Basic Projector Maintenance: How to clean your NexiGo projector

Amber Stefanson | February 16, 2026

Projectors are pretty low-maintenance, but they're not zero maintenance. There's a silent killer that you have to look out for. If unchecked, it can cause overheating, extra fan noise and even burn spots on your projection. The offending villain: dust.

When dust and pet hair build up in your projector vents, it can block airflow. If that happens, your projector can’t effectively push hot air out and pull cool air in. This can cause the projector to develop permanent visual defects that won't go away once your clean it.

To keep your projector in good condition, it's recommended to clean it once a month.

Luckily, cleaning a projector is super easy — they don’t get very dirty because most projectors have a closed system to prevent dust from getting deep inside the projector. The whole process takes less than 5 minutes.

In this article, I’ll give you the step-by-step instructions for cleaning your projector and your screen.

Overview

Estimated Time: 5 minutes
Step-by-step: Turn off the projector, clean the lens, and clean the air filter
How often to clean your projector: Once a month

Video Tutorial

Feel free to watch the video tutorial or keep reading for a step-by-step overview of how to clean your projector.

How to Clean a Projector Screen

Projector screens need occasional cleaning, and due to the gentle surface of the screen, the process takes a little bit of extra care. Depending on the type of screen you have, you'll need to use different materials and technique.

I'll go over how to clean a Fresnel, Lenticular, and matte white screen. Regardless of screen type, the process should not take more than 5 minutes.

Projector screens only need to be cleaned a couple times a year, but don't skip this quick task. Dust buildup can reduce color accuracy and contrast. In fact, if it's been a while, you may be suprised how much brighter and more vibrant your projector looks after cleaning your screen.

Cleaning a Fresnel Screen

Fresnel ALR Screen are the easiest to clean, but you should still take your time to avoid scratching the screen. To clean a Fresnel screen:

Clean the screen with a dry, lint-free microfiber cloth or a soft brush.
Gently wipe in a circular motion.
For a deeper clean, you can wet the cloth with water. Just make sure that you squeeze out most of the water so that the cloth is slightly damp when you use it.

Cleaning a Lenticular Screen

Lenticular screens are the most delicate screen type, and as a result will take the longest to clean. To clean a Lenticular screen:

Clean the screen with soft, dry brush.
Gently wipe in a left-to-right motion, along the grain of the screen.
Do not use any water or cleaning solutions on the screen.

Cleaning a Matte White Screen

Matte white screens are less delicate, but they're more likely to show dirt, scuffs, and other marks. For this reason, it make take a couple passes to get the more stubborn spots out the screen. To clean a matte white screen:

Clean the screen with a dry, lint-free microfiber cloth.
Gently wipe in a left-to-right motion (not circular!)
For a deeper clean, you can wet the cloth with water. Just make sure that you squeeze out most of the water so that the cloth is slightly damp when you use it.
For stubborn spots, gently dab with a Q-tip dipped in isopropyl alcohol.

What happens if you don't clean your projector?

If you don't clean your projector, dust may build up and cause it to overheat easily. Over time, this can cause irreversible damage to your projector, including permanent burn spots.

To avoid this issue, check for signs of overheating and remember to clean and power off your projector regularly.

Signs of Overheating

If your projector is overheating, you may notice the following signs:

Increased fan noise
Powers off unexpectedly and without notice
Won't power back on
Flashing or solid temperature warning light
Hot to the touch
Burning smell
Melting or discoloration on the plastic casing
Burn spots or discoloration on the projection

Burn spots are obvious and permanent signs of chronic overheating

Final Thoughts

Projectors are an investment. To help them last longer without overheating, it's crucial to practice good maintenance and remove any dust build-up from the vents. With just a few minutes a month, you can extend the lifespan of your projector by years.

Frequently Asked Questions

What can I use to clean my projector?

To clean your projector, use a dry microfiber cloth. You can also wet it slightly with water or lens cleaner as needed for a deeper clean. Do not use alcohol or other cleaning agents, as this may damage the finish.

Can I use glass cleaner on a projector lens?

You cannot use glass cleaner on your projector lens, as it contains ammonia, a powerful cleaning agent that can damage the lens.

However, you can use lens cleaner that is specially designed to remove dust and oils without harming the finish.

Can I use isopropyl alcohol to clean a projector lens?

No, you should avoid using isopropyl alcohol on the projector lens, as it may damage the finish.

Can I use water to clean my projector lens?

Yes, you can use water and a soft microfiber cloth to clean your projector lens. Just make sure to squeeze out most of the water first to avoid getting excess liquid in your device.

What are signs of a dirty projector lens?

Small dark spots and poor focus are both signs of a dirty projector lens. Make sure to clean your projector lens regularly using a dry microfiber cloth and a gentle circular motion.

How to clean a projector lens without lens cleaner

You can clean your projector lens with a dry microfiber cloth, or you can wet it with a bit of water first. Do not use glass cleaner, alcohol, or any other cleaning agents on your projector lens.

How often should you clean a projector?

Clean your projector once a month to avoid dust buildup and issues caused by overheating.