Boiler repair and replacement in Triangle.

Triangle’s median owner home was built in 2003, and most of those newer houses heat with forced air. You will find them mostly in the older sections, like Carborough Heights or the first Graham Park plats, which date to the 1940s and 1950s. About one in six owner homes here predates 1960. If your house is from that era, a boiler is a likely candidate for your heat source, even if your neighbors use furnaces.

Space is the limit in Triangle’s early houses. A boiler there usually lives in a basement corner or a narrow closet under a masonry chimney, Mockingbird Heights included, and a wall-hung condensing boiler at $12,782 to $16,500 installed often fits where a big cast iron unit came out.

In many Triangle homes from the 1950s, that same chimney also serves a water heater. If you replace the boiler but keep the water heater on the chimney, the draft dynamics change. The quote must address how the remaining appliance vents safely, because an oversized flue can cause backdrafting or poor combustion for the water heater.

Prince William County’s fire department recommends a yearly inspection of the heating system and chimneys to keep fumes venting properly, and for a Triangle boiler that’s what the $69 tune-up covers. Gas heats about three in four owner homes in Triangle, so the boilers in those early sections are nearly all gas-fired, and their tune-up starts at the burner and the gas pressure before it moves to the loop. About six in ten owner homes are detached houses, and in the newer subdivisions from the 2000s a boiler is rare enough that the neighbors won’t know what one sounds like when it’s healthy.