A failed tank needs a fast swap
A tank that has rusted through or burst a seam cannot be repaired. Shut the cold water supply valve, turn the gas control to pilot or the breaker off for an electric unit, and call the 24/7 line. We schedule same-day visits when a technician is free.
Put towels around the base and keep children and pets away from the water. If the floor is wet near an electric heater, do not touch the unit.
Signs the heater is past repair
Repair is smart for a small part. These signs mean replacement.
- Rust at the base or seamsOrange stains or wet corrosion on the tank body.
- Leak from the tank itselfA fitting leak is repairable. A body leak is not.
- Age beyond ten to twelve yearsMany tank units run in that range, and repairs add up.
- Rusty hot waterRust-colored hot water from the heater, not the cold, points to tank corrosion.
- Repeated repairsTwo repairs in a year is a pattern.
Repair or replace: a quick comparison
A short comparison helps in the moment.
| Situation | Repair | Replace |
|---|---|---|
| Dead igniter or thermostat on a young unit | Yes, simple part | No |
| Heater over ten years with leaks | No | Yes, see water heater installation |
| Heavy sediment, no leaks | Flush and test | If struggling and old |
| Corroded tank body | No | Yes |
See water heater repair for what can be fixed.
Hard water and replacement planning
Padre Dam Municipal Water District imports all of its supply, and its 2023 water quality report lists hardness of roughly 9 to 18 grains per gallon depending on the plant. That hardness is one reason tanks in the area collect sediment. When you replace, ask about a new anode rod plan and a drain valve you can reach for yearly flushing.
A water softener can reduce scale, and water softener and filtration covers the options. It is not required for a replacement.
How a replacement works
A swap usually takes part of a day.
- 1
Confirm size and fuel
The plumber matches capacity, fuel type and venting to the home.
- 2
Drain and remove
The old tank is drained and disconnected.
- 3
Set the new unit
Connections, expansion control where needed, drain pan and venting are set to code.
- 4
Test and haul away
The unit is fired, checked for leaks and safe operation, and the old tank leaves with us.
Planning the day of the swap
A replacement is smoother when the area is ready. Clear a path to the heater, move stored items away and make sure the plumber can reach the main water shutoff. If the unit is in a locked garage, leave a gate code or meet the plumber there.
Expect water to be off for part of the visit. The plumber will tell you how long and when hot water should return. After the new unit is fired, it takes a while to heat a full tank, so plan showers accordingly. The plumber shows you the shutoff valves, the relief valve and the drain valve before leaving.
What affects the cost of a replacement
Price varies with the unit and the install.
Water heater replacement questions
Yes, the 24/7 line is open. A failed tank gets priority, and we book same-day visits when a technician is available.
Most standard tank swaps take part of a day. Moving the heater or converting fuel takes longer.
Tankless has real advantages and real trade-offs. See tankless water heater to compare.
The City of Santee does not list water heaters on its page about work not requiring a permit. Ask Planning and Building for your case, because permit rules vary.
If it is not leaking, possibly. A leaking tank should be shut off right away.
Yes, removal is part of the visit.