Smyrna, GA Water Heater Not Heating? 5 Fixes

Estimated Read Time: 12 minutes

No hot water is more than an inconvenience. It can derail your morning and spike energy costs. If your water heater is not heating, this guide walks you through the five most common causes, safe DIY checks, and when to call a pro. As a bonus, Atlanta Star Plumbing offers same-day service and member perks that prevent surprise breakdowns.

Quick Safety Checklist Before You Start

• If you smell gas or see active leaking, shut off the gas or water supply and call a professional immediately.
• Turn off power at the breaker before opening any electric panels.
• Keep the water heater thermostat near 120 F for safety and efficiency.

1) Tripped Breaker or Power Supply Issue

Electric water heaters stop heating when they lose power. A tripped breaker, a blown fuse, or a loose connection at the disconnect can halt heating without other warning signs.

What you can check now:

1. Inspect the water heater’s dedicated breaker. Reset it once if it is tripped.
2. Confirm the service disconnect near the heater is in the ON position.
3. Check for a GFCI outlet upstream that may have tripped. Press reset.

When to call a pro:

• The breaker trips again after reset.
• Burnt wiring smells or scorched terminals.
• You have partial power or intermittent hot water.

How we fix it:

• Verify correct amperage and tighten terminations.
• Test voltage at the elements and thermostat.
• Replace failed disconnects or breakers when needed.

Local insight: Short power blips during summer storms around Atlanta can trip aging breakers and leave a tank cold until reset.

2) Thermostat Set Wrong or Failed

Both gas and electric units rely on accurate control. A mis-set thermostat wastes energy and causes lukewarm water. A failed control can leave the tank cold or overheat, which is unsafe.

What you can check now:

1. Set the thermostat to 120 F. On many gas tanks, that is near the “hot” mark.
2. Give the tank 45 to 60 minutes to recover after adjustment.
3. If you have two electric elements, the upper thermostat controls power to the lower. If the upper fails, no hot water will be produced.

When to call a pro:

• Water is always cold or rapidly fluctuates.
• You see burn marks on the access panel or smell scorching.

How we fix it:

• Test upper and lower thermostats and safety cutoffs.
• Calibrate or replace the control and verify wiring.
• Confirm the temperature-pressure relief (T&P) valve is operating safely.

Fact to know: The Department of Energy recommends 120 F to reduce scald risk and energy use while inhibiting mineral scale.

3) Pilot Light Out or Ignition Failure (Gas Models)

No flame means no heat. A draft, dirty flame sensor, bad igniter, or faulty gas control valve can stop ignition. Modern tanks use spark or hot-surface igniters rather than standing pilots.

What you can check now:

1. Look through the sight glass. Is the flame lit and steady blue with small yellow tips?
2. Follow the manufacturer’s lighting instructions if the pilot is out.
3. Make sure the gas valve is fully open.

When to call a pro:

• Pilot will not stay lit.
• Repeated ignition clicks with no flame.
• You smell gas or see soot.

How we fix it:

• Clean the flame sensor and burner assembly.
• Test the igniter and gas valve voltages.
• Correct venting issues and adjust gas pressure to spec.

Hard fact: Atlanta Star Plumbing inspects soot buildup on burners or heat exchangers and checks thermocouplers or ignition parts for safe operation.

4) Sediment Buildup and Scale Inside the Tank

Mineral sediment settles at the bottom of tanks and blankets the heating surface. This creates popping noises, slow recovery, and higher energy bills. Left alone, it can overheat the tank bottom and shorten its life.

What you can check now:

1. Listen for rumbling or popping as the unit heats.
2. Drain a gallon from the drain valve to see if water is rusty or gritty.

When to call a pro:

• The drain valve clogs or will not close fully.
• You have heavy scale or discolored water.

How we fix it:

• Perform a controlled flush to remove buildup.
• Inspect the anode rod and replace if depleted.
• For gas units, clean the combustion chamber. For electric, verify element health after descaling.

Hard fact: Our Diamond Club includes annual flushing and a 200+ point inspection to catch problems before they become emergencies.

5) Failed Heating Element or Sensor (Electric) / Failed Thermocouple or Gas Valve (Gas)

Wear parts eventually fail. Electric elements and thermostats commonly fail after years of cycling. Gas models can suffer from bad thermocouples, dirty sensors, or failing gas valves.

What you can check now:

1. If the top of the tank gets slightly warm but no hot water is delivered, suspect an upper element or control issue.
2. If water gets warm then turns cold fast, the lower element may be bad.

When to call a pro:

• No hot water after power checks.
• You notice leaks at element gaskets.
• Gas valve error codes or lockouts appear.

How we fix it:

• Ohm-test elements and replace only what is needed.
• Replace failed thermostats or thermocouples and test safeties.
• Verify recovery times and run temperature checks at nearby fixtures.

