what to do if water heater is leaking from bottom
Quick Scoop
If your water heater is leaking from the bottom, turn off the power and water supply right away , then drain the tank if it’s safe to do so and call a plumber or replace the unit if the tank itself is leaking.
What to do first
- Shut off power.
If it’s electric, switch off the breaker; if it’s gas, turn the gas control to off.
- Shut off the water supply.
Close the cold-water inlet valve near the top of the heater, or use the main water shutoff if the valve is stuck.
- Drain the tank if needed.
Attach a hose to the drain valve at the bottom and run it to a safe drain point; this helps limit water damage and makes inspection easier.
What the leak might mean
A leak from the bottom can come from a loose drain valve , faulty fittings , or condensation , but if water is actually coming from the tank body itself, that usually points to corrosion or a failed tank , which is often not worth repairing.
When to call a pro
Call a plumber promptly if:
- The leak is steady or getting worse.
- You see rust, corrosion, or water coming from the tank seam/body.
- You smell gas, see electrical issues, or can’t safely shut the unit down.
- Water has reached floors, walls, or nearby appliances.
A safe rule of thumb
If the leak is from a valve or connection , it may be repairable. If it’s from the tank itself , replacement is usually the realistic fix.
If you want, I can also give you a 1-minute checklist for gas vs. electric water heaters.