Tankless Water Heater in Suitland, MD

Is my Suitland house ready for tankless?

Suitland grew fast after federal offices arrived during World War II, and the median house dates to about 1973. Homes of that era typically have a tank heater in the basement or utility room venting into a masonry chimney or a metal flue shared with the furnace. A gas tankless heater can't use that arrangement; it needs a dedicated vent, often run out through a basement wall. The gas line deserves a close look too. Original pipe was sized for a tank burner, and a whole-house tankless unit can need several times that flow at full fire. Supply valves and connectors near a heater from that period are also good candidates for replacement while the wall is open.

What about the water?

Suitland is served by WSSC Water, which draws from the Potomac River and the Patuxent River's Triadelphia and T. Howard Duckett reservoirs. WSSC disinfects with chlorine and adds a corrosion inhibitor that coats pipe walls. The annual report doesn't give a hardness figure for Suitland, so have the plumber check the water or look at what's built up on your faucet aerators. A tankless heat exchanger has narrow passages, and some scale is normal over time; isolation valves make a yearly flush quick.

Who handles permits and gas service?

Suitland is unincorporated. Prince George's County DPIE handles building permits, but WSSC Water issues plumbing and gasfitting permits and inspects the work, and homeowners can't do gasfitting themselves. On the gas side, both Washington Gas and BGE serve parts of Prince George's County, so check the name on your gas bill before any work begins. That's also the utility to call in an emergency.

One safety note

If you smell gas near the heater, don't try to find the leak. Leave the house first, then call 911 and your gas utility from outside, using the emergency number printed on your gas bill. A plumber can return to repair or replace piping once the utility has made things safe. Many Suitland homes also have aging shutoff valves, so it helps to know where the main water shutoff is before installation day.