GermGuardian LB4000 GENUINE Replacement Bulb for Air Purifiers

Works perfectly. Easy to install.

I purchased two bulbs, one for each of my Germ Guardians. I replaced the the first bulb (after reading the Q&A section. yes, its tricky, but one you get the metal plate loose its easy). I replaced the first bulb. It was INOP. then I tried the second bulb on the same unit. Also INOP. I inspected both bulbs and one had a jiggle inside, so I figured it was bad. I tried the "good" one again facing both positions and it was still not working. So I proceeded to return both bulbs on amazon. I was surprised to get a pop-up window that said "chat with a rep before returning, over 50% of issues with this product can be resolved with a representative." Obviously, I thought that was crazy, but okay, I'll chat. To make a long story short, the rep asked me to try the new bulbs in my Other Germ Guardian. I had not done this because a bulb is either good or bad, right? But I had also read all the reviews saying these bulbs were bad from stock and I thought this couldn't hurt especially since I have a second unit. To my surprise, BOTH the jiggly bulb and the "good" bulb BOTH worked on my other Germ Guardian. Apparently, the connector socket is what failed on my first Germ Guardian, along with the bulb. After inspecting both burned bulbs, I found one to be severely dark while the other was just light brown. The darker one was the one that had the connector burned as well. I understand that most people might not have another Germ Guardian in the the house to do this experiment. But I caution people to test the connector before even buying these bulbs. If you are getting power, then go ahead and purchase the replacement. But if you are not getting power to the socket, don't waste your $. If your Germ Guardian is still under warranty, you may be able to get a replacement for the entire unit. I'm glad I contacted customer service. At least I have UV in my kids room where I need it to kill the stink of shoes :o] My office unit will have to run without the UV until I feel like investing in a new Germ Guardian.

Works well. Excellent fit. No issues. Would recommend.

Expensive but fit my old Germ Guardian . At first when installed didn't work but with a little jiggling it came on. Wasn't hard to install , you have to take the metal cover off to find it. I guess it is working , the blue light is on.

Easy to replace the burned out bulb! Just be aware that you will need a screwdriver to make the switch. I watched a YouTube tutorial which was very helpful.

Does the job.

Fits my germ guardian just fine. I am good with replacing the uv-c light though many might need help. Lol…don’t strong arm the air cleaner. Keep track of all the tiny screws (put in small bowl or container) and pull the used light directly out gently. New light goes in the same. Easy does it. Good luck. Love my germ guardian air cleaners. I have five.

Fits my filter perfectly