Home / Counties / Maryland / Washington County

Washington County Heating & Cooling Services

The county-level homework for Washington County, Maryland — its 458 square miles, its 18 ZIP codes, its place inside the Hagerstown metro's coverage. TempReach USA connects homeowners here with independent local HVAC technicians; the record behind the routing is on this page.

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

458
Square miles of land
18
ZIP codes in the county
4,947
Heating degree days
1,013
Cooling degree days

Washington County heating & cooling, in brief

Washington County covers 458 square miles in Maryland. Its climate is read from the normals recorded at MARTINSBURG E WV RGNL AP, WV US — 4,947 heating degree days against 1,013 cooling degree days — and its dominant pressure is a heating one. TempReach USA is a referral service, not an HVAC company: one call connects you with an independent local HVAC technician serving the county.

The Washington County climate record

The climate figures on this page are the primary metro's NOAA 1991-2020 normals — climate normals recorded at MARTINSBURG E WV RGNL AP, WV US, the station for the Hagerstown metro this county belongs to. An average year there brings 4,947 heating degree days, 1,013 cooling degree days, 38.97 inches of precipitation, 26.2 days at 90 degrees or above and 104.3 nights at or below freezing, around an average temperature of 54.1 degrees.

Heating writes this county's HVAC calendar. With 4,947 heating degree days against 1,013 cooling degree days in the normals recorded at MARTINSBURG E WV RGNL AP, WV US, the systems across Washington County earn their keep in the cold half of the year: furnaces and heat pumps cycling through 104.3 nights at or below freezing, when a breakdown stops being a comfort problem and becomes a household one. The pressure shows up as midwinter failures on the oldest equipment first, and a maintenance calendar that has to be kept in autumn — because by the time the cold arrives, the county's systems are already on stage.

The county's ground shapes the work in one more way: 458 square miles is a lot of roofs for a service map to hold, and Washington County's homes divide between its listed communities — Hagerstown, Halfway, Robinwood, Fountainhead-Orchard Hills, St. James, Boonsboro — and the roads between them. A technician routed here is working a county, not a street: the drive between calls is part of the diary, and the systems at each end of it were fitted in the decades those communities were built.

A ZIP code in Washington County is a small climate-and-housing district of its own. The county's 18 codes — 21711, 21713, 21715, 21719 among them — all read the same normals from MARTINSBURG E WV RGNL AP, WV US, yet the systems inside them were installed in different decades, serve different house sizes, and fail in different orders. That is why this page prints the whole list rather than a summary: the codes are the finest division of the county the data supports, and they are the division the work itself follows.

Position first: Washington County lies east of the Hagerstown metro's centre, roughly 13 miles from the metro's centre as the map measures it, with Berkeley County, Morgan County among the counties around it. Neighbourhood at county scale matters to heating and cooling because systems do not respect the border — the same subdivisions' building decades continue across it, the same cold snaps and heat waves examine both sides in the same night — while each county's page, this one included, keeps the local figures distinct.

A year in Washington County, counted the way a technician counts it, is not twelve months but two workloads and the weeks between them. The first workload is written as 1,013 cooling degree days, the second as 4,947 heating degree days; 38.97 inches of precipitation fall across both, and the average temperature of 54.1 degrees is simply the figure the two workloads leave behind when they are averaged. The county's heating pressure is whichever workload the count puts first — and the maintenance year is arranged around that ordering.

Communities and housing in Washington County

Communities across Washington County include Hagerstown, Halfway, Robinwood and Fountainhead-Orchard Hills — 11 listed places in all, spread over the county's 458 square miles in Maryland. Each community's housing was built in its own decades, so the heating and cooling diary reads differently from one name on that list to the next: older systems and original ductwork in the long-settled places, matched fleets ageing together in the subdivisions, and additions and conversions in the communities still growing at the county's edges.

The county's position frames its housing as well. Washington County lies east of the Hagerstown metro's centre, roughly 13 miles out, and the metro's era mix — 28.8% built since 2000, 26.5% between 1980 and 1999, median year 1984 — reads at this distance with a county accent: the shares nearer the centre and the shares at the edge were platted in different decades of the metro's growth. Which band a given Washington County street belongs to is a local fact; that the bands exist, in these proportions, is the Census record this page is built on.

The county is worth a page of its own because its facts do not reduce to its metro's. The Hagerstown metro supplies the climate station and the housing profile, but Washington County supplies everything at ground level: 458 square miles, its own communities and codes, its own neighbours — Berkeley County, Morgan County among the 2 on its list — and its own position, east of the Hagerstown metro's centre. The metro page and this page link to each other because neither half of that picture stands well without the other.

Metro areas covering Washington County

City pages carry the metro-wide homework — housing eras, the problem ranking, services in depth. This county sits inside their coverage.

Heating & cooling services in Washington County

Communities in Washington County

Hagerstown

Population 43,490

Halfway

Population 10,974

Robinwood

Population 7,822

Fountainhead-Orchard Hills

Population 6,364

St. James

Population 4,581

Boonsboro

Population 3,799

Smithsburg

Population 3,069

Maugansville

Population 3,057

Paramount-Long Meadow

Population 2,660

Williamsport

Population 2,133

Hancock

Population 1,715

Washington County ZIP codes

21711, 21713, 21715, 21719, 21722, 21733, 21734, 21740, 21742, 21746, 21750, 21756, 21767, 21779, 21781, 21782, 21783, 21795

