How to Block Light From Window AC Unit

Although window air conditioners are a common choice for cooling houses, they can also let light into the room at night. If you’re attempting to relax or sleep, this can be a bother. Thankfully, there are techniques to dim the light coming from your window air conditioner. This post will demonstrate to you how to conceal light from a window air conditioner. To learn more, continue reading.

Because they are very inexpensive and simple to install, window air conditioners are a popular choice among households for cooling purposes. But having a window air conditioner could have the drawback of letting light into your house at night. Although it might not seem like a major concern, the light can be distracting if you’re attempting to unwind or fall asleep at home.

A Detailed Guide on How to Block Light From Window AC Unit

Determine the source of the light before attempting to block it with your window AC unit. The usual method for doing this is to examine and assess the light source’s characteristics. Common sources include incandescent bulbs, fluorescent tubes, LED lights, and direct sunlight. Blocking the light is the next stage. Depending on the source, there are various methods for doing this. For instance, if the light is coming from an incandescent bulb, you may tape or cover the bulb. You might place a piece of paper or cardboard over the fluorescent tube if the source of the light is that.

After locating the light source, you must choose an effective strategy for blocking it. Use blackout curtains, light diffusers or blinds, or reflective materials like aluminium foil or Mylar sheets to cut down on the amount of light that gets to your window AC unit.

When attempting to block out excessive light from your window AC unit, there are a variety of different tactics you might use. You can block out unwanted light without sacrificing convenience or usefulness if you carefully consider your options and choose the one that works best for your needs.

Option 1: Use Blackout Curtains

Heavy, bulky blackout curtains are made to totally block out all light. The fabric used to make them is typically dense and densely woven, like velvet or twill.

Blackout curtains are an excellent choice if you want to fully block out the light from your window air conditioner. They’ll keep your space cool and dark, and they’ll also help muffle noise.

Choose blackout curtains that are made expressly to block out light if you’re looking for some. Even though some curtains are marketed as “blackout,” they only partially block light.

You can use blackout curtains to prevent the light coming from your window air conditioner by hanging them over the window. It might be necessary to secure them with tape or hooks. To prevent light from escaping, make sure the curtains completely enclose the air conditioner. To block more or less light as needed, you can move the blackout curtains into different positions.

Using blackout curtains is an easy and effective solution if you’re looking for a quick way to hide the light from your window AC unit. These drapes are made to keep outside light out of the space, making them perfect for reducing obtrusive AC light.

Option 2: Use Foil Tape

Use foil tape as one solution if you want to stop light from passing through your window AC unit. You may pick one that precisely matches the style and atmosphere of your home because this type of tape comes in a variety of thicknesses and hues.

Foil tape is fantastic because it is simple to apply and remove. The tape should first be divided into pieces that will fit around any openings or crevices between the air conditioner and the wall. In order for the tape to remain in place, push it into position. Trim away any extra tape if any is present.

Another advantage of using foil tape to hide stray light from your window air conditioner is that it adds an additional layer of insulation, keeping your house cooler in the summer.

Foil tape could work well to block the light coming from your window air conditioner. But for the best results, use a tape that is made of strong materials and is made just for this purpose.

Option 3: Use Diffusers or Blinds

If you want to cover the light coming from your window air conditioner, you have a variety of solutions. The use of diffusers or shades on the window that houses your air conditioner is one of the most well-liked methods.

Diffusers are pieces of mesh or cloth that can be immediately affixed to the window frame, preventing any light from entering your room. You should be able to select a diffuser that fits your specific windows and needs because they come in a variety of sizes and types. You can also cover your windows with blinds to block out undesirable light as an alternative. There are numerous varieties of blinds on the market, which you can choose from based on how much privacy and sunshine you want to let in.

Installing blackout drapes on your windows is another option if you’re seeking a more long-term fix. People who need to sleep during the day or work night shifts would benefit greatly from blackout curtains because they are made to totally block out all light. Although a little pricy, these curtains will last for many years and, when closed, give total darkness.

Option 4: Use Window Film

You might try utilising window film if you don’t want light from your window air conditioner to enter your home. You can put it on the glass immediately; it is a thin, clear plastic film. It will erect a wall that keeps out heat and light.

You can use window film, a thin substance, to cover your windows. It comes in a variety of hues, including a tinted variation that can aid in limiting the quantity of sunlight that enters your house. This can guard against furniture damage and fading on your blinds or curtains.

If you want to entirely block off any unauthorised light from entering through the windows, get a window film with a high light-blocking rating. This kind of film is typically easy to install by just peeling off the backing and sticking it to your window. You can also seek the advice of a professional installer to get the task done properly if you experience any difficulties with the application procedure.

It won’t stay forever, but window film can help prevent your air conditioner from receiving too much sunshine. As the film begins to deteriorate from exposure to light, you’ll often need to change it every few years.

Consider placing tinted glass or frosted glass in your windows to block the light from your window AC unit if you’re searching for a more long-term solution. These materials can keep unwanted light and heat out of your home, making it cooler and more comfortable in the summer.

Option 5: Use a Shade

It might be best to use a shade if you want to limit the light coming from your window AC unit without having to install any permanent fixtures. Shades come in a variety of materials, such as fabric, paper, and even metal.

Both the purpose and the aesthetic must be taken into account when selecting a window shade. For instance, if you reside in an area with a lot of sun exposure, a shade that blocks UV rays might be a useful option. Alternately, if you’re trying to cut down on the quantity of light entering your house, you could need a lighter-colored shade. 4. Check the Dimensions of Your Windows

Whatever hue you decide on, installation is usually not too difficult. The majority of blinds come with brackets that are designed to be fastened directly to window frames. Slide the shade into position after installing the brackets and make any necessary adjustments.

Make sure to pick a shade that can be quickly removed and stored if you intend to use your AC unit frequently. This will make it much simpler to get to the appliance when you need it and stop any damage that might result from leaving the shade in place for an extended period of time.

You can simply block light from your window air conditioner with these five cost-effective choices without losing design or functionality. There is, therefore, a solution that is ideal for you, whether you want to add some privacy, make your home cooler, or minimise glare.

Can I Cover My Window Ac Unit With a Curtain?

One of the most popular methods is to cover your window AC unit with a curtain in order to hide the light from it. To do this, you can either hang a curtain directly over the air conditioner or put a tension rod above it and drape curtains over it.

Using a curtain to cover the light coming from your air conditioner has many advantages. One benefit is that less sunshine will be able to enter your home through the windows and heat your space. You may need to operate your air conditioner for less time to maintain comfort in your home if you cover it with a curtain, which can also help you save money on electricity.


There are various solutions if you want to keep the light from your window air conditioner unit out of the room. Some quick fixes include using blackout drapes or shades, suspending a lightweight curtain in front of the appliance, or covering the window with something like foam board or cardboard. Whatever approach you decide on, taking measures to lessen glare and block out undesirable light will help make sure that you can use your air conditioning equipment all year long. This post about how to block light from a window ac unit should be helpful, we hope.

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