Lexington water heaters most often fail at a single part: a burned-out electric element, a worn thermocouple or a sticking gas valve, and a plumber can usually replace it. Because the City of Lexington runs its own gas system, questions about the gas supply to a heater go to the City utility rather than Piedmont. Call the number on this page to be connected with a local plumber in Lexington.
What sets Lexington apart
Unlike most of its neighbors, Lexington owns its gas mains. The City operates water, sewer, electric and natural gas systems, and its gas service reaches customers beyond the city limits in Davidson County. For a gas water heater, that means the utility behind the meter is usually the City, and a gas odor should be reported to 911 or the City's gas utility from outside the house, never from beside the tank.
The housing is old by local standards. The median Lexington home was built in 1969, about 68% predate 1980 and roughly 14% go back before 1940. Older houses tend to have heaters squeezed into closets or back porches turned utility rooms, with flue pipe and gas connectors that may be due for an update whenever the heater is serviced.
Water comes from Lake Thom-A-Lex and is treated with chlorine; the City's 2025 report lists a running average of 0.79 ppm and no violations. It does not report hardness, so the practical way to judge sediment is to drain a few gallons from the tank and look.
Repair or replace at a glance
| Situation | Usually a repair | Usually a replacement |
|---|---|---|
| No heat from an electric tank | Element, thermostat or high-limit switch | Repeat failures on a tank past its expected life |
| Gas burner won't stay lit | Thermocouple, flame sensor or igniter | Rusted combustion chamber or failed valve on an old unit |
| Water on the floor | Drain valve, relief valve or a fitting | Leak from the tank body |
| Rusty hot water | Spent anode rod on a younger tank | Rust from inside a tank well over ten years old |
If replacement wins, Lexington takes plumbing permit applications through the online Permit Portal run by its Business & Community Development department.
Signs to act on
- Hot water that fades faster than it used to
- Popping or rumbling while the burner or elements cycle
- A pilot that keeps going out
- Moisture under the tank or along the hot and cold connections
Seasonal timing
Water heaters work hardest in January and February, when the incoming water is coldest and the tank takes longer to recover. A heater that was borderline in October often quits during a cold snap. Fall is a sensible time to have a plumber check the burner, flue draft and relief valve and flush out sediment, ahead of the busy winter weeks.
Water Heater Repair questions in Lexington
Which utility supplies the gas for a gas water heater here?
Why won't the pilot on my gas water heater stay lit?
How often should sediment be flushed out of a tank water heater?
Is a permit needed if the water heater has to be replaced instead of repaired?
More plumbing services in Lexington
Water Heater Repair nearby
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