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A Guide To Cooling Down Your Projector

Are you bothered about your projector overheating? Do you face the challenge of cooling down your projector while in use? If so, you’ve come to the right place!

Once you notice your projector is overheating, you reduce the heat by placing it somewhere that allows proper ventilation, improving the airflow in the room, using a cooling pad if it is on a shelf, or cleaning the air filter.

A Guide To Cooling Down Your Projector
A hot projector can overheat if the fan fails or the airflow is blocked.

A projector projects an image onto a screen by emitting light from a bright bulb which causes it to generate heat. Once a projector starts to overheat, it shuts off and sometimes takes time to resume functionality again. 

Also read my Guide To Cleaning Your Projector Screen (5 Simple Steps)

Reasons Your Projector May Be Overheating

Heat builds up to a specific temperature during the regular operation of the projector. When this happens, the internal temperature of the projector becomes higher than the room temperature.

There must be a constant flow of cool air to take out the warm air in the projector and prevent it from overheating. Overheating may cause your projector to malfunction or even melt, depending on the materials.

There are three possible reasons why your projector may be overheating.

  1. Location
  2. Accumulation of dust
  3. Overly warm environment

1. Location

There must be a constant flow of clean air to replace the warm air in the projector. If it is in a location that does not allow proper ventilation, it may cause trapped heat to build in the projector leading to overheating.

When positioning it, don’t tuck your projector away in an enclosed compartment near the ceiling. If you use an up-facing projector, avoid placing your projector on a heat-absorbent surface such as a carpet. 

2. Accumulation of dust

Projectors have air filters to prevent dust from reaching the internal hardware. However, when the air filters can not effectively keep out dust, it causes an accumulation. Dust accumulation then forces the projector to work extra to regulate its internal hardware, leading to overheating.

3. Overly warm environment

When a room is too warm, small, or stuffy, it does not provide the projector with cool air to prevent overheating.

In less common cases, overheating can be because the projector is an older model. 

Ways Of Cooling Down Your Projector

There are various ways to cool down a projector. And sometimes, you may have to combine more than one of these steps to get an effective result.

These steps become even more essential if you intend to use the projector for a prolonged period. We look at the ways to cool down your projector below.

  1. Clean the air filter
  2. Regularly dust projector’s surroundings 
  3. Ensure the projector’s fan isn’t blocked
  4. Supply an external fan 
  5. Use a cooling pad
  6. Remove other equipment with fans from the projector’s location
  7. Move the projector

1. Clean the air filter

It is essential to clean the air filter of your projector regularly because dust and debris can pile up and, over time, clog the filter. It prevents airflow and makes the projector overheat during use.

Fortunately, cleaning a projector’s air filter is easy, and it’s similar to changing the cleaner bag of a vacuum.

Dirty air filters are a common issue with old projectors and refurbished ones. Cleaning the air filter of a projector is an essential part of its maintenance.

However, it may not be easy to clean the air filter in some projectors because of their design or mounting. For example, a projector mounted on the ceiling can be a challenge to clean. Still, it is essential to clean the filters as often as possible.

2. Regularly dust projector’s surroundings 

While a projector does not require dusting every day, allowing dust to accumulate around it can cause overheating. It is because dust can block the vents, get into the fan, and even into the air filter.

So a projector needs to be dusted regularly, perhaps once a week. If your projector is ceiling mounted, then you should watch out for cobwebs because the projector’s fan can suck them in.

3. Ensure the projector’s fan isn’t blocked

A projector should always be in a location where its fan can get a steady supply of fresh air. If the fan is blocked, the hot air that the fan should blow out gets trapped within the unit, resulting in overheating problems.

Asides from location, placing objects close to the projector that cause blockage to the airflow will always cause the system to overheat and burn out much sooner.

It would be best if you also refrained from hanging electric bulbs close to ceiling-mounted projectors. Besides the light interfering with on-screen image brightness, the lightbulbs’ heat can contribute to overheating. 

4. Supply an external fan

An external fan can also help cool down your projector if you place it in a proper location. The external fan’s placement is important because it will only blow hot air back into the projector if the fan isn’t in an appropriate position. 

Installing an external fan may increase background noise, but increasing the volume should compensate for that. External fans are cheap and easy to find, either online or in electronic stores.

5. Use a cooling pad

A cooling pad is an accessory designed to have small fans, typically two or three, within a metal framework. They are primarily used for laptops, as many have vents on the bottom and apply for projectors. 

Cooling pads are quiet, even ones with multiple fans, only produce a little ambient noise, detectable when you turn the volume down. They offer a simple solution to keep your projector cool when in use for prolonged periods.

6. Remove other equipment with fans from the projector’s location

Entertainment setups usually have many components connected, and these devices release heat when the power is on.

When these devices are set up too close to the projector, overheating becomes likely because the projector’s fan sucks in the hot hair from the other equipment fans.

It is advisable to move devices that generate heat away from the projector or switch them off while the projector is running.

7. Move the projector

You can not move the other connected devices, so it’s advisable to move the projector to a location with better airflow for its fan. Ceiling mounted projectors are ideal, as there is little to block the fan on the top; however, they are more difficult to dust.

Another option is to place the projector on a shelf, ensuring enough space on its sides and back.

Projector Cooling FAQs

How long does it take for a projector to cool down?

It takes the lamp of your projector about 30 minutes to cool down after powering down. Please do not move the device around while it cools. A projector is more susceptible to damage while the lamp is hot.

What happens when a projector overheats?

Overheating is a common issue with most projectors. It causes the projector’s lamp to fail prematurely. When the projector is in use, you should not maneuver it because the projector’s hot temperature makes it susceptible to damage.

Why is it necessary to clean the air filter of a projector?

Dust particles settle on air filters not cleaned regularly and gradually clog them, preventing cool air from entering the unit, causing the projector to overheat.
Dusty air filters can cause dust to settle on the projector lens, distorting the projected image or making the colors dull. You will need a professional to clean the projector’s lens if such happens.

Sources

  1. Vizocom
  2. Hp
  3. Ifixit
  4. Epson