Average Cost to install a tankless water heater in the US
Updated 2025
Estimate Breakdown
material
Tankless Water Heater (material)
$30.00
×
1
EA
$
×
1
EA
$0.00
Installation Supplies
$30.00
×
1
EA
$
×
1
EA
$0.00
labor
Labor to Install Tankless Water Heater
$30.00
×
1
HRS
$
×
1
HRS
$0.00
Demolish Existing Water Heater
$30.00
×
1
HRS
$
×
1
HRS
$0.00
$0
$0
Finish Level
Project Size
EA
Contractor Markup:
%
Avg. cost in United States
$ 2,700.00
Avg. cost per EA:
$225.05
Contractor Markup:
$450.00
Estimate Assumptions
The costs associated with installing a tankless water heater are influenced by various factors, including the type of heater selected (electric or gas), the complexity of the installation, and the level of finish desired. Additionally, any modifications required for existing plumbing or electrical systems can also impact the overall cost. Therefore, it is essential to consider these elements when evaluating the estimate.
Project Timeline
The timeline for installing a tankless water heater generally involves several key phases. Initially, preparation work is necessary, which may include assessing the current plumbing and electrical systems. Following this, the installation phase will take place, where the new unit is mounted and connected. Finally, cleanup will be required to remove any debris from the installation process, ensuring the area is left tidy and functional.
Tankless Water Heater: Comprehensive Guide for Residential Contractors
Installing a tankless water heater is a significant upgrade for any home, providing on-demand hot water while being energy-efficient. The choice between electric and gas models can affect both performance and installation requirements. Understanding the materials needed, such as mounting brackets and venting kits, as well as the labor involved in removing an old unit and installing the new one, is crucial for contractors to ensure a successful project.
Best Practices
To ensure a successful installation of a tankless water heater, contractors should follow several best practices. First, it is vital to conduct a thorough assessment of the existing plumbing and electrical systems to identify any necessary modifications. Safety measures should be prioritized, including proper ventilation and secure connections. Additionally, quality checks should be performed throughout the installation process to ensure that all components are functioning correctly and meet local building codes.
Conclusion
The installation of a tankless water heater is an important investment that enhances a home's efficiency and comfort. By understanding the various components involved, adhering to best practices, and considering the unique aspects of each project, contractors can deliver high-quality installations that meet the needs of homeowners without compromising on safety or performance.
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