The short answer
Assess the Damage First
When a water heater gets wet, the first step is to turn off the power and gas supply at the breaker or valve. Do not touch the unit if standing water is present. Then, check the owner's manual for specific guidance, as some parts may be safe to dry out.
If the water was clean, such as from a supply line, the chance of repair is higher. Floodwater with mud or debris complicates things. In that case, the internal components and insulation may be contaminated, which often means the unit cannot be safely reused.
What Can Often Be Repaired
Small leaks from a pipe or fitting above the heater can sometimes be fixed by a plumber. If the water only contacted the outer jacket and not the electrical parts, a pro may dry it out and replace the anode rod or thermostat. Corroded gas burners or pilot assemblies might also be replaceable.
Electric water heaters with a wet control panel or wiring may need new parts, but that can be cost-effective. The key is that the tank itself must be intact. If the tank has rusted through, no repair will hold, and replacement becomes the only option.
- Turn off power or gas before any inspection
- Check for visible rust or corrosion on the tank
- Look for water inside the control panel or burner compartment
- Note the water heater age and its coverage status
- Have a plumber or appliance pro evaluate the unit
When Replacement Is the Safer Choice
If the tank has been fully submerged, especially in floodwater, replacement is usually the right call. Sediment and contaminants can ruin the insulation and lining, leading to leaks or health hazards. Even if the heater starts, hidden corrosion could cause a sudden failure.
Also, if the unit is older than 10 years, or if the damage is severe, a new water heater often costs less than extensive repairs. The pros can help you compare the cost of fixing versus replacing, but the final decision depends on the unit's condition and your budget.
Safety Risks You Should Not Ignore
Water and electricity are a dangerous mix. Never attempt to power on a water heater that has been flooded until a professional has checked it. Gas models can leak carbon monoxide if the burner or venting is damaged. See a doctor if you feel unwell from fumes.
Mold can also grow in damp areas around the heater, especially if the leak soaked into nearby walls or flooring. That moisture can spread, so drying out the area quickly is important. If you see mold, a mold professional can assess the situation.
Always check your policy to see if water heater damage is covered. Policies vary, and your insurer decides what is covered.
Steps to Take Right Now
Start by turning off the water supply to the heater and draining it if safe to do so. Then, dry the surrounding area with fans and dehumidifiers. Do not use the heater until it has been inspected. Keep a record of when the damage happened and any photos you take.
- Turn off water supply and power or gas
- Drain the tank only if you know how
- Dry the area with fans or dehumidifiers
- Take photos for your records
- Call a plumber or appliance repair pro for an inspection
Water damage does not wait
Call (817) 799-6732 any time, day or night, and describe what happened.
Call Now (817) 799-6732Frequently asked questions
How long does a water heater last after water damage?
That depends on the extent of the damage and how quickly it was addressed. If only the exterior got wet and it was dried promptly, it may last its normal lifespan. But if the tank corroded inside, failure could happen within months. A pro can give you a better idea.
Can a flooded water heater be dried out and reused?
Sometimes, but only if the water was clean and the electrical or gas components are not compromised. A professional can dry the unit, replace damaged parts, and test it for safety. However, if the tank was submerged in floodwater, replacement is usually the safer choice.
Does home insurance cover water heater water damage?
Policies vary, and your insurer decides what is covered. Some policies cover sudden and accidental water damage, while others exclude flooding. Check your policy and talk to your insurance company about your specific situation. They can tell you if the repair or replacement is eligible.