Heating, cooling and plumbing in Loudoun County
From Sterling out to the Blue Ridge: heating, AC, plumbing, air duct cleaning and dryer vent cleaning. An AC or heat pump repair diagnostic visit is $99.
Every Loudoun County town we serve
Pick your town for its own page. Under each one: the typical age of its houses and how most of them are heated, from the Census.
- Aldie20105Typical owned home built 2013. 78% of owned homes heat with natural gas.
- Ashburn20147 · 20148Typical owned home built 1998. 82% of owned homes heat with natural gas.
- Bluemont20135Typical owned home built 1981. 54% of owned homes heat with electricity.
- Hamilton20158Typical owned home built 1988. 51% of owned homes heat with electricity.
- Leesburg20175 · 20176Typical owned home built 1996. 66% of owned homes heat with natural gas.
- Lovettsville20180Typical owned home built 2007. 44% of owned homes heat with propane.
- Middleburg20117Typical owned home built 1986. 63% of owned homes heat with electricity.
- Paeonian Springs20129Typical owned home built 1997. 47% of owned homes heat with propane.
- Philomont20131Typical owned home built 2000. 42% of owned homes heat with propane.
- Purcellville20132Typical owned home built 2001. 49% of owned homes heat with electricity.
- Round Hill20141Typical owned home built 2004. 53% of owned homes heat with electricity.
- Sterling20164 · 20165 · 20166Typical owned home built 1979. 57% of owned homes heat with natural gas.
- Waterford20197Typical owned home built 1996. 56% of owned homes heat with propane.
Neighborhood pages: Brambleton, Broadlands, Dulles, South Riding
Who signs off, and what's in the water
The permit office and the water utility change from one town to the next, and both change the job. Here is what applies in this county, with the source for each.
- PermitsLoudoun County issues building permits across the county, including inside the Town of Leesburg. Permit pages: Loudoun County.
- PermitsLoudoun County requires a permit to swap a gas water heater or furnace. Since October 2025, a replacement that keeps the same BTUs in the same spot needs no plans. Source.
- WaterLoudoun Water: Its 2025 report prints no hardness; its water quality page sends customers to Fairfax Water's Corbalis data. Source.
- WaterTown of Leesburg Utilities: hardness of 5.8 to 8.8 grains per gallon in its 2025 report. Source.
- HousesHalf the owner-occupied homes in Loudoun were built in 2003 or earlier. Census table.
Licensed, local, and easy to check
Look up our license with the state, or read it off the side of our van.
SwiftPro Heating, Cooling & Plumbing
- Virginia contractor
- Class A
- License no.
- 2705192276
- Shop
- Lafayette Center Dr, Chantilly
- 4.9 from 889 reviews
Check the license with Virginia DPOR
A dedicated heating and cooling team and a dedicated plumbing team, out of our shop in Chantilly.