Water heater leak repair
First shut off the cold-water valve on top of the heater and turn off its power or gas. Leaks at the inlet and outlet fittings, the drain valve or the relief valve are usually repairable; water seeping from the tank body means the tank has failed and needs replacement.
Not every puddle near a water heater is a dying tank. Condensation, a loose fitting, a dripping drain valve or a relief valve doing its job can all leave water on the floor.
Where the water comes from decides the fix, so the first step is to dry the area and watch where it reappears.
Signs you need water heater leak repair
- Water pooling around the base
- Drips from the relief-valve pipe
- Wet fittings at the top of the tank
- Rust streaks on the tank jacket
How water heater leak repair is done
- 1
Make it safe
Close the cold supply and turn off power or gas.
- 2
Find the source
Fittings, drain valve, relief valve, condensation or tank.
- 3
Repair or replace
Replace the failed part, or quote a replacement for a leaking tank.
What affects the cost of water heater leak repair
- Which part is leaking
- Whether the tank itself has failed
- Code updates if replacement is needed
Ask for the trip fee and the total price before work starts.
Water heater leak repair: what you can do yourself
Safe to try
- • Close the cold-water valve and turn off power or gas
- • Tighten a dripping drain-valve cap
Stop and call if
- • Water comes from the tank body
- • The relief valve discharges repeatedly
- • Water is near electrical connections
Need water heater leak repair? Call now
SteadWell is a free referral service, not a plumbing company. Calling (833) 753-0180 connects you with an independent, licensed plumber who serves your ZIP code; the plumber quotes and performs the work. Calls may be recorded.
Water heater leak repair: common questions
Why is my water heater leaking from the relief valve?
Occasional drips can mean a worn valve; regular discharge often means thermal expansion with no expansion tank, or excessive pressure or temperature.
Can a leaking water heater tank be repaired?
No. A leak from the tank body means the inner tank has corroded through; it needs replacement.
Is a leaking water heater dangerous?
Rarely immediately, but it can cause water damage and, near electrical parts, a shock risk. Shut it off and call.