How often do I need to replace the filter?

GermGuardian recommends replacing the HEPA filter every 6 to 12 months, depending on use. The UV-C lamp should be replaced annually.

Does the ionizer produce ozone?

The ionizer is optional and can be turned off. When on, it may produce trace amounts of ozone, but within regulatory limits.

Yes, but on high settings it can be loud. Many users prefer to run it on low or medium in bedrooms.

Yes, the UV-C light can be turned off independently, and the purifier will still function with HEPA and odor filtration.

The CADR rating is not specified in the provided specs, but it is designed for large rooms up to 837 sq. ft.

At Guardian Technologies, for $399.99, as of our latest check.

2 stores we checked sell it, including Walmart, Guardian Technologies.

$399.99at Guardian TechnologiesChecked 39 min ago

Compared across 2 stores. Prices are checked against each store and labelled with when.