Any piece of mechanical equipment, whether it is an automobile, a sophisticated computer system, or an exercise bike; it is only as good as the people who put it together. I've been servicing Schwinn Airdynes for more than 2 decades. While the Airdyne was built essentially for home use, its design, quality and function have attracted a wide range of uses. Because of this, the Airdyne has seen tremendous use in gyms, colleges and other industrial arena's that have tested its durability. Because I've serviced this bike in every workout environment, I know what breaks and why. It's almost always because of faulty assembly. When I build an Airdyne, I don't take the factory work for granted. Key parts are re-assembled and re-torqued to insure reliability. Whether you purchase an Airdyne from me or just have one serviced, you can count on the job being done right.