Short answer: Tank heaters typically last 6 to 15 years and tankless 20 years or more with maintenance. A tank that is leaking from the body cannot be repaired and needs replacing; a pilot, burner, element or thermostat problem usually can be fixed.
If your water heater is leaking
- Turn off the power or gas. Electric: switch off the water heater breaker. Gas: turn the control knob to off or pilot.
- Close the cold water inlet valve on the pipe going into the top of the tank.
- Find where the water is coming from. A drip from the relief valve discharge pipe, a loose fitting on top, or the drain valve near the bottom may be repairable. Water seeping from the bottom of the tank itself usually means the tank has failed.
- Drain it if needed. If the tank is leaking badly and there is a floor drain or a safe place to run a garden hose, you can drain the tank from the valve at the bottom. Be careful: the water may be scalding.
- Call us. Tanks in attics, upstairs closets and finished basements can do serious damage, so treat those as urgent.
If you smell gas near a gas water heater, leave the house and call Atlanta Gas Light at 877-427-4321 or 911 from outside. Do not flip switches or try to relight anything.
Common water heater problems and what they usually mean
| What you notice | Likely cause | Usually |
|---|---|---|
| No hot water, gas unit | Pilot out, failed thermocouple or flame sensor, gas valve issue | Repair |
| No hot water, electric unit | Tripped breaker, tripped high limit, failed element or thermostat | Repair |
| Hot water runs out fast | Failed lower element, broken dip tube, sediment, or a tank too small for the household | Repair or resize |
| Popping or rumbling | Sediment on the bottom of the tank | Flush; replace if severe on an old tank |
| Rotten egg smell from hot water | Reaction between bacteria in the tank and the anode rod | Flush and anode change |
| Rusty hot water only | Corrosion inside the tank, anode used up | Often replace if the tank is older |
| Relief valve dripping | High pressure, high temperature, thermal expansion or a worn valve | Diagnose; often an expansion tank or new valve |
| Water at the base of the tank | Tank failure, or a leaking fitting above dripping down | Replace if the tank body is leaking |
| Tankless error code or cold water sandwich | Scale, flow sensor, ignition or venting issue | Descale or repair |
Repair or replace?
We look at four things:
- Age. The manufacture date is coded in the serial number on the label. HomeAdvisor gives tank heaters a lifespan of about 6 to 15 years. A tank past 10 to 12 years with a major problem is usually a replacement.
- The failed part. Thermocouples, igniters, elements, thermostats, anode rods and valves are replaceable. A leaking tank is not.
- How much life is left. A major repair on an aging tank often just delays a replacement that is coming anyway.
- How well it fits your household. If you run out of hot water every morning, a repair keeps the problem; a right-sized replacement fixes it.
We will tell you plainly if a repair makes sense. You do not need a new water heater because one small part failed.
A real person answers 24 hours a day and tells you what to do first, before anyone comes out.
Signs a water heater is near the end of its life
- It is past 10 to 12 years old, based on the date coded in the serial number
- Rust colored water comes from hot taps only
- Rust or corrosion on the tank jacket, fittings or the bottom of the tank
- Loud popping or rumbling that flushing no longer fixes
- Moisture or small puddles around the base
- Hot water that runs out faster every month
- The relief valve has started to drip regularly
One sign on a younger heater is usually a repair. Several signs on an older tank mean it is time to plan a replacement before it fails on its own schedule.
Tank, tankless or heat pump?
Standard tank (gas or electric)
- Simplest and fastest replacement, often same or next day
- Common sizes are 40 and 50 gallons; larger households may need more
- Limited by the size of the tank: when it runs out, you wait for recovery
Tankless (on demand)
- Endless hot water within the unit's flow rating
- Wall mounted, frees up closet or garage space
- Gas units often need a larger gas line and new venting
- Needs periodic descaling to keep running well
- HomeAdvisor gives tankless a lifespan of 20 years or more with proper care
Heat pump water heater (hybrid electric)
- Uses much less electricity than a standard electric tank
- Needs space and airflow around it; works well in a garage or large utility room
- Larger unit than a standard electric tank
- The U.S. Department of Energy finalized water heater efficiency standards in April 2024, scheduled for 2029, that would push the most common sizes of new electric tanks toward heat pump technology; federal efficiency rules have been under review since, so ask what applies when you buy
Sizing a water heater for your home
For a tank, the number that matters is the first hour rating on the yellow label, which is how much hot water it can deliver in a busy hour. A household that takes three showers back to back in the morning while the dishwasher runs needs a higher first hour rating than a couple who shower at different times. For tankless, the number that matters is the flow rate in gallons per minute at the temperature rise you need. Groundwater in north Georgia is cold in winter, so a tankless unit has to work harder in January than in July. We size for winter.
