Why is my water heater making popping or rumbling noises?

Popping or rumbling noises from a tank water heater are usually caused by sediment buildup at the bottom of the tank, which traps water under the mineral layer and makes it boil. Sediment reduces efficiency and can shorten the tank's life. Flushing the tank yearly helps, but a heavily built-up or aging tank may need repair or replacement.

Why is my water heater not producing hot water?

A water heater usually stops producing hot water because of a failed heating element or thermostat on an electric unit, or a pilot, ignition, or gas supply problem on a gas unit. A tripped breaker, heavy sediment buildup, or a faulty thermocouple can also cause the problem. On tankless units, error codes and mineral scale are common culprits. A technician can pinpoint the cause and quote the repair upfront.

Should I choose a tank, tankless, or heat pump water heater?

The best water heater depends on your household's hot water demand, available space, fuel source, and budget. Tank models have the lowest upfront cost, tankless units provide on-demand hot water and save space, and heat pump water heaters offer some of the lowest operating costs for electric homes. During a free in-home estimate, your technician will compare options with upfront pricing.

How long does a water heater last?

Most tank water heaters last about 8 to 12 years, while tankless water heaters often last 20 years or more with regular descaling. Heat pump water heaters typically last 10 to 15 years. If your tank is older than 10 years, leaks, produces rusty water, or no longer keeps up with demand, replacement is often the better value.

Should I repair or replace my water heater?

Repairing a water heater usually makes sense when the unit is under 8 years old and the problem is a replaceable part, such as a thermostat, heating element, or igniter. Replacement is typically the better choice if the tank is leaking, the unit is over 10 years old, or repairs keep adding up. Aire Serv of Knoxville charges $99 for a diagnostic visit during regular business hours and waives it when you approve the repair.

Same-Day Water Heater Repair and Installation in Knoxville, TN

Reliable Hot Water From Tank, Tankless, and Heat Pump Systems

Aire Serv of Knoxville offers same-day repair, replacement, and installation for tank, tankless, and heat pump water heaters in Knoxville homes, priced by the job, not the hour.

Same-day water heater service
Diagnostic fee waived with repair
Free in-home replacement estimates
Financing available
Licensed and fully insured

Reliable Hot Water From Tank, Tankless, and Heat Pump Systems

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Why Knoxville Homeowners Call Us for Water Heater Service

Quick help for cold showers and clear options for your next water heater.

Aire Serv of Knoxville offers same-day service for water heater repairs, so a cold shower or a leaking tank doesn't turn into days of waiting. Calls are answered 24/7, and our technicians make home visits seven days a week. Regular appointments run 8 a.m. to 5 p.m., Monday through Friday, and evening, weekend, and holiday visits are available for an added fee when a leak or a total loss of hot water can't wait.
Water heater repairs are priced by the job, not the hour, and you'll know the full cost before work begins. When you approve the repair, the diagnostic fee is waived. If your unit is worn out, we provide a free in-home estimate on replacement, since the right size and type depend on your household's hot water use, available space, and fuel source. Financing is available, along with discounts for seniors, military members, veterans, first responders, and teachers.
Our licensed technicians repair and install traditional tank water heaters, tankless units, and energy-efficient heat pump water heaters, so you can compare every option with one company. We service all makes and models, including Rheem and Ruud, in both gas and electric versions and a range of sizes for small and large households. Aire Serv of Knoxville is fully insured, our workmanship and parts are guaranteed, warranties are available, and every job is backed by the Neighborly Done Right Promise®.

What to Expect From Water Heater Repair and Installation

A water heater visit from Aire Serv of Knoxville starts with a diagnosis of the unit and its connections. For tank repairs, your technician checks the thermostat, heating elements or burner and pilot assembly, gas or electrical supply, pressure relief valve, and signs of sediment or leaks. Tankless units are checked for error codes, flow sensor issues, and mineral scale, while heat pump water heaters are inspected for airflow, compressor operation, and condensate drainage. You receive an upfront price before work begins. When replacement makes more sense, the technician reviews your space and hot water demand, then recommends a tank, tankless, or heat pump model. Installation includes removing the old unit, inspecting the connected plumbing, and installing the new water heater to local code. Many Knoxville homeowners use a replacement to move to a more efficient tankless or heat pump unit.

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What to Expect From Water Heater Repair and Installation

The Aire Serv Advantage

From tune-ups and maintenance to heater repair and air conditioning replacement, we provide services that keep the air you breathe clean and keep your home or business at the perfect temperature.

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Aire Serv of Knoxville

Aire Serv of Knoxville repairs and installs water heaters throughout Knoxville, Oak Ridge, Powell, and Lenoir City. We also serve homes in Clinton, Halls, Loudon, Sweetwater, and nearby East Tennessee communities. Whether you need a quick repair on a tank heater or want to switch to a tankless or heat pump water heater, our licensed technicians offer same-day service and free in-home replacement estimates.

HVAC Services in Knoxville and Surrounding Areas

Aire Serv of Knoxville provides complete water heater and home comfort services. We repair, replace, and install standard tank water heaters, tankless water heaters, and heat pump water heaters for homes across the area. Our licensed technicians also handle heating and cooling repair, HVAC replacement, thermostat installation, and carbon monoxide detector installation for homes with gas water heaters and furnaces.

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Water Heater Questions From Knoxville Homeowners

Hot water is easy to take for granted until it stops. These answers explain common water heater problems, how long different types last, how tank, tankless, and heat pump water heaters compare, and when repair or replacement makes more sense, so Knoxville homeowners can make a confident decision with Aire Serv of Knoxville. Knowing the basics helps you act quickly when a tank starts leaking or the showers run cold.

A water heater usually stops producing hot water because of a failed heating element or thermostat on an electric unit, or a pilot, ignition, or gas supply problem on a gas unit. A tripped breaker, heavy sediment buildup, or a faulty thermocouple can also cause the problem. On tankless units, error codes and mineral scale are common culprits. A technician can pinpoint the cause and quote the repair upfront.
Most tank water heaters last about 8 to 12 years, while tankless water heaters often last 20 years or more with regular descaling. Heat pump water heaters typically last 10 to 15 years. If your tank is older than 10 years, leaks, produces rusty water, or no longer keeps up with demand, replacement is often the better value.
The best water heater depends on your household's hot water demand, available space, fuel source, and budget. Tank models have the lowest upfront cost, tankless units provide on-demand hot water and save space, and heat pump water heaters offer some of the lowest operating costs for electric homes. During a free in-home estimate, your technician will compare options with upfront pricing.
Popping or rumbling noises from a tank water heater are usually caused by sediment buildup at the bottom of the tank, which traps water under the mineral layer and makes it boil. Sediment reduces efficiency and can shorten the tank's life. Flushing the tank yearly helps, but a heavily built-up or aging tank may need repair or replacement.
Repairing a water heater usually makes sense when the unit is under 8 years old and the problem is a replaceable part, such as a thermostat, heating element, or igniter. Replacement is typically the better choice if the tank is leaking, the unit is over 10 years old, or repairs keep adding up. Aire Serv of Knoxville charges $99 for a diagnostic visit during regular business hours and waives it when you approve the repair.

Residential
Commercial