Determining when your water heater is malfunctioning can be tricky, especially during the chilly Knoxville winters when heating systems naturally take longer to warm up. 

However, there are certain telltale signs that indicate your water heater needs attention:

• Leaks: Whether you have a traditional or tankless model, your water heater is designed to store or heat water without leaks. Any evidence of water leakage from your system is a clear sign that it's time for an inspection.
• Discolored Water: Clean, clear water is a sign of a healthy system. If your water is anything but clear, it's a red flag indicating that your water heater requires an inspection.
• Hot Water Shortages: Your hot water supply should meet your household's specific needs. If you've always had enough hot water and now you're experiencing shortages without any increase in demand, your system could be having problems. Regular hot water shortages may point to a more serious issue that warrants an inspection.
• Aging System: Water heaters typically have a lifespan of around ten years. If your system is of this age or older and you notice it taking longer to heat water, making unusual noises, or exhibiting any other abnormal behavior, it's time for a professional inspection or servicing.

Remember, the best way to determine if these symptoms indicate a serious problem is to schedule an inspection with a professional. Don't let minor issues escalate into major problems - stay proactive in maintaining your water heater.