• Rusty water - When a rusty water appears, it is caused by rusting in your water heater or a rusty pipe.
• Water surrounding heater - The metal in the heater tank expands when it heats up, allowing fracture and a tiny leakage to happen.
• Rumbling sound - A sediment buildup happens at the bottom tank of the water heater overtime and hardens each time it heats up, causing the banging or rumbling noise to emanate from the heater.
• Burn marks - Burn marks on your water heater’s bottom could suggest two possible issues – improper venting and damaged flue pipes. This are huge signs that your water heater is failing and about time you get a replacement.