Water Heater Repair or Replace? Seven Signs, Plus What a Permitted Los Angeles Replacement Must Include

Water heater repair or replace: how do you decide by symptom?

A leak at a fitting or a valve is a part problem. Water weeping through the steel is a tank problem, and no part fixes that. The seven signs below settle the water heater repair or replace question on nearly every call we take, from Tujunga to the Westside.

Seven water heater signs and the usual call

How long does a water heater last in Los Angeles hard water?

Plan on roughly a decade from a gas tank here, and treat anything past twelve years as borrowed time. That is a rule of thumb from our own jobs, and hard water pulls it toward the short end.

LADWP blends several sources, so hardness swings by neighborhood and month. In 1950s and 1960s Valley tract garages we find an inch of sediment on the tank bottom by year eight. That layer insulates the water from the burner, the steel overheats, and the tank ages faster. Our hard water guide covers the rest of the house.

Two habits stretch the number: a flush every year or two, and an anode rod check at mid-life. Once the rod is spent, the tank wall corrodes in its place. A softener ahead of the heater slows all of it; the choices are on our water filtration and softener installation page.

Age alone is not a verdict. A dry fourteen-year-old tank in a Sherman Oaks closet stays, under watch; a nine-year-old tank with rust at the seam comes out. Let the age decide how much a repair deserves, and let the symptoms make the final call.

Is a leak at the tank body different from a leak at a fitting?

Yes, and it is the most useful thing to check before you call anyone. A fitting leak is a part. A tank body leak means the inner steel has rusted through, and only a new water heater fixes that.

Dry the tank with a rag and watch. Water beading at a nipple, the T&P valve threads or the plastic drain valve comes from a joint. Water along the jacket seam, rust streaks down the outside, or a pool under the burner compartment means the shell.

Fitting leaks are honest repairs: a new T&P valve, a brass drain valve, or new flex connectors with dielectric fittings puts the tank back in service. A wall leak is different. The lining has cracked, the steel has rusted from the inside out, and the damp patch becomes a stream within weeks. A tank in that state can let go overnight after a month of one damp spot.

If the puddle comes from the tank itself, close the cold valve above the heater and turn the gas control to off. Call (818) 421-5290 for a written replacement estimate. Current ranges are on our water heater installation in Los Angeles page.

Pilot outages, popping, rumbling and rusty hot taps: which ones are fixable?

A dropped pilot, a popping tank and a rusty hot tap are three different problems. Only the first is a routine repair.

A pilot that will not stay lit is usually a thermocouple or flame sensor, a small part swapped in one visit. On newer sealed-burner tanks, a flame arrestor screen clogged with garage dryer lint or closet dust starves the pilot of air. If the pilot drops out again within months on a tank past ten years, the gas valve is tiring, and the tank goes with it.

Popping and rumbling come from water trapped under sediment flashing to steam. A flush helps a tank under eight years old; when the noise returns within weeks, the crust is past moving, and that tank is a replacement.

Rusty water on the hot side only points at the tank, since the cold side runs clear off the same supply. On a young tank, replace the anode rod first; on an old one, rust means the lining is gone, and the leak follows. If hot and cold both run brown, suspect galvanized pipe or a hydrant flush and call a Los Angeles plumber.

Do you need a permit to replace a water heater in Los Angeles?

Yes, with one exception for registered contractors. The City of Los Angeles requires a plumbing permit and a final inspection for a water heater replacement, including a like-for-like swap. The permit comes from LADBS, usually as an express permit filed online with no plan check.

Permits filed since January 1, 2026 fall under the 2026 Los Angeles codes, which adopt the 2025 California Plumbing Code with city amendments. The water heater rules changed little, so the checklist below is nothing new. The exception comes from the LADBS permit FAQ. A contractor registered in the city's Certified Licensed Contractor program may file a Certificate of Compliance with LADBS in place of a permit for a like-for-like swap in a detached single-family home: same gallons, BTU rating and vent capacity, with no vent relocation or replacement. The installation standard does not change.