Neighbouring counties

Washington County heating & cooling questions

Is my home in Washington County, Maryland covered by TempReach USA?
Coverage is measured on this page in three units at once: land, codes and communities. The land is 458 square miles of Maryland; the codes run 18 in total, opening at 21711 and 21713; the communities number 11 on the record. A home that matches any one of those three measures sits inside the county ground this page describes, east of the Hagerstown metro's centre. The county's own map reads: Hagerstown 43,490; Halfway 10,974; Robinwood 7,822; Fountainhead-Orchard Hills 6,364; St. James 4,581; Boonsboro 3,799; Smithsburg 3,069; Maugansville 3,057; Paramount-Long Meadow 2,660; Williamsport 2,133; Hancock 1,715 — name and population, place by place. For the record, Washington County, Maryland covers 457.784 square miles, about 292,982 acres, its centre entered at 39.603621, -77.814671, east of the Hagerstown metro's centre. On the county's own record, the neighbor ledger names: Berkeley County, Morgan County.
How many hot days and freezing nights shape HVAC work in Washington County, Maryland each year?
Count the year from the equipment's side in Washington County, Maryland: a long run of heating calls through 104.3 freezing nights, a long run of cooling calls through 26.2 hot days, and humidity work in the wet stretches that 38.97 inches of yearly precipitation produce. The heating profile named on this page is the summary of that count — which workload arrives first, stays longest, and wears the county's systems down fastest. For the record, the ZIP ledger entered against Washington County, Maryland includes: 21742, 21746, 21750, 21756, 21767, 21779, 21781, 21782, 21783, 21795. On the county's own record, the places ledger reads, populations included: Hagerstown 43,490; Halfway 10,974; Robinwood 7,822; Fountainhead-Orchard Hills 6,364; St. James 4,581; Boonsboro 3,799; Smithsburg 3,069; Maugansville 3,057; Paramount-Long Meadow 2,660; Williamsport 2,133; Hancock 1,715. The map around Washington County, Maryland is entered as: Berkeley County, Morgan County.
Which HVAC calls are most common across Washington County, Maryland?
In Washington County, Maryland the diary is read ZIP by ZIP: the codes from 21711 to 21795 divide 458 square miles of housing that share the Hagerstown metro's problem ranking, with the refrigerant transition reaching older systems at its head. Which address produces the next call depends on the home's era and equipment; which fault produces it, most often, is the one the county's climate and stock manufacture together. Beside Washington County, Maryland on the record stand: Berkeley County, Morgan County. The county's geography, as recorded: 457.784 square miles (about 292,982 acres), a centre at 39.603621, -77.814671, east of the Hagerstown metro's centre. The county's own ZIP list includes this run: 21742, 21746, 21750, 21756, 21767, 21779, 21781, 21782, 21783, 21795.
When is the busiest season for HVAC work in Washington County, Maryland?
Two peaks, one taller. Every county in this climate gets a hot-season rush and a cold-season rush; in Washington County, Maryland the figures at MARTINSBURG E WV RGNL AP, WV US — 4,947 heating degree days against 1,013 cooling degree days — say the heating side runs the longer season. The households in Hagerstown and across the county who schedule their checks in the shoulder weeks meet their systems on their own timetable instead of the weather's. For the record, Washington County, Maryland's places are entered as name and population: Hagerstown 43,490; Halfway 10,974; Robinwood 7,822; Fountainhead-Orchard Hills 6,364; St. James 4,581; Boonsboro 3,799; Smithsburg 3,069; Maugansville 3,057; Paramount-Long Meadow 2,660; Williamsport 2,133; Hancock 1,715. For the record, the counties entered beside Washington County, Maryland include: Berkeley County, Morgan County. On the county's own record, the ground is entered as 457.784 square miles — about 292,982 acres — centred at 39.603621, -77.814671, east of the Hagerstown metro's centre.
Am I hiring TempReach USA or a local technician in Washington County, Maryland?
The arrangement is stated in the county's own terms. This page publishes Washington County, Maryland's homework — its record at MARTINSBURG E WV RGNL AP, WV US, its heating pressure, its place inside the Hagerstown metro — and the call routes onward from that homework to an independent technician serving the county. Two roles, kept separate on purpose: publisher and router here, practitioner there. On the county's own record, one run of the ZIP ledger reads: 21742, 21746, 21750, 21756, 21767, 21779, 21781, 21782, 21783, 21795. Entered by ground: 457.784 square miles of Maryland, about 292,982 acres, centred at 39.603621, -77.814671, roughly 13 miles from the metro centre it is measured against. On the county's own record, the neighbor ledger names: Berkeley County, Morgan County.
How does this Washington County, Maryland page relate to the Hagerstown city page?
Read the city page for the ranking and the services; read this page for where you stand inside them. Washington County, Maryland's record — 458 square miles in Maryland, 18 ZIP codes, a heating climate profile — is the local layer of the Hagerstown metro's data, and the two pages are cross-linked both ways so neither has to carry the other's detail. Start wherever you landed; the other page is one card away. Entered under Washington County, Maryland's name, the place ledger runs, populations attached: Hagerstown 43,490; Halfway 10,974; Robinwood 7,822; Fountainhead-Orchard Hills 6,364; St. James 4,581; Boonsboro 3,799; Smithsburg 3,069; Maugansville 3,057; Paramount-Long Meadow 2,660; Williamsport 2,133; Hancock 1,715. A run from the county's code ledger, as recorded: 21742, 21746, 21750, 21756, 21767, 21779, 21781, 21782, 21783, 21795. For the record, Washington County, Maryland covers 457.784 square miles, about 292,982 acres, its centre entered at 39.603621, -77.814671, east of the Hagerstown metro's centre.

Our role in Washington County, stated plainly

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.

Talk to an HVAC technician in Washington County

One call connects you with an independent local heating and cooling professional serving Washington County and the Hagerstown 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

Call Now