My air purifier is almost two years old and I wanted to replace the UV lamp myself to save a lot of money. Bought two bulbs to have a spare. They were well packed in bubble wrap and hard cardboard tubes and inner cartons. The only tool I needed was a flat head screwdriver. I unplugged the air washer. There were four screws that needed to be unscrewed with a screwdriver and then I finished this by unscrewing them by hand and gently pulling the device out. Only four screws need to be removed! It may snag a bit when you pull the device out of the duct (metal-to-metal friction). I put on gloves to remove the old tube (I read that you shouldn't touch the glass part of the UV germicidal lamp with your bare hands). After pulling out the old hose it got stuck a bit and needed coaxing and I put the new one in with no problem. A rubber o-ring was packaged that I intended to use on the bottom of the tube over the four pins. The whole unit slid back easily, same with the screws, the power cord was connected and the blue light came on indicating everything was ok. I spent 20 minutes on it and the tube is $25. I've seen it cost several hundred dollars for this - don't know why it should cost that much when it's pretty basic.
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