Furnace tune-ups in Waterford.

Propane heats more than half of the owner homes in ZIP 20197, and the Census finds none on natural gas. So a Waterford tune-up is mostly a propane furnace, and the tech holds its gas pressure to the propane number printed on the rating label, not the natural gas figure. About one owner home in six here burns oil. We don’t work on oil burners, so those need another company. Heat pumps, boilers and ductless mini splits are ours, at $69 a system, normally $99.

The median owner home in ZIP 20197 went up in 1996, so a furnace that came with a house of that age is about thirty years old, and about a third of the owner homes date from before 1980. At that age the igniter and flame sensor tend to wear first, with the draft inducer motor behind them. The tune-up runs the furnace through full cycles and writes the readings down. If a part is tired, the price is on paper before anyone touches it, and you decide.

The Purcellville weather station, about six miles west-southwest of the village, logs 4,942 heating degree days in a normal year and 114.7 nights at or below 32 degrees. In a median year the first 32-degree night of fall lands around October 25, so the tune-up belongs before that date. In January 2026, the coldest nights, the 27th, 30th and 31st, came under Extreme Cold Warnings for Western Loudoun. A furnace that stumbles on one of those means a cold house.

A propane furnace burns its fuel but runs on household power: the igniter, the blower and the control board all need it. Loudoun has lost power to snow and wind before. The February 2010 snowstorm brought outages across the county, and in July 2024 dozens of trees, wires and poles came down near Clarkes Gap Road and Hurley Lane. The tune-up is also the time to check that the furnace starts cleanly and that nothing that can burn sits within three feet of it, the county fire and rescue clearance.