We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Four small UV-C bulbs with two-pin G23 bases in a clear pack

LB4000 5W UV-C Replacement Bulb 4-Pack

SKU CH-777P-4GDCJ

Four 5 W UV-C lamps with G23 bases, 6 000-hour life and 253.7 nm output for compatible Germ Guardian purifiers

  • TypeULTRAVIOLET, 39101600
  • Watts5 watts
  • Average Life6000 hours
  • Lamp ToneUV-C
  • Compatible with multiple Germ Guardian models including AC4825 AC4900 AC5350
  • 5 watt UV-C output at 253.7 nm wavelength for effective air treatment
  • G23 two-pin base allows straightforward tool-free bulb replacement
  • Rated 6000 hour lifespan reduces replacement frequency to once yearly
  • Four-bulb pack provides spare units for continuous air purifier operation

LB4000 5W UV-C Replacement Bulb 4-Pack

This pack contains four new 5-watt UV-C lamps with a G23 two-pin base, rated for 6,000 hours of service life. They are designed as direct replacements for the LB4000 bulb used in compatible Germ Guardian air purifiers.

Compatibility and use

The bulbs fit models including AC4300BPTCA, AC4825, AC4850, AC4850PT, AC4900, AC4900CA, AC5300B, AC5350B, AC5350W, AC5900, CDAP4500 and CDAP5500. Buyers with other purifier brands or models requiring a different base type or wattage should verify fitment before ordering.

G23 base and 253.7 nm output

Each lamp uses a G23 2-pin base and emits ozone-free UV-C radiation peaking at 253.7 nm. This specification determines whether the bulb will install and function correctly in the target air purifier.

Highlights

  • Compatible with multiple Germ Guardian models including AC4825 AC4900 AC5350
  • 5 watt UV-C output at 253.7 nm wavelength for effective air treatment
  • G23 two-pin base allows straightforward tool-free bulb replacement
  • Rated 6000 hour lifespan reduces replacement frequency to once yearly
  • Four-bulb pack provides spare units for continuous air purifier operation

Specifications

TypeULTRAVIOLET, 39101600
BrandHWEIUA
Watts5 watts
Average Life6000 hours
Lamp ToneUV-C

Questions about this item

Which air purifier models accept the 5W G23 UV-C bulb with peak wavelength 253.7 nm?

The bulb fits Germ Guardian models AC4300BPTCA, AC4825, AC4850, AC4850PT, AC4900, AC4900CA, AC5300B, AC5350B, AC5350W, AC5900, CDAP4500 and CDAP5500.

Will the 2-pin G23 base install in the same socket as the original LB4000 bulb in my AC4825?

Yes, the 2-pin G23 base matches the original LB4000 socket, so the replacement installs directly without adapters.

How can I confirm the UV-C output is still at the 253.7 nm peak after 6000 hours?

The bulb is rated for 6000 hours; replace it every 8 to 10 months or when the purifier’s UV indicator signals reduced output.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.