Pro Plumbers

Len The Plumber is a full service plumbing and drain cleaning company serving the entire Baltimore, Washington D.C., Northern Virginia, Delaware and the Philadelphia Area as well as Anne Arundel, Baltimore, Carroll, Cecil, Harford, Howard, Montgomery, Prince George’s, Charles, Fairfax, Alexandria, Arlington, Loudoun, Prince William, Falls Church, Manassas, Delaware, Chester, New Castle, and Stafford counties. We are continuing to grow and expand our service areas so please continue to check-in to see if we are in your area and always feel free to call if you have a question. Our service area map shows all the counties and district that we currently serve.

We want to be the plumbing company you turn to whether you have an annoying leak, an outdated water heater, drain lines that won't drain, a troublesome boiler, a furnace that won't heat or an air conditioner that won't cool. Whether its an emergency or you are preparing for the coming season, give us a call and we can help you repair or maintain your plumbing, heating and cooling systems for years of great service to you and your family!
Cast iron and ductile iron pipe was long a lower-cost alternative to copper, before the advent of durable plastic materials but special non-conductive fittings must be used where transitions are to be made to other metallic pipes, except for terminal fittings, in order to avoid corrosion owing to electrochemical reactions between dissimilar metals (see galvanic cell).[17]

Plumbing is any system that conveys fluids for a wide range of applications. Plumbing uses pipes, valves, plumbing fixtures, tanks, and other apparatuses to convey fluids.[1] Heating and cooling (HVAC), waste removal, and potable water delivery are among the most common uses for plumbing, but it is not limited to these applications.[2] The word derives from the Latin for lead, plumbum, as the first effective pipes used in the Roman era were lead pipes.[3]
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