Emergency Water Heater Repair in Columbia, SC
Cold showers, a pilot that will not stay lit and a puddle near the base each point to a different part. Check the breaker or pilot, then call if hot water does not return.
- 24/7 emergency calls
- Gas and electric
- Same-day parts swaps
What to do first when the water heater stops: four checks
Many no-heat calls end with one of these. None needs tools.
- Electric units: the breaker. Check the double-pole breaker, then press the red reset button on the upper thermostat panel.
- Gas units: the pilot or igniter. Look for a lit pilot or glowing igniter. If you smell gas, leave the house and follow the safety note below.
- The thermostat setting. A dial turned to vacation or a very low setting looks exactly like a failure.
- Other taps in the house. If only one fixture is cold, the heater may be fine and the fixture or mixing valve is the problem.
Gas smell? Leave first, then call 911 and Dominion Energy South Carolina at 800-815-0083. If your gas comes from another provider, use the number on your bill.
Symptom, likely cause, likely fix
The symptom usually narrows the cause quickly. A technician confirms it with a meter and a gauge.
| Symptom | Likely cause | Typical outcome |
|---|---|---|
| Lukewarm water | Failed lower heating element or a broken dip tube | Part replacement |
| Popping or rumbling | Sediment baked onto the tank bottom | Flush now, replace if old |
| Rust-colored hot water | Corroded tank or a spent anode rod | Usually replacement |
| Water at the base | A loose fitting or a failing tank | Fitting repair or replacement |
| Pilot keeps going out | Dirty thermocouple or a weak gas control | Part replacement |
Cold showers and a wet floor?
Shut off the cold supply to the tank, then call for water heater repair.
Parts that fail most often
Electric heaters lose elements and thermostats. Gas heaters lose thermocouples, igniters and gas control valves. Both types develop leaks at the drain valve and the temperature and pressure relief valve. Most of these are same-visit repairs when the part is in stock.
A repair makes sense on a young unit with a clear failure. If the tank is past ten years and leaking, a water heater replacement is the better use of money than another part.
Why Columbia water changes the diagnosis
Columbia Water treats with chloramine and reports soft water, about 1 to 2 grains per gallon. Scale is therefore a less common cause of failure for city customers than rust or worn rubber parts. Low-mineral water can wear down the anode rod faster, so an old rod is a real clue.
If you live in Cayce, West Columbia or Lexington, your utility is different. See Cayce for how that city's own water system changes the questions to ask.
Thermostat settings, scald safety and the relief valve
A water heater is commonly set to 120 degrees Fahrenheit. Higher settings raise scald risk, particularly for children and older adults, and lower settings can let bacteria grow in the tank. If your hot water is too hot or never hot enough, the thermostat is the first thing to confirm.
The temperature and pressure relief valve is a safety device. It is designed to open if the tank gets too hot or the pressure climbs too high. A valve that drips steadily may be failing, or it may be reacting to pressure from a closed system. Never cap it. The International Plumbing Code (IPC) requires relief valve discharge piping to end in a safe location. Have the valve tested and, if needed, replaced.
Sediment, flushing and what to expect from an older tank
Even soft water carries some sediment. A flush drains a few gallons from the bottom valve and clears loose debris, which can quiet a noisy tank and improve performance. On a unit older than ten years, a flush can sometimes dislodge buildup that was sealing a small leak, so we explain that risk before opening the drain.
If the drain valve is plastic and brittle, we may suggest replacing it with a brass valve first.
Gas water heaters, venting and carbon monoxide
A gas water heater vents combustion gases through a flue. If the flue is blocked, disconnected or poorly sloped, carbon monoxide can enter the house. Signs include soot around the draft hood, a pilot that keeps going out and a burner flame that is yellow and lazy instead of blue.
A carbon monoxide detector on each level is a separate safety layer. If it sounds, leave and call 911. A technician checks the vent on every gas heater visit.
Vacations, cold snaps and extended time away
If you will be away for a week or more, turn the thermostat down or set the unit to vacation mode, and close the supply if your heater is older. In a hard freeze, insulate exposed pipes and the cold supply line near the heater so a burst does not flood an empty house.
Gas heater repairs and the local rules
Dominion Energy South Carolina takes gas leak reports for many Columbia-area homes, and a repair that touches the vent or the gas line may need an inspection from your county or city. Lexington County subdivisions near Lake Murray and Richland County streets in Forest Acres can differ on who schedules that inspection, so ask before the work starts.
What usually fails, by symptom
On an electric heater, no hot water often means a tripped breaker, a failed heating element or a thermostat fault, and the high-limit reset button can trip when something else is wrong. On a gas heater, a pilot that will not stay lit often points to the thermocouple or a draft problem, and a gas control valve can fail outright.
Popping or rumbling is sediment baking on the tank bottom. Rust-colored hot water can mean the tank is corroding or the anode rod is spent. Water at the base is a different problem and usually ends in water heater replacement.
The safety rules we follow on every heater
The temperature and pressure relief valve must have a discharge pipe that runs to a safe location, and it should never be capped or plugged. A heater that keeps relieving pressure needs diagnosis, as that can signal thermal expansion or a failed thermostat.
If you smell gas, leave the house and call Dominion Energy at 800-815-0083 or 911 before anything else. Backdrafting and soot at a gas heater's vent are warnings too, as they can mean exhaust is not leaving the house. We shut the unit down and explain what is needed before relighting.
What to have ready when you call
Read the model and serial number off the label on the tank, and note whether the heater is gas or electric and where it sits. Say what you see, such as no hot water, lukewarm water, a leak or an odor, and how old the heater is.
Those details let dispatch bring likely parts, including elements, thermostats and valves, so the first visit can finish the repair.
Repairs around Five Points and across the river
Five Points began as the city's first neighborhood shopping district, and the Shandon houses around it are old enough that their heaters have usually been replaced once or twice. Mixed-age fittings and older gas connections make repairs there a matter of checking the connection before the part. An igniter or thermostat fix is quick, but corroded unions can turn a simple call into a longer one.
In West Columbia and Cayce, the same repair often involves a crawlspace unit where moisture attacks the burner compartment. Tell dispatch if your heater sits in a crawlspace so the first visit brings the right access gear.
What changes the price of a water heater repair
Repairs are priced by part and labor, and a few factors move the number.
Insurance generally covers sudden water damage but not the heater that wore out. The manufacturer warranty may cover parts on a newer unit, so keep the model and serial number handy.
Want your real number? Call (844) 981-1691 and mention the failed part and fuel type.
Where water heater repairs overlap with other jobs
A heater that keeps tripping the relief valve may have a pressure problem, which links to water line repair and the pressure at your meter. A tankless unit with error codes belongs on our tankless service page.
Water heater repair questions
Yes if water is spreading. Shut off the cold supply valve above the tank, switch off the power or gas control, and call.
Sediment trapped under the water layer boils and pops. A flush often helps, though an old tank may be near the end of its life.
Often, when the part is common. Gas control valves and some brand-specific parts may need an order.
Age and where it leaks decide most cases. A fitting leak on a six-year-old unit is a repair. A seam leak on a twelve-year-old tank is a replacement.