Spruce was founded in 1989 with the purpose of making indoor air safer by removing a major health hazard: Radon. Since our founding, our manufactured products underscore our ongoing commitment to better indoor air quality and create healthier homes, schools and workplaces. Our current products include; inline ventilation fans, radon testing equipment, well water aeration equipment, and other radon and ventilation accessories. Two of the more popular Spruce companies are AccuStar Lab and RadonAway. Under the brand name RadonAway, our radon fans have become the most popular, reliable and effective in the world.