How Long Can You Leave a PC Projector On?

A PC projector's lamp should be cooled before the projector is moved.

Conserve Power

If you're not using an electronic device, it should be turned off. Projectors are no exception. Projector lamps generate heat and use electricity. Also, projector lamps have a limited lifespan. A projector lamp that is left on longer will fail more quickly.

Keep the Lamp Cool

Projectors get hotter as they are used longer, especially the lamps. Projector lamps are also more vulnerable to damage when they are hot.

Projectors have fans that cool the lamps when the projector is powered. If the entire projector is turned off, the cooling fan will not operate.

Bottom Line

Always power off the projector lamp when the projector is not in use, but never turn the projector completely off while the lamp is hot. Keep your projector on as long as it takes for the lamp to cool. Projector owner manuals may provide a recommended cooling time.

References

• Projector People: Projector Care Guide
• Focused Technology: Projector Lamp Care