from Arlington, VA United States
This is the third bulb purchased in the past 2-yrs. I run my air filter 24/7, and the longest the bulb has lasted was 7 months, the current bulb. Previous bulb lasted only 4 months, and the first one lasted about 6 months. I only turn the unit off when I change the filters and clean the pre-filter element.
I don't know how Oransi can state a life of 12-24 months for these bulbs! I am going to see if I can find a different manufacturer for less after this bulb purchase because $40 every 6 months is TOO MUCH!