Boiler repair and replacement in Middleburg.

Piped gas heats only 41 of the 927 owner homes across ZIP 20117. Propane from a tank on the property heats 187 and electricity 582, so a Middleburg boiler is most often a propane boiler. More than a third of owner homes here went up before 1960 and about half before 1980, and those older houses are where hot water heat and radiators are. Four in five owner homes across the ZIP stand detached, and more than a quarter of the homes are let to tenants.

Many of those houses sit in the Historic District, where an exterior change visible from a public street needs a Certificate of Appropriateness from the Historic District Review Committee before work begins. On a front wall, that includes a new plastic vent for a condensing boiler; a cast iron boiler that stays on its chimney changes nothing outside.

Loudoun County issues the building permit, and inside the town limits the Town also requires a Zoning Location Permit for any job that needs a County building permit. A boiler replacement in town therefore takes both, so the order matters when the boiler has already quit. If the boiler is already failing, start the zoning step early.

The Purcellville station, 12 miles north, averages 24.5 degrees on a January night, and Middleburg read 4 below zero on January 23, 2025. A boiler in a house that old is often the oldest thing in it after the radiators, and a fall look at the pressure, the expansion tank and the circulator is cheaper than a January call. The radiators in those houses usually outlast several boilers, so a replacement is normally a boiler-only job.