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Head's Plumbing Sales and Service, Inc.

Tankless Water Heater Repair & Service in Union City, GA

Experiencing issues with your tankless water heater in Union City, GA? Get expert repair and service for inconsistent hot water or strange noises.

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Accredited business

Family-Owned Since 1981

44 years • 3 generations

Georgia's Oldest Black-Owned Plumber

A community legacy

Licensed GA Master Plumber

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Is Your Union City Tankless Water Heater Struggling to Keep Up?

Is your tankless water heater in your Union City home delivering lukewarm showers instead of continuous hot water, or are you noticing strange banging and hissing sounds coming from the unit? These aren't just minor annoyances; they're clear signals that your system is struggling with issues like mineral buildup or a faulty heating element. When your home's hot water supply becomes unreliable, Head's Plumbing Sales and Service, Inc. is ready to provide the expert tankless water heater repair you need.

Warning Signs Your Tankless System Needs Service

A tankless water heater is designed for efficiency and convenience, but when problems arise, the signs are usually very clear. Paying attention to these symptoms can help you catch a small issue before it becomes a major failure.

Inconsistent Hot Water or Lukewarm Temperatures

You might notice your shower starts hot but quickly turns lukewarm, or the water never seems to get as hot as it used to. This is a classic symptom of mineral scale buildup inside the heat exchanger, a common problem with the water composition here in Union City. The scale acts as an insulator, preventing the unit from heating water efficiently.

Ignoring this leads to ongoing discomfort and higher energy bills. Eventually, severe scale buildup can permanently damage the heat exchanger, forcing a costly replacement of the entire unit.

Strange Noises Coming from the Unit

If you hear banging, popping, or hissing sounds when your water heater is running, it's often caused by sediment and mineral deposits. As the water heats up, these deposits can expand and rattle around inside the heat exchanger.

These sounds mean the system is under stress. Left unaddressed, the internal components will suffer accelerated wear and tear, leading to leaks, reduced efficiency, and eventual component failure.

Reduced Water Flow or Pressure

Does the hot water from your faucets seem weaker than the cold water? This usually points to a blockage inside the tankless unit, most likely from mineral scale or sediment clogging the inlet filter or heat exchanger.

This restriction puts extra strain on your plumbing system. It also means your unit isn't performing as it should, wasting energy and potentially leading to a complete shutdown of your hot water supply.

Error Codes on the Digital Display

Your unit's digital display showing an error code is its way of telling you something is wrong. These codes can signal anything from a clogged vent to a failed flow sensor or a problem with the gas supply.

Here in Georgia, power fluctuations from frequent thunderstorms can sometimes damage the sensitive electronics in these units, triggering an error. An error code means a critical component isn't working, and ignoring it can lead to further damage or even create a safety hazard.

Visible Leaks Around the Unit

Any sign of water—drips, puddles, or corrosion—around your tankless water heater requires immediate attention. Leaks can come from loose fittings, worn-out gaskets, or even a crack in the heat exchanger.

Even a small leak can cause significant water damage to your floors, walls, and home structure. It's a clear sign of a problem that will only get worse, potentially leading to a complete unit failure.

What's Causing the Problem with Your Tankless Heater?

Understanding the root cause of the issue is the first step toward a lasting solution. In our experience with homes in the Union City area, problems with tankless units usually trace back to one of a few common culprits.

Mineral Scale Buildup in the Heat Exchanger

The water supply in our area contains minerals like calcium and magnesium that, over time, stick to the inside of your unit's heat exchanger. This creates a hard, crusty layer that prevents the system from properly heating your water. The primary solution is a professional descaling service, where we circulate a solution through the unit to dissolve these deposits and restore performance.

Lack of Regular Maintenance and Flushing

Tankless water heaters need an annual service appointment to stay in top condition, which includes flushing the system to prevent mineral buildup. Many homeowners aren't aware of this crucial maintenance step, especially when they first switch to a tankless system. A comprehensive annual checkup is the best way to prevent most common failures and extend the life of your unit.

Faulty Components (Igniter, Flow Sensor, Thermistor)

Like any appliance, the internal parts of a tankless water heater can wear out or fail. Components like the igniter, flow sensor, and electronic circuit boards are particularly sensitive. Power surges from local storms can sometimes damage these electronics, causing the unit to stop working without warning. The solution involves a professional diagnosis to pinpoint the failed part and replace it correctly.

Improper Installation or Sizing

If a tankless unit wasn't correctly sized for your home's needs or installed improperly, it will never work right. In some older Union City homes that have been retrofitted, the existing gas or vent lines may not be adequate for the new system. This requires a thorough inspection to identify and correct any installation-related issues, ensuring the unit operates safely and efficiently.

What to Expect During Your Service Visit

When Head's Plumbing Sales and Service, Inc. arrives at your Union City home, you can expect a professional and transparent process from start to finish. Our licensed plumber will begin with a comprehensive diagnostic assessment of your tankless water heater, checking for error codes, inspecting all connections, and testing flow and temperature output. We believe in educating our customers, so we’ll take the time to explain our findings in clear terms.

We’ll detail what’s causing the problem and present you with the best options for a long-term solution, not just a temporary fix. Whether your unit needs a professional descaling to remove stubborn mineral buildup, a new flow sensor, or an adjustment to the gas line, we use high-quality parts and proven techniques. Our family has been serving this community for generations, and we bring that commitment to every job.

Related Services You May Need

Properly maintaining all your home's plumbing systems is key to your comfort and safety. If your tankless water heater is older or facing a major repair, you might consider our Water Heater Installation & Replacement services to upgrade to a newer, more efficient model. To ensure your entire plumbing system is working correctly, you can also ask about our expert Drain Cleaning Services to prevent backups and maintain strong water pressure throughout your Union City home.

Why This Matters: The Cost of Waiting

Delaying a tankless water heater repair can turn a small, fixable issue into a much larger and more expensive problem. An inefficient unit will drive up your energy bills as it struggles to heat your water, costing you money every month.

Ignoring warning signs like strange noises or error codes can lead to cascading failures of other components, potentially resulting in the need for a complete unit replacement. Most importantly, certain malfunctions related to gas or electrical components can pose a safety risk to your family. Addressing the problem promptly protects your investment, restores your comfort, and ensures your home remains safe.

Your Trusted Partner for Tankless Water Heater Repair

When your tankless water heater needs expert attention in Union City, trust the multi-generational experience and professional standards of our team. We are dedicated to providing honest solutions and high-quality workmanship to protect the comfort and safety of your home. Reach out to Head's Plumbing Sales and Service, Inc. through our website to schedule your service.

Water heater check

Water heater acting up? Repair or replace?

Answer three quick questions for a ballpark recommendation. It's a guide, not a quote — your technician confirms the right call on site.

10 years
New25+ yrs
What type?
What's the main symptom?
Our recommendation
Likely repairable

No hot water is most often a failed element or thermostat (electric), or a pilot/igniter issue (gas) — repairable parts on a unit this age. We'd confirm the exact failure and fix it.

Typical ballpark
Tank repair
$150–$700

Ballpark only — actual cost varies by unit, fuel type, code upgrades, and site conditions. We give you an exact, up-front quote before any work.

Ready to Get Started?

Contact us today for a written estimate — dispatch fee applies and is waived when you approve the work. Our licensed professionals are ready to help.

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