Lukewarm showers wreck a morning, but they seldom wreck a house. A tank spraying from its side, a garage floor under an inch of water, or a whiff of gas are different animals, and the first move for each is different too. The sections below separate the cases, name what to close, and explain how a rush job gets arranged. Routine repairs have their own page under water heater repair, and if you already know you need someone, send the details through the form.
Is a heater that quit entirely worth rushing for?
Not by itself. With no puddle and no gas odor, a dead heater can hold until a scheduled visit. The picture changes when water is escaping, when something smells scorched, or when a baby, an older relative or someone with a medical need depends on warm water at home.
Spend a minute on the cheap suspects first: a breaker that tripped on an electric model, or a gas pilot that has gone dark. Our page on a lit pilot with still no hot water covers what remains after those.
Which failures should be treated as same-day trouble?
Four situations qualify, and each carries its own danger. Water escaping the tank, a sulfur smell near a gas unit, a relief valve that will not stop discharging, and scorched wiring all justify calling right away instead of waiting for the next opening in your calendar.
- Water pouring from the shell or the base of the tank: flooding and mold follow.
- Gas smell (it resembles sulfur) near the appliance: fire risk.
- A relief valve running steadily, or a shell that groans and scalds your palm: pressure risk.
- Scorched wiring, or a breaker that trips again as soon as you reset it: shock and fire risk.
For the gas smell, get out first and phone from the sidewalk, touching no switches. Long Beach and Signal Hill customers dial Long Beach Energy Resources, (562) 570-2140. Households in neighboring Lakewood, San Pedro or Seal Beach are served by SoCalGas instead (1-800-427-2200). If a person could be hurt, 911 comes first. Do not try to seal a gas fitting yourself.
What should I close or switch off before anyone arrives?
Look for the handle on the supply pipe that enters the heater from above, and turn it clockwise. That ends the refill. Electric unit: kill its breaker, because an element that heats an emptying tank cooks itself. Gas unit: turn the gas dial to its off setting. Leave the building's main gas line alone unless you smell gas.
When that inlet valve is seized, close the main water shutoff to the house. A street-side break is a job for the city: Long Beach Utilities runs a water emergency line at (562) 570-2390. Meanwhile, sweep water toward a drain and carry valuables off the floor.
What happens during the visit itself?
First comes a diagnosis, then a written price, and work begins only after your yes. Thermostats, elements, thermocouples and valves can often be exchanged during that same visit. Rust-through at the tank shell cannot be mended, which turns the question into which replacement to buy.
Photograph the data plate on the tank before you call, since model, capacity and fuel type let the right part ride along. Attach them when you write in through the quote page. If you want to see which faults are fixable, anode rod work and our piece on a leaking tank draw the line.
Is a permit required when the swap is urgent?
Long Beach says a plumbing permit comes before any residential heater replacement. Mending a heater without unhooking it (vent work excluded) is exempt, so a new element or thermostat is not caught. The newcomer has to be strapped against shaking and carry a T&P relief valve.
Expect an approved shutoff on the gas outlet, ahead of the flex connector and within reach, plus a cold-water valve for future servicing. Haste changes none of it. A missing permit tends to surface at sale time or during a claim. The state strapping statute, HSC 19211, expressly includes replacement heaters.
When can someone really come, and is there 24-hour service?
You can reach us Mondays through Fridays, 9am to 5pm. No arrival window or night line is promised on this page. Treat any site announcing blanket round-the-clock availability with suspicion until it says who picks up. We note the problem, arrange a local plumber, and send you a written estimate.
Availability of the unit itself matters as much. Standard 40 and 50 gallon tanks are easy to source. Tankless models and awkward venting can mean an order and a wait, so ask what the stopgap is. Before choosing, read how tank and tankless differ.
How much do rush water heater jobs run?
Emergency plumbing guides quote labor at about $100 up to $500 an hour, with a national average near $170, frequently 1.5x to 3x the weekday figure. Tanks and parts are separate, and a full swap is normally one quoted figure.
Treat those numbers loosely; only the plumber can name the real one. You hold some of the lever: once water is off and the floor is dry, a next-business-day booking frequently beats a night callout on price. For whole-tank totals see what a replacement costs, and for other after-hours trouble see urgent plumbing help.
When only the washing machine runs cold, the heater is usually fine, and the washing machine no hot water guide explains why.
Common questions
Could a failing heater cause a fire or blast?
A tank that keeps heating with a stuck or absent relief valve can build real pressure, which is why that valve is mandatory. A plain leak is mostly a flooding and mold issue, but water near an electric unit's wiring can shock you. Cut power at the breaker before approaching the tank.
How many hours does an urgent replacement take?
Once the new tank is on site, a straight swap is typically half a day. Tankless conversions or moving the unit run longer. Inspection adds calendar time, so ask how the plumber schedules it and whether hot water is available while you wait for the inspector.
What about the heater itself once a leak has started?
No. Shut power or gas first, then the cold supply. A tank left heating as it empties damages itself, and a burner firing at a dry shell is a hazard. Do not restart anything until a plumber has looked, even if the leak appears to have stopped.
Every service and price guide is on Harbor Lights Plumbing.
References
- City of Long Beach, plumbing permit and water heater requirements
- City of Long Beach, permit questions
- California Health and Safety Code section 19211, water heater bracing
- Long Beach Utilities, gas
- SoCalGas, natural gas leaks
- Long Beach Utilities, water services and emergency contact
- Published emergency plumber rate guides, checked November 2026
Updated