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Best Water Heater Repair Companies in Tennessee Ranked
A sudden loss of hot water or a leak under your water heater can disrupt your entire household. Professional water heater repair is essential for restoring comfort and ensuring the safe operation of a major home appliance. Whether you have a gas or electric unit, understanding common problems and the repair process can help you make informed decisions. This guide provides a detailed look at water heater repair in Tennessee, helping you identify issues and connect with qualified local technicians to restore your hot water supply.

Mac Plumbing Heating & Air
2968 B, E Old Ashland City Rd, Clarksville, TN 37043
Mac Plumbing Heating & Air has been serving Clarksville and Montgomery County, including Nashville, TN, since 1991. They provide residential plumbing and heating and cooling services, specializing in water heater repair and installation as well as drain cleaning. With over 30 years of experience, they handle repair, replacement, and installation projects throughout the area.

Smith's Plumbing, Heating & Air
10545 US-64, Arlington, TN 38002
Smith's Plumbing, Heating & Air is a family-owned plumbing company serving Memphis, TN, and the surrounding area. Founded in 2010, they offer a wide range of plumbing services including water heater repair and installation, tankless water heater services, drain cleaning, sewer line repair, leak detection, and repiping. The company is known for its upfront pricing and 24/7 emergency availability, ensuring customers have access to help whenever needed. They also specialize in trenchless sewer repair, providing less invasive solutions for sewer line issues. With over 14 years of combined industry experience, Smith's Plumbing, Heating & Air brings professional expertise and community-focused service to their customers.

Bradley Maintenance & Air LLC
nashville
Bradley Maintenance & Air LLC provides HVAC and plumbing services in Nashville, TN, including water heater installation and repair. They serve the greater Nashville area, including Brentwood, Antioch, and Murfreesboro. The company offers comprehensive HVAC maintenance, repair, and system changeouts alongside their plumbing solutions.

Automatic Air Conditioning, Heating, Plumbing & Electric
3470 Tchulahoma Rd, Memphis, TN 38118
Automatic Air Conditioning, Heating, Plumbing & Electric has been serving Memphis, TN, and surrounding areas since 1943. The company offers a wide range of services including water heater repair and installation, HVAC, plumbing, and electrical work. They are experienced in handling all sizes of projects and provide 24/7 emergency service for air conditioning, plumbing, and electrical repairs. As a long-standing Carrier partner since 1956, they install and service units manufactured locally in Shelby County and support the local economy.

