The red light is still flashing after I put a new filter in. (Red light flashes indicating filter needs to be changed.) I don't see a reset button.

You have to push and hold the UV Control Button for 5 seconds to reset the Filter Change indicator.

do we only need this filter? it has the black and white part? or do we need to buy another one?

Yes you do need to buy another one...But if you keep cleaned off it will last about a year...I love mine so much bought another one ,because I live in 2,000 sq ft...

Can the pre-filter be sprayed off with water? We use it next to the cat litter box and it gets dusty fast!

I don't recommend it. The filter will crumble and fall apart (i've tried!). What I normally do is get a disinfectant wipe and wipe the filters down. I have cats too and mine is also relatively close to the liter box.

how often do I change filter?

I thought the sign signal would come up to replace? Or you just replace without the sign coming up? I had mine for more than a year and I haven't changed the filter because the sign never came up? I don't use it all day just when the kids are in the room mostly during night time and it is in low. Could that be it? Should I have it on even when the kids are not in the room?

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GermGuardian, Filter B HEPA Pure Genuine Air Purifier Filter, Removes 99.97% of Pollutants, Wildfire Smoke, Odors, for Ac4825, Ac4300, Ac4850, Ac4880, Ac4900, Cdap4500, Ap2200, Flt4825

Product ID: 1143665

Details

Brand
GermGuardian
Color
Yellow
Control Method
Touch
Item Weight
5.6 ounces
Product Dimensions
1.29"D x x

🌿Activated carbon odor control

🏠Covers up to 300 sq ft

🦠99.97% particle removal

$56.38

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Sold byAmazon British Virgin IslandsDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌬️ Elevate your air game—because clean air is the new luxury.

ODOR FREE OASIS - Activated carbon pre-filter neutralizes odors from smoke, pets, and cooking for fresher indoor air.
PERFECT FOR YOUR SPACE - Efficiently purifies air in rooms up to 300 square feet—ideal for home offices and living areas.
SEAMLESS COMPATIBILITY - Fits a wide range of GermGuardian models including AC4825, AC4300, AC4850, and more.
BREATHE PURE LIVE BETTER - Genuine HEPA PURE filter captures 99.97% of microscopic pollutants down to 0.1 microns.
TRUSTED NORTH AMERICAN QUALITY - Scientifically tested and proudly made in North America for reliable, consistent performance.

The GermGuardian Filter B HEPA Pure is a genuine replacement air purifier filter engineered to remove 99.97% of airborne particles as small as 0.1 microns, including dust, pollen, pet dander, and wildfire smoke. Featuring a multi-layer filtration system with an activated carbon pre-filter, it effectively reduces odors and volatile organic compounds. Compatible with multiple GermGuardian models, it covers rooms up to 300 square feet, delivering scientifically validated, North American-made air purification for healthier indoor environments.

Specifications

ASIN	B0055521W0
Best Sellers Rank	#924 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #5 in Air Purifier Filters
Brand	GermGuardian
Brand Name	GermGuardian
Color	Yellow
Contaminant Filtration Capability	dust, odors, wildfire_smoke
Control Method	Touch
Customer Reviews	4.8 out of 5 stars 43,170 Reviews
Filter Class	HEPA
Filter Type	HEPA
Floor Area	300 Square Feet
Global Trade Identification Number	00895916000868
Included Components	Genuine GermGuardian HEPA Replacement Filter
Item Dimensions D x W x H	1.29"D x 4.76"W x 15.77"H
Item Type Name	Air Purifier Filter
Item Weight	0.35 Pounds
Manufacturer	Guardian Technologies
Model Number	FLT4825
Part Number	FLT4825
Particle Retention Size	0.1 Micron
Power Source	Mechanical/kinetic
Product Dimensions	1.29"D x 4.76"W x 15.77"H
Smart Home Compatibility	Not Smart Home Compatible
Special Features	HEPA air filters capture 99.97% of dust, allergens, and wildfire smoke particles down to 0.1 microns from the air.
UPC	895916000868
Unit Count	1.00 Count
Warranty Description	No Warranty

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