Clarke County, Virginia, read at county level: 6 ZIP codes and 0 communities inside the Washington metro's coverage, with the climate record and service pressures set out below. TempReach USA connects you with an independent local HVAC technician serving the county.
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In brief: 176 square miles of Virginia, a climate read from WASHINGTON DC DULLES AP, VA US's normals, and a heating pressure as the county's dominant one — 4,604 heating degree days set against 1,233 cooling degree days in an average year. TempReach USA does not do the work itself; it is a referral service, and one call connects you with an independent local HVAC technician serving Clarke County.
The station for this county's metro is WASHINGTON DC DULLES AP, VA US, and its NOAA 1991-2020 normals are the source of every figure in this section. Precipitation averages 43.24 inches a year; the temperature record averages 55.7 degrees, built from 32.7 days at 90 or above and 101.7 nights at or below freezing; the workload totals 4,604 heating degree days and 1,233 cooling degree days. Clarke County is read through that record throughout this page.
There is a second heating pressure in Clarke County that the degree days only imply: repetition across distance. A cold snap does not visit one street here; it visits all 6 of the county's ZIP codes in the same night, from the communities nearest the metro's centre to the edge of its 176 square miles, and every ageing system in that ground is examined by the same low temperature at the same hour. That simultaneity — many systems, one weather, a county's worth of roads between the calls — is what makes the cold weeks in a heating-profile county feel different from the same weeks in a city.
The county's neighbours frame it as well: Fairfax City, Fairfax County, Falls Church City are among the 22 counties on its neighbour list, and together they form the working ground around Clarke County's own 176 square miles. A system near a shared border lives in both counties' weather at once, whichever page describes its home — the pages divide the map so the record can be read county by county, and the links between them keep the whole in view.
Routing in Clarke County is written in five digits. The county's codes begin at 20130 and run to 22663, 6 in total, and between the first and the last sits the county's full spread of ground — 176 square miles from the metro-facing edge to the far side. A technician's week here is a tour of those codes, and the tour is also a tour of the county's building history, because each code's systems were largely fitted when that code's streets were built.
The counties around Clarke County include Fairfax City, Fairfax County, Falls Church City, and the whole group shares the Washington metro's climate record from WASHINGTON DC DULLES AP, VA US. What the neighbours do not share is this county's ground: 176 square miles, 6 ZIP codes, a centroid northwest of the Washington metro's centre. Service patterns cross the county line freely — a cold week fills diaries on both sides of it — but the mix of housing and systems on each side is its own, which is why each county in the group carries its own page.
Two numbers organise Clarke County's heating and cooling year: 4,604 and 1,233, the heating and cooling degree days in the normals at WASHINGTON DC DULLES AP, VA US. Whichever runs larger decides the county's dominant pressure — here, a heating one — and with it the season a household should prepare for first. The supporting figures fill in the texture: 55.7 degrees as the year's average temperature, 32.7 hot days, 101.7 freezing nights, 43.24 inches of precipitation. Every paragraph on this page is, in the end, a reading of those six numbers on this county's ground.
Hold Clarke County up against its own neighbours and the missing place list stops looking like a gap. Fairfax City, Fairfax County, Falls Church City are among the 22 counties around it; some of them are lists of named towns, this one is 176 square miles of ground lying northwest of the Washington metro's centre, roughly 35 miles out. Its communities exist — people live in them, heat them, cool them — but the record reaches them through the county's ZIP codes rather than through names, and this page follows the record's way of seeing.
Look at the second era as well as the first and Clarke County's stock comes into focus. After the dominant band — homes built between 1980 and 1999, 28.1% of the metro's total — the next share was built since 2000, at 25.9%. Between them those two bands account for most of the systems a technician will open in this county, and they are different machines in different houses: the earlier band's equipment fitted into older envelopes, the later band's into the standards of its own decade. The county's diary is the two bands, interleaved street by street.
Put the county's coverage facts in one place and they read like this: 176 square miles of land in Virginia, 0 listed communities, 6 ZIP codes, 22 neighbouring counties on the record, and a place inside the Washington metro coverage. No single figure describes the county; the set of them does, and it is the set this page is organised around, from the climate record above to the community and ZIP lists below.
City pages carry the metro-wide homework — housing eras, the problem ranking, services in depth. This county sits inside their coverage.
TempReach USA is not an HVAC company. We employ no heating or cooling technicians, we run no service trucks, and we do not carry out HVAC work of any kind. This website and its call center exist for one purpose: to connect homeowners with independent local heating and cooling professionals who serve their area. When you call the number on this site, your call is routed to such a professional. From that point, everything about the job belongs to that professional and to you: the assessment, the work itself, the scheduling, what you are charged, and the terms of any agreement you reach. The professional who takes your job is solely responsible for it. The technician who arrives at your home runs their own business; they are not an employee, agent or subcontractor of TempReach USA. Our part is the information on these pages — assembled from Census Bureau housing data and NOAA climate records for each metro — and the routing of your call. We state this plainly on purpose: you should know exactly who you are hiring before anyone picks up a wrench or a gauge.
One call connects you with an independent local heating and cooling professional serving Clarke County and the Washington metro.
Call center hours: Mon-Fri 7:00 AM-10:00 PM ET | Sat 8:00 AM-10:00 PM ET | Sun 7:00 AM-9:00 PM ET