A Los Angeles mailing address does not always mean LADBS. Burbank, Glendale and Pasadena run their own permit desks under the same California Plumbing Code rules. Unincorporated pockets such as La Crescenta go through Los Angeles County. Our permits guide walks through express permits and plan check.

Skipping the permit costs you later. Escrow asks for it, insurers lean on it after a water damage claim, and the LADWP heat pump rebate needs it.

What must a permitted Los Angeles replacement include?

Two seismic straps, a relief line outside, a drain pan, an expansion tank on a closed system, and a raised garage burner. That is the core of the LADBS final.

• Straps: two, in the upper and lower thirds, the lower one at least 4 inches above the controls. The LADBS bracing bulletin calls for 1/4 inch lag screws driven 1-1/2 inches into studs, with washers, and strap of at least 22 gauge by 3/4 inch. The same bulletin rules out plumber's tape on a tank over 40 gallons.
• T&P discharge: a full-size 3/4 inch line to the outside, ending 6 to 24 inches above grade, pointed down, no trap or threads on the end.
• Drain pan: at least 1-1/2 inches deep, with a 3/4 inch drain to an approved visible spot, wherever a leak would damage the floor.
• Expansion tank: required once a check valve or a regulator with a built-in check closes the system. Our water pressure regulator replacement page explains why.
• Garage: the burner 18 inches off the floor unless the unit carries a flammable-vapor ignition resistant listing. A bollard goes in where a car could reach the tank.
• Closet off a bedroom or bathroom: a gasketed, self-closing door and combustion air from outside, or a direct-vent unit.

The inspector also checks the flue draft, the gas flex and sediment trap, and the shutoffs. In 1950s and 1960s Valley tract garages the tank sits beside the car, so the stand and bollard come up on most visits. In a 1920s bungalow it hides in a hall closet too small to feed the burner.

Is a heat pump water heater worth it in a Los Angeles garage?

Often, yes, if the garage has air to spare and the panel has room for the 240-volt circuit most models need. It pulls heat from the garage air, which a mild LA climate supplies all year.

The 2025 California Energy Code, in force for permits filed since January 1, 2026, makes heat pumps the water heating baseline in new single-family homes, per the California Energy Commission. Replacing a gas tank with another gas tank in an existing home remains allowed. Regional air regulators considered a 2027 zero-emission water heater rule and voted it down in June 2025.

The ENERGY STAR installation guide wants roughly 700 cubic feet of air around the unit, or a louvered door or ducting to borrow it. It needs a condensate drain, and most models need a dedicated 240-volt circuit; a few plug-in 120-volt units exist, sized up from the old gas tank. It hums like a window air conditioner.

LADWP's Consumer Rebate Program covers ENERGY STAR heat pump water heaters of 30 gallons or more with a UEF of 3.3 or higher. The rebate rose for units installed on or after November 1, 2025. The application needs a paid itemized invoice, the spec sheet and a final approved Building and Safety permit, postmarked within twelve months of purchase. Amounts change, so we leave them off this page.

Can one licensed plumber handle the tank, the permit, the gas line and the circuit?

Yes, when the plumber also holds the electrical license. Most replacements touch the plumbing, the gas connection and, on a heat pump, electric or power-vent unit, a circuit.

A+ Electric & Plumbing is a licensed electrician and plumber serving Los Angeles and the San Fernando Valley, and the crew that straps your new tank also runs the 240-volt circuit most heat pump units need.

When an old flue fails the draft check, a Granada Hills gas tank becomes a power-vent unit, and a power vent needs an outlet. A tankless conversion usually needs a larger gas line, a pressure test on the new piping and a 120-volt outlet. Our tankless vs tank guide weighs that switch, and the tankless water heater installation page covers the install. With one license on the truck, nobody waits on a second contractor and nobody blames the other trade.

A written estimate costs nothing, the workmanship carries a one-year guarantee, and a live person picks up the phone at any hour. That is how one electrician and plumber in Los Angeles carries the tank, the permit and the circuit as a single job.

Frequently asked questions