Kennesaw water heater problems usually come from one worn part, such as an element, a thermostat, an igniter or a valve, and a plumber can generally replace it in one trip. If the tank body leaks, a new heater is needed. Call the number on this page to be connected with a local plumber in Kennesaw.

Kennesaw sits beside Kennesaw Mountain, with Civil War and railroad history and housing mostly from the 1990s and 2000s. Census estimates put the median build year at 1998, with about 11% of homes built before 1980. Many original heaters from that era are now past their expected life. Atlanta Gas Light is the expected gas utility; your bill confirms it. Cobb County Water System serves the city, buying treated water from the Cobb County-Marietta Water Authority and disinfecting with free chlorine. Cobb owns the line to the meter; the owner is responsible from the meter in. Kennesaw Building Services enforces the 2024 International Plumbing Code with Georgia amendments, and all permits are applied for online.
What to do right now
- Gas smell first. If you smell gas, leave the house without touching switches, then call 911 and Atlanta Gas Light at 877.427.4321 from outside.
- Stop the water. Close the valve on the cold line feeding the top of the tank. For a large leak, shut the main at the meter.
- Cut the energy. Switch off the heater's breaker, or turn a gas control to off or pilot.
- Find the source. Note whether water comes from the relief pipe, the drain valve, a top fitting or the tank bottom.
- Read the label. Model, serial number and fuel help the plumber bring the right parts.
Signs and what they mean
| Symptom | Likely cause |
|---|---|
| Cold water at every hot tap | Element, thermostat, pilot or igniter |
| Short hot showers | Lower element, sediment, dip tube |
| Rumbling while heating | Sediment buildup |
| Relief valve dripping | Worn valve or pressure |
| Water under the tank | Drain valve, fittings or failed tank |
What affects the cost
- The part. Elements and thermostats are typical, simpler fixes.
- Age. On an original 1990s tank, a replacement may be the better value.
- Location. Attic installs take longer.
- Permit. Replacements go through Kennesaw's online iWorQ portal.
Many Kennesaw homes have the heater in a garage. Garage installs are easy to reach, but they sit in cold air through winter, so a tired tank works harder there. Insulating the nearby pipes and having the unit checked in fall can head off a January failure.
Water Heater Repair questions in Kennesaw
At what age does fixing a tank stop making sense?
Do I need a permit when a water heater gets replaced here?
Does chlorine in the local water shorten a heater's life?
The hot water used to last longer. What changed?
More plumbing services in Kennesaw
Water Heater Repair nearby
Helpful guides
Sources
- Kennesaw, Georgia (Wikipedia)
- Kennesaw housing by year built (ACS via Point2Homes)
- Cobb County Water System: water service
- Cobb County Water System water quality report
- Service line responsibility: Cobb County Water System
- City of Kennesaw Building Services Department
- Atlanta Gas Light: gas leak and emergency line
Last updated: