More of our Ashburn visits are about replacing a heating and cooling system than in any other town where we work regularly, and water heaters come up more than almost anywhere. How old your tank is depends on the neighborhood. Broadlands’ median house went up in 2004 and Belmont’s in 2005, so any original tank still running there is around twenty. Brambleton’s median is 2011 and Loudoun Valley Estates’ 2013, which puts their first tanks in their early to mid teens, the stretch where most give out.
Thinking about tankless? In Brambleton the exterior gets a vote. The association’s design guidelines ask for an application before a new metal flue is added, generally won’t approve one through a wall where it would be visibly obtrusive, and want any through-the-wall flue painted a flat, heat-resistant color matching the wall. A tank going back on its old vent needs no application. Price-wise, tankless lands at $8,886 to $10,486 installed; a gas tank going back where the old one stood is $3,379 to $5,485.
Loudoun Water doesn’t print a hardness number of its own, but its water quality FAQ says hardness usually runs higher in the warmer months and that calcium and phosphate build up inside water heaters. That buildup is what rumbles in a tank as it heats, and the yearly water heater flush drains it: $99 right now, normally $199.
Nearly 40 percent of Ashburn homes are townhouses, and in Moorefield and Goose Creek Village it’s more than six in ten, so plenty of tanks live in an upstairs closet where the pan underneath is all that keeps a slow leak off the room below. Goose Creek Village is also the one corner where propane heat is common, about one owner in ten, and a propane water heater is priced on the gas row.