Water Heater Leaking? What to Do Right Now
A leaking water heater can go from a drip to 40 or 50 gallons on the floor. Here's how to shut it down safely and handle the water.
Shut it down safely
- Turn off the water supplyCold inlet valve on top of the tank, or the main shutoff.
- Turn off the energyElectric: flip the breaker. Gas: set the control knob to Pilot or Off.
- Be careful of hot waterWater in the tank and on the floor may be scalding.
- Contain the waterTowels, a wet vac and moving belongings away from the area.
- Document and callPhotos for insurance; a plumber for the heater and a restoration company for the water.
Where is it leaking from?
| Location | Likely cause | Usually |
|---|---|---|
| Pipes on top of the tank | Loose fittings or supply lines | Repairable |
| Relief valve (side pipe) | Too much pressure or heat, or a failing valve | Repairable; get it checked |
| Drain valve near the bottom | Loose or worn valve | Repairable |
| Bottom of the tank itself | Internal corrosion | Tank needs replacement |
When to replace
Tank water heaters commonly last around 8 to 12 years. If yours is in that range and leaking from the tank, replacement is usually the answer. The age is often on the label or in the serial number.
Dealing with the water damage
Water heaters are often in garages, closets, attics, basements or crawl spaces. Water from a tank failure can run under walls, flooring and cabinets. If it spread beyond a hard floor you can mop up, a restoration company can find hidden moisture and dry it properly. An attic water heater leak can also soak ceilings below; see ceiling water damage.
Frequently asked questions
Is a leaking water heater dangerous?
Does insurance cover water heater leaks?
Water in your home? Get a local pro on the way.
Call and we'll connect you with an independent local water damage restoration company that serves your area. The referral is free, and many local companies answer around the clock.