A power supply’s lifespan depends on several key factors, including operating temperature, load conditions, component quality, and ventilation. Excessive heat is one of the leading causes of premature failure, making proper cooling essential for long-term reliability. Regular maintenance and correct sizing also help prevent unnecessary stress on the system. High-quality capacitors and protection circuits improve durability in demanding applications. By understanding what impacts performance over time, businesses can reduce replacement costs, avoid unexpected failures, and maintain stable power delivery for critical equipment.