What type of water heater is best for my home?

The best water heater depends on your household size, energy preferences, and budget. Our experts can help you choose between tank, tankless, gas, or electric models.

How long does it take to install a new water heater?

Most water heater installations are completed within a few hours, depending on the type and whether it's a replacement or a new setup.

Should I choose a tank or tankless water heater?

Tank heaters are more affordable upfront, while tankless units are more energy-efficient and provide endless hot water. We help you decide based on your needs.

Do I need a permit for water heater installation?

Yes, in most areas including East TN, permits are required. Advanced Heat AC & Plumbing will handle the necessary permits and code compliance for you.

How do I know it’s time to replace my water heater?

Signs include inconsistent hot water, high energy bills, rumbling noises, and water leaks. If your unit is over 10–15 years old, it may be time for a replacement.

Are energy-efficient water heaters worth it?

Yes, energy-efficient models may cost more upfront but reduce monthly utility bills and often qualify for rebates or tax incentives.

Can you install water heaters in tight spaces or small homes?

Absolutely. We offer compact and tankless options ideal for smaller spaces or homes with limited utility room.

Do you remove the old water heater?

Yes, we remove and properly dispose of your old unit as part of our installation service.

How much does a new water heater cost?

Prices vary based on the model, type, and any installation upgrades needed. We provide transparent estimates before any work begins.

Why choose Advanced Heat AC & Plumbing for water heater installation?

We’re East TN’s trusted experts offering quality equipment, fast installations, and excellent service backed by years of experience.

Tankless Water Heater Installation

Serving Families Throughout Knoxville

CALL US

Schedule Your HVAC or Plumbing Appointment

Knoxville Water Heater Installations

Eventually, every water heater will require replacement. This could be due to issues such as a leaking tank or a faulty heating element, and opting for replacement is usually the most economical choice.  

When it’s time to install a new water heater, our Advanced team can help you with everything necessary to size and install your new system. We proudly offer a complete range of water heater services, from water heater installation and replacement to repair and maintenance.

[data-wf-bgvideo-fallback-img] { display: none; } @media (prefers-reduced-motion: reduce) { [data-wf-bgvideo-fallback-img] { position: absolute; z-index: -100; display: inline-block; height: 100%; width: 100%; object-fit: cover; } }

Plumbing Services

Hydro-Jetting

Sewer Line Repair

Drain Line Repair

Sewer Line Video Inspection

Water Analysis

Commercial Plumbing

Tankless Water Heater Installation

Water Heater Installation

Water Line Repair

Sewer Line Replacement

Septic Tank Installation

Plumbing Service Plan

Frequently Asked Questions About Water Heater Installation & Repair

How long does a standard tank water heater last?

On average, a traditional tank water heater lasts between 8 and 12 years. Factors like local water quality and how regularly the system is maintained play a big role in its lifespan. If your water heater is over 10 years old, it is smart to start planning a replacement before it fails or leaks.

What are the warning signs that my water heater is failing?

The most common signs include rusty or discolored hot water, pooling water or moisture around the base of the tank, inconsistent temperatures, and running out of hot water much faster than usual. Loud rumbling or popping sounds are also clear indicators of trouble.

Why is my water heater making a loud popping or knocking noise?

This noise is caused by sediment buildup at the bottom of the tank. Over time, minerals from our local water settle into a hard crust. When the burner heats the water, steam bubbles get trapped under the sediment and burst, creating a loud knocking or popping sound.

How does Knoxville’s water quality affect my water heater?

East Tennessee's limestone bedrock creates hard water filled with calcium and magnesium. When this water is heated, it leaves scale deposits inside your tank. This layer acts as a barrier, forcing the system to work harder to heat the water, which drives up energy bills and shortens the equipment's life.

How much maintenance does a tank water heater need?

You should have your tank water heater professionally flushed at least once a year to clear out the accumulated sediment. Additionally, the sacrificial anode rod—the metal rod that attracts rust so your tank doesn't corrode—should be checked every two to three years and replaced if it has worn away.

How do I know what size water heater tank my home needs?

Sizing is based on the number of people in your household and your peak water usage. Generally, a 40-gallon tank is ideal for 1 to 3 people, a 50-gallon tank works best for 3 to 4 people, and homes with 5 or more people usually require a 75-gallon tank to ensure everyone gets a warm shower.

Is a leaking water heater considered a plumbing emergency?

Yes. A leaking water heater should never be ignored. Even a tiny puddle can indicate that the inner tank is corroding. If the tank ruptures completely, it can dump dozens of gallons of water into your home, causing severe property damage. If you spot a leak, turn off the water supply valve and call a professional immediately.

Should I replace my system with a gas or electric water heater?

In most cases, it makes the most financial sense to stick with whatever fuel source your home is already set up to use. Switching from electric to gas, or vice versa, requires running new utility lines or venting, which adds to the installation cost. Gas units generally heat water faster, while electric units are slightly less expensive upfront.

Why am I suddenly running out of hot water much faster than usual?

If your hot water supply cuts short, it usually means a specific component has failed. In an electric water heater, the upper or lower heating element may have burned out. In a gas model, a broken or cracked internal dip tube could be dumping cold incoming water directly into the top of the tank instead of sending it to the bottom to be heated.

Do you install tankless water heaters if I want to upgrade?

Yes! While this page covers our traditional tank options, we also specialize in modern tankless water heater installations. During your service consultation, our plumbers can walk you through the pros, cons, and upfront costs of both styles to help you find the absolute best fit for your home and budget.

Don’t Miss Out on These Savings!

$100 OFF

Water Line Repairs

Do you have a water leak? Call the professionals at Advanced Heat AC & Plumbing today! Can not be combined with other offers.

Valid June 1, 2026 - Sept. 30, 2026

$99

Tankless Water Heater Flush

Call the professionals at Advanced Heat AC & Plumbing today! Can not be combined with other offers.

Valid June 1, 2026 - Sept. 30, 2026

Free

Second Opinion on Sewer Line Replacements

Call the professionals at Advanced Heat AC & Plumbing today! Can not be combined with other offers.

Valid June 1, 2026 - Sept. 30, 2026

SEE ALL COUPONS

Call Your Service Tech Advance Heat AC

Thank you! Your submission has been received!

Oops! Something went wrong while submitting the form.

Service You Can Trust with Advance Heat AC

If you don’t receive 5-star service before, during, or after your appointment, we want to know. We care about your happiness, and we will work to make things right. What makes us different? For three generations, our family has been committed to doing the right thing, every time. We believe exceptional service builds lasting relationships.