Do Projector bulbs go bad on the shelf?
The short answer is “no”. Projector lamps do not go “bad” sitting on the shelf. These projector bulbs are designed to withstand very harsh temperature and pressure changes while operating in the projector. Sitting on the shelf will not cause the lamp to lose any of its potency.
When you buy your projector lamp you quickly realize why you will do almost anything to extend its life. The cost of these bulbs range from about $250.00 and to over $1000.00 per module.