What is the appropriate heat insulation rate for car window films?

2 Answers
McCamille
07/24/25 9:54pm
High-quality explosion-proof and heat-insulating car window films available on the market generally have a heat insulation rate of over 50%, with some reaching up to 70%. Here is some information about heat-insulating films: Data: Creating a more comfortable driving environment. Tests by authoritative institutions show that after installing professional explosion-proof heat-insulating films, the average interior temperature decreases by 5 degrees Celsius, the dashboard temperature drops by 10 degrees Celsius, and the cooling time inside the car is reduced by 19%, making driving more comfortable and also reducing energy consumption. Function: After applying professional explosion-proof heat-insulating films, they can effectively block heat sources and thermal conduction, improve air conditioning efficiency, reduce fuel consumption, and save an average of about 3% of the car's energy.
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DelSkylar
08/10/25 2:50pm
As a car owner, I've experimented with applying car window films myself and found that an ideal heat insulation rate falls between 70% to 80%. Below 70%, driving in summer becomes unbearable as the heat penetrates easily, making the air conditioning struggle even at maximum settings. While above 80% offers more comfort, the price jumps significantly, which might be excessive for regular family cars. When choosing films, I prioritize UV protection—it must be 100%—as it's crucial for skin health, alongside maintaining reasonable visible light transmittance for safe driving. After installation, the interior cools noticeably, reducing AC usage and saving enough on electricity bills annually to offset some costs. For cost-effectiveness, mid-range brands suffice without needing top-tier products. Regular checks for film aging ensure sustained insulation performance, making long trips worry-free.
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