Water Heater Leaking? What Homeowners Should Do First
Editorially reviewedBy the Home Services Resource Center Editorial TeamLast reviewed:
This guide is written to help homeowners understand common plumbing repair, installation, water heater, drain, and emergency considerations. It is educational and is not a substitute for an on-site evaluation by a licensed plumber. HSRC does not perform work directly, set contractor pricing, or guarantee availability — services and response times vary by location and provider.
Quick Answer
Turn off the power or gas, shut off the water supply to the heater, drain it if necessary, and contact a licensed plumber. A leak from the tank body usually means replacement; a leak from a fitting or valve may be repairable.
Key Takeaways
- Shut off power or gas first
- Shut off water supply to the heater
- Tank leaks usually mean replacement
- Drain pan presence affects damage
Where the leak is matters
Top-of-tank fittings, pressure relief valve, drain valve, or tank body — each has different implications.
Ready for the next step?
Get connected with a local licensed plumber, or call the plumbing line.
Frequently asked questions
How urgent is a leaking water heater?
Tank-body leaks are urgent. Small fitting leaks are less urgent but still need prompt repair.
Related plumbing articles
More from Water Heaters and related topics.
Water Heaters
Water Heater Repair or Replacement: How Homeowners Can Think Through the Decision
Water Heaters
Tank vs. Tankless Water Heater: What Homeowners Should Compare
Plumbing Help
When to Call a Plumber
Leaks & Burst Pipes
What to Do About a Burst Pipe
Drain Cleaning
Why Drains Keep Clogging
Leaks & Burst Pipes
Plumbing Leak Warning Signs Homeowners Should Know