When air is compressed, it gets very hot. And when it leaves the hose, it gets very cold. The result? Harmful condensation. Protect your compressor from rust and failure—get the BendPak Moisture Minder® to ensure that your TRI-MAX™ or LS15RS stays nice and dry. No more crawling under the tank to drain the water. Just set the timer and let the Moisture Minder® do its thing. Remember: a dry compressor is a happy compressor.