Water Heater Repair in Mableton, GA
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Cobb County winters put a real strain on your water heater
Cold groundwater in the winter months makes your water heater work harder to hit the same temperature at the tap. From November through April, with nights averaging 34°F, the burner or heating element runs longer and more often to keep up. That extra runtime wears on the thermostat and the heating element in electric units, or the burner assembly and thermocouple in gas ones.
Georgia also sees its share of power interruptions, with 31% of households going at least a day without power in 2024, and Cobb County has logged 70 damaging wind events over the past decade. If your water heater is electric, an outage means no hot water until the power is back. If it is gas with an electronic ignition, it may need to be relit by hand once power returns.
- 34°F
- the average winter night, and colder incoming water means longer heating
- 6 months
- November through April, the months homes here need heat
- 31%
- of Georgia households lost power for a day or more in 2024, and a heater with an electric element or electric ignition stops without it
NOAA nClimDiv, 1991–2020 normals
A new water heater would cut about $100 a year off hot water for a typical Georgia home.
Estimates for a typical Georgia home, compared with an older unit built to the federal minimum, from EIA household energy data and Georgia fuel prices. Your home will differ.
Repair makes sense when an element, thermostat or gas valve has failed.
Replacement makes sense when the tank itself is leaking.
- Why is my water heater leaking from the bottom?
- Most often the tank itself has rusted through and is cracked from the inside. Water heaters hold sediment at the bottom of the tank, and over years that sediment traps moisture against the steel until it corrodes. Once the tank is leaking there is no repair for it, the tank has to be replaced. A leak from the bottom can also be a loose drain valve or a fitting on the cold water line, and a contractor can tell the difference quickly by drying the area and watching where the water comes from first.
- Why won't the pilot light on my water heater stay lit?
- The most common cause is a worn thermocouple, the small sensor that tells the gas valve the pilot is burning. When it wears out it can't hold the valve open, so the flame goes out soon after you let go of the knob. A dirty pilot orifice or a draft near the burner compartment can cause the same problem. A contractor can test the thermocouple's reading in a few minutes and replace it if it's weak, which is a straightforward repair on most tanks.
- Can a tankless water heater be repaired?
- Yes, most tankless problems are repairable. A clogged inlet filter, a buildup of scale on the heat exchanger, or a failed igniter are all parts a contractor can clean or replace without swapping the whole unit. Scale buildup is worth watching for since it restricts flow through the narrow passages inside the heat exchanger over time. If the heat exchanger itself has cracked, that's usually the point where replacement makes more sense than repair, and a contractor can tell you which situation you're in after looking at it.