Car sunshades, typically designed for vehicles, can serve as an effective, temporary solution to lower indoor temperatures when placed in windows. Unlike UV-blocking films or aluminum foil, they require fewer installation steps and effectively block sunlight, which creates hot zones indoors. Both Alabama and Texas news stations found that cars using sunshades were about 20 degrees cooler than those without. This method is particularly beneficial for renters who need quick fixes without permanent alterations, and the cutouts in sunshades can accommodate air conditioner hoses as well.
Using a car sunshade in home windows can effectively reduce indoor temperatures by blocking sunlight, similar to the benefits of UV films or aluminum foil.
HVAC expert Ray Brosnan states that light-colored window coverings with reflective backings are best for cooling hot zones created by sunlight entering windows.
Tests by Alabama and Texas news stations revealed that cars with windshield shades can be up to 20 degrees cooler in direct sunlight, showcasing their effectiveness.
DIY hacks like using car sunshades can provide cost-effective solutions for renters unable to install window units or permanent fixtures to cool their homes.
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