Tankless water heater cost with installation

Looking for tankless water heater cost with installation in Washington, DC? Call WaterHeater Direct 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, flooding your floor, or has stopped working entirely, do not wait. Water damage happens fast and can get expensive quickly. Turn off the water supply to the unit if you can safely reach the valve. Then, give us a ring right away. Licensed, independent service providers serve your area — call now for a contact a provider. (978) 759-4817

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.

About this service

This covers the price of the tankless unit itself plus the labor to install it. Factors like moving the unit to a new location, upgrading your gas supply pipe, or installing specialized venting will shift the total. We evaluate your specific setup to provide a clear estimate. Exact pricing confirmed free on the call.

Frequently asked in Washington

How long do hot water heaters typically last?

In Washington D.C., standard tank water heaters generally last between 8 to 12 years. Tankless water heaters, when properly maintained, can often last 20 years or more. The mineral content in D.C.'s water and your household's usage habits can influence this lifespan. Consider these factors when planning.

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

What is the most efficient type of water heater?

Tankless water heaters are considered the most efficient option. They heat water only when you need it, eliminating the energy waste of keeping a large tank hot around the clock. This can lead to substantial savings on your utility bills in D.C. Learn about the efficiency benefits for your home.

What are signs I need a new water heater?

Watch for signs such as a significant reduction in hot water, discolored or metallic-tasting water, and visible leaks from the unit. Unusual noises, like banging or gurgling, can also indicate a problem. Don't delay until it fails.

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

Sediment buildup within the tank is a very common issue, often causing noise and reducing heating efficiency. Another frequent problem involves a malfunctioning heating element or thermostat, which can lead to lukewarm or no hot water. A qualified professional can identify and resolve these.

Is it worth it to repair a hot water heater?

Repairing a water heater is often a sensible choice for minor issues on a newer unit. However, if your Washington D.C. water heater is older and has required multiple repairs, investing in a new one might be more economical over time. A professional can offer an assessment and recommendation.

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, Dupont Circle, Adams Morgan, U Street Corridor — and every surrounding area.