Cold showers are miserable, especially when you are not expecting them. One minute everything is fine, and the next, your water heater is not heating at all. Unfortunately, water heaters often fail without warning, leaving homeowners scrambling to figure out what went wrong.
In Murfreesboro and throughout Middle Tennessee, water heater problems are extremely common. Between daily use, hard water, and aging components, these systems take a lot of wear over time. Whether you have an electric or gas water heater, a sudden loss of hot water usually points to a specific issue that can be diagnosed with the right approach.
This guide walks you through the most common water heater problems for both electric and gas systems. You will learn what you can safely check yourself, what repairs may be possible, and when it is best to call a professional plumber. If your water heater is not working, start here.
Electric Water Heater Issues
Electric water heaters rely on electrical components to heat water efficiently. When one part fails, the entire system can stop producing hot water.
1. Tripped Circuit Breaker
If your electric water heater suddenly stops heating, the first thing to check is the breaker panel. Water heaters require a dedicated circuit, and if the breaker trips, the unit will not receive power.
Breakers typically trip due to electrical overload, faulty wiring, or a failing heating element pulling too much power. Open your electrical panel and look for a breaker labeled water heater. If it is tripped, reset it once.
If the breaker trips again shortly after resetting, do not continue resetting it. Repeated tripping usually indicates an underlying electrical issue or a failed heating element. At that point, it is best to call a professional to avoid damage or safety risks.
2. Faulty Heating Element
Electric water heaters use two heating elements, an upper and a lower element, to heat water inside the tank. If either one fails, you may experience little or no hot water.
A faulty upper element often results in no hot water at all. A failed lower element usually causes hot water to run out very quickly.
Heating elements can be tested with a multimeter to confirm whether they are working. While replacement is technically possible as a DIY project, it involves electrical work and draining the tank, which carries risk if done incorrectly.
For safety and proper installation, professional replacement is strongly recommended.
3. Broken Thermostat
The thermostat controls when the heating elements turn on and off. If it fails, the elements may never activate, leaving you with cold water.
Electric water heaters typically have two thermostats, one for each heating element. These can be tested with a multimeter to confirm proper function.
Temperature settings should generally be set to 120°F. Higher settings increase energy use and can create scalding risks.
Replacing a thermostat requires shutting off power and carefully reconnecting wiring. Many homeowners choose professional service to ensure safe and accurate installation.
Gas Water Heater Issues
Gas water heaters rely on a burner and pilot system to heat water. When something goes wrong, the issue often involves ignition or gas supply.
4. Pilot Light Out
If your gas water heater is not heating, check whether the pilot light is lit. Without a pilot flame, the burner cannot ignite.
Most units include instructions on the tank for relighting the pilot. Typically, this involves turning the gas control knob, pressing the igniter, and holding the reset button until the flame stays lit.
If the pilot will not stay lit, the thermocouple may be failing.
If you smell gas at any point, do not attempt to relight the pilot. Leave the area immediately and contact your gas utility company or 911.
5. Faulty Thermocouple
The thermocouple is a safety device that detects whether the pilot light is lit. If it senses no flame, it shuts off the gas supply to prevent leaks.
When a thermocouple fails, the pilot light will not stay lit even after relighting.
Replacing a thermocouple is moderately difficult and requires working near gas connections. While some homeowners attempt this repair, professional installation is recommended to ensure proper gas flow and safety.
6. Gas Supply Issues
If your pilot light is lit but the burner will not fire, the issue may be with the gas supply.
Check other gas appliances in your home to see if they are working. Make sure the gas valve to the water heater is fully open and positioned correctly.
If multiple appliances are affected or gas pressure seems low, contact your gas provider for further inspection.
Common Issues for Both Gas and Electric Water Heaters
Some water heater problems affect all system types, regardless of fuel source.
7. Sediment Buildup
Sediment buildup is one of the most common water heater problems in Tennessee due to hard water. Minerals settle at the bottom of the tank over time, reducing efficiency and usable hot water capacity.
Sediment acts as insulation between the heating source and the water, forcing the system to work harder and heat less effectively.
Flushing the tank removes sediment and restores efficiency. This involves draining the tank and flushing it with fresh water.
Annual flushing is one of the most important maintenance steps to extend the life of your water heater.
8. Age-Related Failure
Most traditional tank water heaters last between 8 and 12 years. As units age, internal components wear out and efficiency declines.
Frequent repairs, rising energy bills, and inconsistent hot water are signs that replacement may be more cost-effective than repair.
Tankless water heaters are an option for homeowners looking for improved efficiency and endless hot water. Professional evaluation can help determine the best solution for your home.
When to Call Airstream Services
Some water heater problems require immediate professional attention. Call for service if you experience gas leaks, plumbing issues, repeated breaker trips, or complete loss of hot water.
Professional help is also recommended for water heater installation, system replacement, and ongoing preventive maintenance. Addressing issues early can prevent emergency failures and water damage.
Frequently Asked Questions
Q: How long does a water heater last?
A: Most tank water heaters last 8 to 12 years with proper maintenance.
Q:Why does my hot water run out so quickly?
A: This is often caused by a failed lower heating element or heavy sediment buildup in the tank.
Q: Should I repair or replace my water heater?
A: If the unit is older and requires frequent repairs, replacement is often the better long-term investment.
Q:What size water heater do I need?
A: Sizing depends on household size, water usage, and appliance demand. A professional assessment ensures proper sizing.
Q:Are tankless water heaters better?
A: Tankless systems offer higher efficiency and unlimited hot water, but installation costs and home requirements vary.
Need Water Heater Repair in Murfreesboro?
Water heater troubles do not have to disrupt your day. Airstream Services’ licensed plumbers serve Murfreesboro and Middle Tennessee with same-day water heater repair, replacement, and installation. Call now to restore reliable hot water to your home.
