Water Heater Leaking

• Loose fittings at cold/hot connections or expansion tank
• T&P relief valve dripping due to pressure/temperature issues
• Drain valve leak (common with older plastic valves)
• Condensation mistaken for a leak during high-demand cycles
• Corroded tank leaking from the bottom—often requires replacement

DIY-safe checks: Observe the leak location and severity—do not open sealed components.

• Look for water at the top connections, valve area, or from the bottom seam
• Check if the T&P valve discharge pipe is wet (valve may be relieving pressure)
• Inspect the drain valve for slow drips
• Confirm the pan/drain line (if present) is not overflowing

1. Shut off the water heater: gas control to OFF (or electric breaker off), then close the cold water supply valve.
2. Dry the area and monitor to identify the source (top fittings, valve drip, or tank bottom).
3. Tighten accessible fittings gently; replace flexible connectors if visibly corroded (if you’re comfortable and it’s accessible).
4. If the T&P valve is dripping, do not cap the pipe—schedule service to check pressure/expansion tank.
5. If water is coming from the tank bottom seam, plan for replacement and protect the area from flooding.

Call a pro immediately if you see active flowing water, water from the tank body/bottom seam, repeated T&P valve discharge, rusty water, or signs of overheating. A plumber can diagnose pressure issues, replace valves safely, or replace the unit to code.