You might be worried about storing your air compressor in your garage, especially if the temperatures in your area drop quite low in the winter for long periods of time. While the cold might affect start-up times on some units, if you ensure your unit is properly drained with no water inside, you won’t need to worry about general storage. However, experts do recommend trying to keep the ambient temperature around your air compressor at about 40 degrees Fahrenheit or above unless you’ve taken steps to cold-proof your air compressor system.4