Does Reflective Window Film Reduce Heat?

Are you cranking up the AC and still not feeling cool enough? There are better ways to keep your home comfortable during those hot summer afternoons. Reflective window film offers a simple, cost-effective solution that can stop the sun’s heat from pouring in through unprotected windows, making a big difference in your comfort and energy use. 

Reflective window film is made from a micro-thin, metalized layer that reflects the sun’s rays before they enter your home. You’ll find this technology used in other types of window films, so if reflective film isn’t right for your home, different solutions may meet your needs. However, reflective window film can be especially effective for homes with sun-exposed windows or rooms that tend to overheat quickly. 

But how does reflective window film reduce heat? Learn more about how it works and why so many homeowners choose it for their properties. 

How Does Reflective Window Film Reduce Heat?

When sunlight enters your home, it passes through the glass in your windows as a combination of visible light, infrared radiation (IR), and ultraviolet radiation (UV). Infrared radiation is the primary source of heat gain, or what makes your home feel hotter on sunny days. 

Reflective window film tackles IR head-on by bouncing a large portion of those rays away from your home and back outside. The film’s surface reflects solar radiation before it can heat the interior of your home, keeping your space cooler and more comfortable throughout the day. 

The effectiveness of any solar film is measured using Total Solar Energy Rejected (TSER). This number measures how much visible light, infrared, and UV radiation the film blocks. The higher the TSER percentage, the better the heat control the window film provides. Many high-performing reflective window films have TSER ratings between 60% and 80%, depending on the product used and the tint level. That means up to 80% of the sun’s energy is being rejected by the film, significantly reducing indoor temperatures without overworking your HVAC system. 

Additional Benefits of Installing Reflective Window Film 

Reducing heat is a major benefit of reflective window films, but that’s not all these films can do. Homeowners will also appreciate that these window films can: 

• Reduce glare. If you are tired of squinting to see the television or a Zoom call, you’ll love how reflective window film can significantly reduce glare. 
• Protect against UV rays. Most reflective films block up to 99% of UV rays, meaning there is less risk of fading your furniture, artwork, or carpets over time. 
• Increase privacy. The film’s reflective outer layer provides a mirrored effect during the day, making it harder for people on the outside to see in. You get the same beautiful view and natural light without the invasion of your privacy. 

What to Consider Before Installing Reflective Window Film

Reflective window film can be a great solution for many homes, but it may not work for everyone. Here are a few things to consider before investing in this sun-beating solution: 

• Window orientation: Reflective films perform best on windows that get direct sunlight, especially those facing south or west. 
• Interior brightness: Because they reflect so much light, reflective films can slightly darken a room. This can be a benefit for very bright spaces, but it may not be ideal in areas where you want to maximize natural light. 
• Limited nighttime privacy: Reflective films work best during the day when it’s brighter outside. If your interior lights are on at night, the privacy effect goes away. You’ll want to darken the curtains or close the blinds once the sun goes down. 

As with all window films, installation matters. DIY window film installation can result in bubbles, peeling, or visible edge gaps. The installation experts at U.S. Film Crew ensure clean, precise installation for long-lasting results that will stand the test of time. 

Beat the Heat at Home with U.S. Film Crew

So, does reflective window film reduce heat? Absolutely. It’s a proven solution for homeowners who want to make their interiors more comfortable while saving on energy costs and avoiding messy window replacements. 

If you are ready to explore your window film options, we can help. U.S. Film Crew has decades of experience with window film installation, and we offer top-quality films from brands like 3M and Llumar. Let us help you choose the best solution for your home so you can beat the heat this summer. 
Explore residential solar window film options or contact U.S. Film Crew for a free quote.