The lifespan of horse clippers can vary based on quality, frequency of use, maintenance, and the tasks it is used for. But generally, high-quality clippers from reputable brands, such as Wahl and Oster, tend to last longer, even for decades, especially if they have robust motors and durable construction. From a practical point of view, while it is difficult to provide an exact lifespan, the longevity of horse clippers directly depends upon proper care and usage.