Cleaning machines that work year after year after year We know our products are more than cleaning machines. They're your livelihood. Whether you're a cleaning contractor or a facility manager, you've got a job to do and the last thing you need to worry about is malfunctioning equipment. When it comes to durability, "good enough" is just a starting point for NSS Enterprises. From our first product, the Model M-1 vacuum cleaner, to the products we build today, machines that last an exceptionally long time are fundamental to our product line. In a time when cutting corners has become the norm, we have stayed true to our mission to produce problem-free machines.