A solar tube, also known as a sun tunnel or solar light tube, is a device that captures sunlight from the roof of a building and channels it down through a highly reflective tube into interior spaces, such as rooms or corridors. In the quest for sustainable living and energy efficiency, solar tubes have emerged as a beacon of innovation. These ingenious devices offer a seamless way to brighten interiors with natural sunlight, reducing reliance on artificial lighting and cutting down energy costs. Here are the primary aspects to focus on: 1. Evaluating solar tube quality, 3. They're less expensive and easier to install, and they prevent the kind of heat loss (and gain) that. Solar tubes, also known as tubular skylights or sun tunnels, are an unobtrusive method to bring soft, natural light into darker regions of your home.