Extra Causes Worth Checking

• T&P valve discharge or expansion tank failure: A failed expansion tank can stress your system after cold snaps. We replace faulty tanks and reset system pressures.
• Water pressure problems: High or fluctuating pressure can trigger leaks and shorten heater life. Atlanta Star Plumbing checks water pressure on every visit.
• Tankless sizing or maintenance: Incorrect sizing or a scaled heat exchanger causes temperature swings. We descale, set flow rates, and right-size replacements when needed.

DIY vs Professional: How to Decide

Do it yourself safely when:

1. You are resetting a breaker or GFCI.
2. You are relighting a pilot according to the label.
3. You are adjusting the thermostat to 120 F.

Call a pro when:

1. There is gas smell, active leaking, or scorching.
2. Breakers trip again after reset.
3. You suspect a failed control, element, or gas valve.

What you gain with a professional visit:

• Same-day diagnostics with fully stocked trucks that handle most fixes on the spot.
• A full safety check that includes burner inspection, venting, anode evaluation, and T&P verification.
• Clear options for repair vs replacement with transparent pricing.

Repair or Replace? A Simple Rule of Thumb

Consider replacement if:

1. The tank is 10 years or older with repeated issues.
2. There is a tank leak or advanced corrosion.
3. You want lower energy costs with a high-efficiency model or tankless upgrade.

Consider repair if:

1. The water heater is under 8 years and has a single failed part.
2. There is no tank leakage and the costs are modest.
3. You maintain the unit and water quality is stable.

Pro tip: Many homeowners in Atlanta choose a same-day tank replacement to restore hot water quickly, then join the Diamond Club to maintain the new unit and extend its life.

Special Offers for Atlanta Homeowners

• Save $100 on water heater replacement. Mention “$100 OFF Water Heater Replacement” when you book. Expires 2025-12-31. Offers cannot be combined.
• First-time customer? Save $25 on water heater services. Mention “$25 OFF First-Time Customer.” Expires 2025-12-03. Not valid on service fee. One coupon per visit.

Call 404-777-4245 or schedule at www.atlantastarplumbing.com to claim your savings.

What Homeowners Are Saying

"Atlanta Star Plumbing did a great job replacing my water heater. Would definitely recommend"
–Nathan D., Water Heater Replacement

"Britt was great! Friendly and helpful, he was able to come on a Saturday to quickly replace my water heater"
–Aimee G., Water Heater Replacement

"He located the problem, let me know what he found and then very quickly fixed my hot water heater concerns. I was impressed with the service and honesty."
–Sylvia E., Water Heater Repair

"We were out of town... Brad found the problem, had the parts, stopped the leak, and put in a new expansion tank for the water heater. He was so polite and professional."
–Beth S., Emergency Service

Frequently Asked Questions

Why is my water heater not heating after a storm?

Power blips can trip breakers or control boards. Check the breaker and reset once. If it trips again or you smell burning, call a pro for diagnostics.

What temperature should my water heater be set to?

120 F is recommended for safety and efficiency. It reduces scald risk, cuts energy use, and limits mineral scale. Higher temperatures increase risk and energy costs.

How often should a water heater be flushed?

Once per year for most homes. Heavy sediment areas may need more. Our Diamond Club includes an annual flush plus a full 200+ point plumbing inspection.

How long does it take to get hot water after adjusting the thermostat?

Most tanks need 45 to 60 minutes to recover. Larger tanks or full households may take longer. If there is no change, a thermostat or element may be faulty.

Should I repair or replace my old water heater?

If the tank leaks or is 10 years old with recurring issues, replacement is usually best. If it is younger and the issue is a single component, repair often makes sense.

In Summary

If your water heater is not heating, start with safe checks on power, thermostat settings, and ignition. Sediment and worn parts are common culprits. For fast, expert help in Atlanta, call Atlanta Star Plumbing. We offer same-day repairs, the Diamond Club for preventive maintenance, and a 100% satisfaction guarantee.

Ready for hot water again? Call 404-777-4245 or book at www.atlantastarplumbing.com.

Get Hot Water Back Today

• Call now: 404-777-4245
• Schedule online: www.atlantastarplumbing.com
• Mention our current offers: $100 OFF water heater replacement or $25 OFF for first-time customers.

Prefer preventive peace of mind? Ask about our Diamond Club with a 200+ point annual inspection, member discounts, extended warranties, reduced fees, and priority emergency service.

About Atlanta Star Plumbing

Atlanta Star Plumbing is a family-owned team serving Metro Atlanta with fast, reliable plumbing. We back every repair and replacement with a 100% satisfaction guarantee. Our licensed, background-checked technicians arrive in fully stocked trucks for same-day fixes when possible. Members of our Diamond Club receive a 200+ point annual inspection, priority scheduling, extended warranties, and exclusive discounts. From standard tanks to tankless systems, we deliver expert diagnostics, clean work, and clear pricing.