Water Heater Replacement in Washington, DC

Signs it is time

• Water seeping from the tank seams or base
• Rusty hot water, or rust flakes around the fittings and drain valve
• Repairs piling up on an older unit
• Not enough hot water for the people now living in the home

Permits in the District

The DC Department of Buildings issues Plumbing and Gas Permits, and its plumbing application covers water heaters and is signed by a Master Plumber or Gas Fitter. Only contractors who hold a DC license for that trade can apply for trade permits. A gas water heater also counts as a gas appliance, so venting and gas connections get a close look. Ask the plumber to confirm the permit is part of the quote.

Choosing the replacement

Size depends on household size and how many showers or appliances run at once, not just the old tank's label.

Old homes, older connections

With a median year built of 1957, many DC homes have had several heaters on the same spot. Swapping one can expose aging galvanized piping, undersized gas lines or a flue that no longer suits modern equipment. DC Water notes that galvanized household pipes can collect lead from past lead service lines and recommends replacing galvanized plumbing, so if the plumber finds galvanized pipe at the heater, ask about the condition of the rest of the system.

Hard water and the new tank

DC water is moderately hard. A new heater will last longer if you flush it periodically and ask the plumber to show you where the drain valve and anode rod are.

What sets the price

• Fuel type, capacity and efficiency of the new unit
• Changes to venting, gas piping or electrical service
• Getting the old heater out of a tight basement or closet
• Permit and inspection
• Expansion tank, drain pan or code upgrades the job requires

Get a written quote that lists each of these items before work begins.