I installed the BB1000 unit within just 20 minutes. As a professional engineer I appreciated the quality of the plastics used in construction and the right-first-time no-leaks plumbing fittings. Clearly this unit has been designed and developed with longevity and trouble-free use in mind. The electronic controls have a nice solid, well-engineered feel to them and have been designed with ease of use as a primary goal. I wonder how I got by without such a bidet in earlier years?