In Coronado, a leaking tank, rusty hot water or an older heater that needs a major part usually means it's time to replace it. The City of Coronado's Building Services Division issues permits for same-location water heater and tankless change-outs over the counter by email, which keeps a straight swap simple. Call the number on this page to be connected with a local plumber in Coronado.
About Coronado
Coronado's water comes from California American Water under a contract with the city, and Cal Am buys treated water from the City of San Diego. It's chloraminated and moderately to very hard, with Cal Am listing 8.5 to 16.4 grains per gallon at the source plants. Add salt air from both the ocean and the bay and you have two forces working on a water heater: scale on the inside and corrosion on the outside.
What to do now
- If water is leaking, close the cold supply valve above the heater, or the main shutoff if that valve is stuck.
- Shut off the fuel: turn the gas control to off, or flip the breaker for an electric heater.
- If there's any gas smell, leave right away and call 911 and SDG&E at 1-800-611-7343 from outside.
- Protect floors and stored belongings, and open the garage or closet door to let the area dry.
- Photograph the label so the plumber knows the size, fuel and age.
- Ask whether the job can use the city's emailed permit for a same-location change-out.
Symptoms and what they usually mean
| Symptom | Likely cause |
|---|---|
| Rust on the jacket, burner door or vent cap | Salt-air corrosion, common on exterior or garage installs |
| Water at the base of the tank | Tank lining failure, or a leaking drain or relief valve |
| Popping or rumbling | Scale settled on the bottom of the tank |
| Rotten-egg odor from hot water | Anode rod reacting with the water; sometimes fixable with a different rod |
| Short hot water supply | Sediment buildup, a broken dip tube or a failed element |
What affects the cost
- Whether the heater stays in the same spot, which keeps permitting simple
- Tank versus tankless, and any venting or gas line changes
- Corrosion-resistant parts for coastal exposure
- Access in older homes, where heaters are often in tight closets
- Code items and disposal of the old unit
The Building Services Division, at 1825 Strand Way, also publishes a water heater handout; a plumber can tell you how it applies to your home. If the heater is moving to a new location, or you are changing fuel, expect more review than a same-spot swap, and plan the schedule around it. Homes near the water in Coronado Cays face the same salt exposure as those near the ocean, so the fitting choices above apply there too.
Water Heater Replacement questions in Coronado
Is a permit required to replace a water heater here?
Will a heater in the garage or outdoors hold up near the coast?
Should I replace my tank with a tankless unit?
What can I do to make the new heater last?
More plumbing services in Coronado
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