • AC4000 • LW9 • LW18 If the bulb in one of these models is not working, please contact Customer Service.
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AC9200 - On right side of unit, use paper clip and hold down for 5 seconds after inserting new filter. AC9400 - Hold down the filter control for 8 seconds after inserting new filter, unit will beep before resetting. AP5800W: Hold “AUTO” and “SLEEP CONTROL” for 3 seconds after inserting new filter. AC225, AP201: Push and hold the night light control button for 3 seconds after inserting new filter.