The Hot Water Heater Pros
1604 W Main St, Franklin, TN 37064
The Hot Water Heater Pros offers water heater repair, installation, and maintenance services in Nashville, TN. They specialize in both traditional tank water heaters and tankless models, providing expert advice on the right size and type for different household needs. Their services include installing energy-efficient units that may qualify for federal tax credits. The company emphasizes regular upkeep to extend the lifespan of water heaters.
Common Water Heater Problems in Tennessee Homes
Water heaters are workhorses that operate year-round, and over time, components can wear out or fail. The symptoms of a failing unit are often similar, but the root causes differ significantly between gas and electric models. Recognizing these signs early can prevent a minor repair from turning into a major replacement.
The most frequent complaints include a complete lack of hot water, insufficient hot water (especially noticeable during back-to-back showers), strange rumbling or popping noises, visible leaks, or rusty water coming from the taps. Each symptom points to specific components that may need attention, from simple thermostat adjustments to more complex part replacements 1 2 3 4.
Gas vs. Electric Water Heaters: Key Repair Differences
Understanding your water heater's fuel source is the first step in diagnosing a problem. The repair procedures, safety protocols, and common failure points are not the same for gas and electric units.
Gas Water Heaters use a burner assembly to heat the water. Common issues involve the pilot light, thermocouple (a safety device that shuts off gas if the pilot goes out), and the gas control valve. Repairs on gas units require specific expertise due to the inherent risks of working with natural gas or propane. Technicians must perform mandatory gas leak testing and ensure proper ventilation for combustion gases like carbon monoxide 1 5.
Electric Water Heaters use one or two submerged heating elements. Their typical problems are related to electrical components: tripped circuit breakers, failed heating elements, or faulty thermostats. While generally considered simpler to service, working on an electric water heater involves high-voltage electricity and requires the power to be safely disconnected at the breaker panel before any work begins 1 6 4.
The table below outlines how common symptoms often trace back to different causes depending on your unit type:
| Problem Symptom | Gas Water Heater Common Cause | Electric Water Heater Common Cause |
|---|---|---|
| No hot water | Pilot light out, faulty thermocouple, or gas control valve issue. | Tripped breaker, faulty heating element(s), or thermostat issue. |
| Not enough hot water | Undersized unit, burner issues, or sediment buildup. | Faulty lower or upper heating element or thermostat. |
| Strange noises | Rumbling/popping from sediment buildup at the tank's bottom. | Humming from a faulty heating element or popping from sediment. |
| Leaking | Leaks often at the drain valve, pressure relief valve, or connections. | Similar leak points as gas units; tank leaks usually mean replacement. |
| Rusty/discolored water | Tank corrosion (a sign of an aging unit). | Tank corrosion or a failing anode rod. |
The Professional Water Heater Repair Process
When you hire a licensed plumber in Tennessee for water heater repair, they follow a systematic process to ensure a safe and effective fix. This structured approach helps accurately diagnose the issue and prevent future problems.
- Diagnosis: The technician will first ask about the symptoms and then perform a thorough inspection. This includes checking the power source (breaker for electric, gas supply valve for gas), verifying thermostat settings, and testing specific components like the heating elements, thermocouple, or pressure relief valve 1 7.
- Safety First: This critical step varies by unit type. For gas heaters, the technician will check for proper ventilation and use a gas leak detector. For electric models, they will confirm power is off at the circuit breaker before opening any panels 8 1 9.
- Repair/Replacement: Using manufacturer-approved parts, the faulty component is replaced. This could be a thermostat, a heating element, a thermocouple, or a gas control valve. For leaks at valves or connections, seals and gaskets may be replaced 8 1 10.
- Testing: After reassembly, the unit is powered back on. The technician will verify that the repair is successful, check for proper operation and temperature, and ensure there are no leaks or gas odors (for gas units) 5 9.
- Cleanup & Maintenance Advice: A professional will clean up the work area and often provide recommendations to extend your water heater's life, such as scheduling regular tank flushing to combat sediment buildup, a common issue in areas with hard water 5 9.
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Understanding Repair Costs in Tennessee
The cost to repair a water heater in Tennessee depends on several factors: the specific problem, the price of the replacement parts, the labor rates in your area (which can vary between cities like Nashville, Memphis, Knoxville, and Chattanooga), and whether the unit is gas or electric. Simple fixes like relighting a pilot light may have a minimal service fee, while replacing a major component involves more labor and part costs 8 11.
