We have anole lizards that need the sun lamp for day and this heat-glow for night.  The manufacturer states that it should last about 3000 hours. It seems that is only the case if you keep it on continuously.  They say that excessive turning on and off of the bulb can substantially diminish the life of the bulb.  We only use the light for night so we do turn it on and off every twelve hours. The bulbs have only been lasting about two months. I purchase them from my local pet store at double the price listed here because if and when I have problems with them lasting shorter than the two months, I can take them back for an exchange. I would like to get them at the amazon price but fear that it would be more trouble than it is worth to try to have them returned if they do not last.  I am at an impasse. Would LOVE to see this bulb last six months but usually only lasts about two months when using it only for night time use.  Hope this helps.
We have anole lizards that need the sun lamp for day and this heat-glow for night. The manufacturer states that it should last about 3000 hours. It seems that is only the case if you keep it on continuously. They say that excessive turning on and off of the bulb can substantially diminish the life of the bulb. We only use the light for night so we do turn it on and off every twelve hours. The bulbs have only been lasting about two months. I purchase them from my local pet store at double the price listed here because if and when I have problems with them lasting shorter than the two months, I can take them back for an exchange. I would like to get them at the amazon price but fear that it would be more trouble than it is worth to try to have them returned if they do not last. I am at an impasse. Would LOVE to see this bulb last six months but usually only lasts about two months when using it only for night time use. Hope this helps.