Water heater thermostat in Tennessee

Coverage centers on Nashville-Davidson metropolitan government (balance).

What affects the price

Replacing a water heater involves several variables that change the final bill. The main factors are the type of unit you choose—like standard tank models versus tankless systems—and the fuel source, whether gas or electric. Installation complexity also plays a role, especially if we need to update venting, gas lines, or electrical wiring to meet current building codes. Relocating a unit or upgrading to a higher capacity will also shift the bottom line.

Common questions

How long do hot water heaters typically last?

Most conventional tank water heaters last between 8 to 12 years. Tankless water heaters, however, can often last 20 years or more with proper maintenance. Factors like water quality and usage can influence their lifespan.

What is the most efficient type of water heater?

Tankless water heaters are generally considered the most efficient type. They heat water on demand, meaning they don't continuously use energy to keep a large tank of water hot. This can lead to significant energy savings over time.

Useful reference: DOE water heating — efficiency and sizing.