The lifespan of low voltage under cabinet lights can vary depending on several factors, including the type of bulb, the frequency of use, and the quality of the light fixture. However, in general, you can expect low voltage lights to last for several years.
Many low voltage under cabinet lights use LED bulbs, which are known for their longevity. LED bulbs can last for up to 50,000 hours, which means if you use your lights for 3 hours a day, they could last for over 45 years!
Of course, the actual lifespan of your lights may be shorter due to factors like power surges, frequent switching on and off, and exposure to high temperatures. However, even with these factors, you can still expect your low voltage under cabinet lights to last for many years.