Tankless water heater cost with installation

Looking for tankless water heater cost with installation in Washington, DC? Call WaterHeater Pros for a contact a provider — no obligation. Licensed plumbers serve Washington and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

Need help right now? If your water heater is leaking or you have no hot water, don't wait for the problem to get worse. Water damage can happen quickly, so it is best to address the issue right now. We have local technicians ready to help you get things back to normal. Licensed, independent service providers serve your area — call now for a contact a provider. (978) 759-4817

What affects the price

The final price for a new water heater depends on a few moving parts. First, you have to choose the right fuel source—gas or electric—and decide if you want to stick with a standard tank or upgrade to a tankless model. We also look at the physical space where it sits and whether your current venting or gas lines meet modern safety codes. If we need to move the unit or upgrade plumbing to get it up to speed, that shifts the labor involved. Exact pricing confirmed free on the call.

About this service

When you bundle the unit and labor, you are paying for both the high-efficiency equipment and the expertise required to configure it. Factors influencing the total include the unit's capacity, existing plumbing condition, and any necessary modifications to your ventilation systems. These projects are more complex than traditional tank installs, so professional setup is essential for performance.

While you might not think about hot water as much in the summer, it is a great time to evaluate your system’s health. Because the incoming groundwater is warmer, your heater doesn't have to work as hard, making it a stress-free window to replace an aging unit before you hit the busy autumn season.

Frequently asked in Washington

How long do hot water heaters typically last?

In the Washington D.C. area, standard tank water heaters generally last between 8 to 12 years. Tankless models often have a longer lifespan, potentially up to 20 years. Proper maintenance can help ensure longevity for either type.

What is the average cost of putting in a water heater?

What is the most efficient type of water heater?

Tankless water heaters are known for their high efficiency, heating water only when needed and saving energy. High-efficiency tank models are also a great option for D.C. residents looking to optimize their energy usage. We can help you decide.

What are signs I need a new water heater?

Look for signs like a significant decrease in hot water supply, unusual noises, or visible leaks around the base of the tank. If the water from your taps is discolored or the unit is showing signs of significant age, it's time to consider a replacement.

What is the most common problem with a hot water heater?

Sediment buildup in the tank is a frequent issue, impacting performance and causing noise. Other common problems include malfunctioning thermostats, issues with heating elements, or leaks from the tank itself. These can often be diagnosed and resolved.

Is it worth it to repair a hot water heater?

Repairing a water heater is often a good choice for smaller issues, like a thermostat malfunction or a minor leak. However, if the tank itself is corroded or the unit is nearing the end of its lifespan, investing in a new, more efficient model might be more cost-effective for your Washington D.C. home.

Also serving nearby: Alexandria · Baltimore · Richmond · Reading · Philadelphia

All cities in District of Columbia →

More on this: DOE water heating — efficiency and sizing.

Service area details

678,972residents

11,107per sq mile

8ZIP codes served

Serving all of Washington — population 678,972; about 11,107 residents per square mile across 61.1 sq mi. ZIP codes covered include 20001, 20002, 20003, 20004, 20005, 20006, 20007, 20008.

Neighborhoods served in Washington: Georgetown, Capitol Hill, Adams Morgan, Dupont Circle, U Street Corridor — and every surrounding area.