GermGuardian 4100 Replacement UV-C Bulb

Germ Guardian

Replace the UV-C bulb regularly to kill the most germs and odors possible

  • Designed to fit the GermGuardian AC4100 Air Purifier
  • Should be replaced every 10-12 months
  • Eliminates up to 98% of targeted airborne bacteria



UV-C is part of the ultra-violet spectrum that is filtered out by the earth’s atmosphere. The UV-C light is highly effective at penetrating thin-walled germs like viruses and bacteria. The light alters the genetic structure of the germs and they die. The light kills bacteria and viruses including rhinovirus, E. coli, and streptococcus. It also decomposes odor molecules caused by smoking, cooking, and pets.


The bulb should be replaced every 10-12 months. After removing the combination filter, use a small Philips head screwdriver to detach the UV-C Metal Shield. Remove the old bulb, insert a new bulb, and return the UV-C Metal Shield, filter, and rear cover.


  • 1 LB4100 Bulb


Bulb TypeUV-C
Model NumberLB4100
Bulb quantity per package1
Bulb for which unitsGermGuardian AC4100
Product Weight0.14 lb
Manufactured inChina
Replacement Frequency Every 10-12 months

There is no warranty for this product

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