Tankless Water Heater in Waldorf, MD

Will a tankless unit fit a typical Waldorf house?

Usually, yes. Most homes in the 20603 ZIP code went up after 1980, with the largest share built between 1980 and 1999, so a Waldorf heater tends to sit in a basement, garage or utility closet with room to mount a wall unit. What changes is the plumbing around it. A gas tankless burner fires far harder than a 40- or 50-gallon tank, so the pipe from the meter often has to be upsized, and the old metal flue can't be reused; the new unit needs its own vent, usually through a side wall. Electric models skip the venting but may need a bigger electrical service.

What does Waldorf's water mean for the heat exchanger?

The Charles County Department of Public Works runs the Waldorf Community water system. Most of its water is pumped from 18 deep wells in the Patapsco and Magothy aquifers and blended with surface water the county buys from WSSC Water, then disinfected with chlorine. Groundwater and river water carry different minerals, and the county's report doesn't print a hardness figure, so ask the plumber to test at the tap before deciding on scale protection. Either way, have isolation valves installed so the heat exchanger can be flushed on schedule.

Who issues the permit in Charles County?

Waldorf has no city government, so permits run through Charles County's Department of Planning and Growth Management, Codes, Permits and Inspection Services in La Plata (301-645-0692). The county building code adopts the International Plumbing Code and the International Fuel Gas Code, which cover gas pipe sizing, venting, combustion air and relief valves on a new heater. A plumber who works in Charles County regularly will know what the county wants to see; ask who pulls the permit and get that in writing.

A safety note for Waldorf

Washington Gas serves Charles County. If you smell gas near the heater or anywhere in the house, get everyone out first. Once you're outside, call 911 and the Washington Gas emergency line at 844-WASHGAS (844-927-4427), select option 1. A plumber can come in to repair or replace gas piping once the utility has made the line safe.