Your water heater is one of the most important appliances in your home, providing hot showers, clean dishes, and warm laundry. But like any hardworking machine, it doesn’t last forever. Knowing the signs that your water heater is nearing the end of its lifespan can help you avoid an unexpected cold shower—or worse, water damage from a failing tank. If you’re unsure whether it’s time for an upgrade, here are the most common signs your water heater needs replacing soon.