Here is a general overview of common repair costs:
| Common Repair | Example Cost Range | Gas vs. Electric Considerations |
|---|---|---|
| Thermostat replacement | $150 - $250 | Similar cost for both types. Electric units have two, gas has one in the gas control valve. |
| Heating element replacement | $200 - $300 | Only for electric units. Gas units have a burner assembly instead. |
| Thermocouple replacement | $150 - $200 | Only for gas units; an inexpensive part with some labor involved in safe installation. |
| Gas control valve | $300 - $500 | Only for gas units; more complex and expensive part/labor than electric controls. |
| Flushing the tank | $100 - $350 | Recommended maintenance for both types to remove sediment. |
Note: These are estimated ranges. Always get a detailed, written estimate from your technician before authorizing repairs.
When to Repair vs. Replace Your Water Heater
Not every problem warrants a repair. Sometimes, replacement is the more prudent and cost-effective long-term decision. A reputable technician will help you weigh the pros and cons based on your specific situation.
Consider repair if:
- The water heater is less than 10 years old.
- The problem is isolated to a single, replaceable component (like a heating element or thermostat).
- The repair cost is less than half the price of a new unit installation.
Replacement is often recommended if:
- The tank is leaking. A leak from the tank body itself indicates corrosion and failure; it cannot be repaired 12.
- The unit is over 10-12 years old. As water heaters age, efficiency drops, and the likelihood of repeated failures increases. Investing in a new, more efficient model can save on energy bills 3 12.
- Repairs are becoming frequent. If you're calling for service often, you're likely spending more on repairs than a new unit would cost.
- You have rusty water. This can signal significant internal tank corrosion, even if it's not yet leaking.
Special Considerations for Tennessee Homeowners
Tennessee's climate and water conditions can impact water heaters. Areas with hard water are prone to accelerated sediment buildup, which reduces efficiency, causes noise, and can lead to overheating and tank damage. Regular flushing, as recommended by a technician during a service call, is particularly valuable here 5.
Furthermore, homeowners in flood-prone areas should be aware that water heaters exposed to flood waters pose serious safety risks. The Tennessee Department of Health and local authorities, like Nashville's Metro Public Health, provide strict guidelines, often requiring replacement rather than repair of flood-damaged units to avoid electrical hazards, gas leaks, and bacterial contamination 13.
Frequently asked questions
Sources
Footnotes
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Water Heater Repair: Gas vs. Electric - McQuillan Bros - https://mcquillanbros.com/blog/twin-cities-water-heater-woes-solved-gas-vs-electric-repair-differences/ ↩ ↩2 ↩3 ↩4 ↩5 ↩6
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Nashville Water Heater Repair & Installation - Jewell Mechanical - https://jewellmechanical.com/plumbing-services/water-heater-repair/ ↩
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Water Heater Replacement Vs. Repair: How to Make the Right Choice - https://magnificentplumbing.com/water-heater-replacement-or-repair-guide/ ↩ ↩2
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Gas Water Heaters vs. Electric Water Heaters | BWS Plumbing - https://bwsheatingandair.com/blog/deciding-between-gas-water-heaters-and-electric-water-heaters/ ↩ ↩2
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Water Heater Maintenance Near Troy, MI | Hot Water Heater Cleaning & Tune-Ups - https://www.callhoover.com/plumbing/water-heaters/maintenance/ ↩ ↩2 ↩3 ↩4
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Guide To Electric Water Heater Repair | Knoxville, TN - https://myplumbertn.com/guide-to-electric-water-heater-repair-knoxville-tn/ ↩
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What in Nashville to do when hot water suddenly stops working? - https://www.hoffmannbros.com/plumbing-tips/what-in-nashville-to-do-when-hot-water-suddenly-stops-working ↩
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How Much Does Water Heater Repair Cost in 2025 - https://magnificentplumbing.com/cost-to-repair-water-heater/ ↩ ↩2 ↩3
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5 Common Water Heater Problems And How To Fix Them - https://www.mrrooter.ca/vancouver/about-us/blog/5-common-water-heater-issues-and-how-to-fix-them/ ↩ ↩2 ↩3
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Water Heater Repair Cost 2026: Prices, Fix Types & Tips - https://modernize.com/plumbing/water-heaters/repair-cost ↩
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Water Heater Repair Knoxville TN - The Plumbing Authority - https://www.theplumbingauthority.com/water-heaters/water-heater-repair/ ↩
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Water Heater Repair vs. Replacement: What's the Right Choice? - https://www.crplumbingdfw.com/water-heater-repair-vs-replacement-how-to-decide-what-it-costs/ ↩ ↩2
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Guidelines for Repair of Water Heaters Exposed to Flood Waters - https://hub.nashville.gov/s/article/Guidelines-for-Repair-of-Water-Heaters-Exposed-to-Flood-Waters ↩