What a code compliant installation includes
- Temperature and pressure relief valve with a discharge pipe routed to a safe location
- Drain pan with a drain line where the heater sits in an attic, upstairs closet or above finished space
- Expansion tank where the plumbing system is closed, for example by a check valve or pressure reducing valve
- Proper venting for gas units, sized and pitched correctly
- Gas line sizing and sediment trap for gas units
- Dedicated circuit of the right size for electric units
- Seismic or securing straps where required, and safe clearances to combustibles
- Permit and inspection where required
- Haul away of the old unit
Ask any installer whether the job includes the permit, expansion tank, pan, new valves and haul away. A complete installation covers all of them.
Water heater maintenance that actually helps
- Flush the tank once a year to remove sediment, which keeps the burner or elements efficient and quiet.
- Check the anode rod every few years. Replacing a worn anode can extend the life of a tank.
- Test the relief valve by lifting the lever briefly; replace it if it does not reseat or keeps dripping.
- Descale tankless units on the schedule the manufacturer recommends.
- Set the temperature around 120°F to reduce scald risk and energy use, unless someone in the home needs it hotter for a medical or appliance reason.
- Keep the area clear. Gas units need combustion air; do not store paint, gasoline or laundry against them.
Gas or electric: what fits your home
If your home already has natural gas and a properly vented gas water heater, replacing like for like is usually the simplest path. Switching from electric to gas means running a gas line and adding venting; switching from gas to electric may need a new circuit. In Georgia, natural gas is delivered by Atlanta Gas Light, and you buy the gas itself from a certified marketer.
Warranties and what they really cover
- Tank warranty: usually covers the tank against leaks for a set number of years. Longer warranties often mean a heavier anode rod and better parts.
- Parts warranty: covers components like the gas valve, elements and thermostats, often for a shorter term.
- Labor warranty: the manufacturer usually does not pay for labor. Ask your installer what labor warranty they offer.
- Registration: some manufacturers require you to register the unit to get the full warranty term. Do it the week it is installed.
- Proper installation: warranties can be voided by an improper installation, missing relief valve discharge piping, or a unit installed outdoors that was not rated for it.
Water heater safety signs you should not ignore
- Gas smell near the unit: leave and call Atlanta Gas Light at 877-427-4321.
- Scorch marks or soot around the burner access or draft hood, which can mean a venting problem.
- Relief valve discharging hot water or steam: turn off the power or gas and call.
- Carbon monoxide alarm sounding: get everyone outside and call 911.
- Water near electrical connections on an electric unit: switch off the breaker if you can reach it safely.
Waiting forever for hot water?
If it takes a long time for hot water to reach a far bathroom, the water heater may be fine; the hot water is simply cooling in a long pipe run. Options include:
- A recirculation pump that keeps hot water moving through the line, on a timer or on demand, so hot water arrives in seconds.
- A point-of-use heater under a distant sink for a bathroom or kitchen far from the main heater.
- Insulating hot water pipes in crawl spaces, basements and attics so less heat is lost on the way.
- Relocating the heater closer to where most hot water is used during a replacement, though relocation adds work.
If hot water arrives quickly but runs out fast, that is a different problem: a failed element, a broken dip tube, heavy sediment or a tank too small for your household. A plumber can tell the difference in one visit.
Where water heaters sit in Smyrna homes
Location changes the job. Older ranches in Bennett Woods and Cheney Woods often have the heater in a basement, crawl space or garage, which makes replacement straightforward. Many townhomes and condos near Cumberland and The Battery and in Vinings have heaters in interior closets or attics, where a failed tank can damage ceilings below or a neighbor's unit. In those homes, a pan with a drain line and a leak sensor are simple insurance, and replacement on age rather than waiting for failure is worth considering.
Water heater service across Smyrna
We repair and install water heaters throughout Smyrna and nearby, including Market Village and Williams Park, Forest Hills, Belmont Hills and King Springs and Mableton and Riverview. See all service areas.
More plumbing services in Smyrna
- Emergency plumber in Smyrna: 24/7 burst pipes, no water, backups and leaks.
- Drain cleaning in Smyrna: Clogged sinks, tubs, toilets and main line backups.
- Leak detection & slab leaks in Smyrna: Hidden leaks in walls, slabs and yard lines.
- Pipe repair & repiping in Smyrna: Burst pipes, polybutylene and galvanized replacement.
- Sewer line repair in Smyrna: Camera inspection, roots, breaks and replacement.
- Water line repair in Smyrna: Main service line from the meter to the house.
- Toilet & faucet repair in Smyrna: Running toilets, drips, fixtures and disposals.
Helpful Smyrna plumbing guides
Neighborhoods we serve
Licensed plumbers for homes in Market Village & Williams Park, Forest Hills, Bennett Woods & Cooper Lake, Cheney Woods & Smyrna Heights, Belmont Hills & King Springs, Vinings, Cumberland & The Battery, Mableton & Riverview. See every Smyrna service area or contact us.
Sources
Written and reviewed by Alex, a Smyrna local with an MBA who researches and edits every page on this site, citing official and published sources. Updated October 25, 2026.
Plumbing work is performed by independent, licensed Georgia plumbers. General information, not legal or insurance advice.