The county-level homework for Arapahoe County, Colorado — its 798 square miles, its 17 ZIP codes, its place inside the Denver 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
In brief: 798 square miles of Colorado, a climate read from DENVER CENTENNIAL AP, CO US's normals, and a heating pressure as the county's dominant one — 6,014 heating degree days set against 636 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 Arapahoe County.
The climate figures on this page are the primary metro's NOAA 1991-2020 normals — climate normals recorded at DENVER CENTENNIAL AP, CO US, the station for the Denver metro this county belongs to. An average year there brings 6,014 heating degree days, 636 cooling degree days, 15.02 inches of precipitation, 31.7 days at 90 degrees or above and 154.7 nights at or below freezing, around an average temperature of 50.2 degrees.
Count the cold from the ground up in Arapahoe County and the figures arrange themselves: 6,014 heating degree days against 636 cooling degree days, 154.7 freezing nights in an average year, and a housing stock spread over 798 square miles whose heating plant was fitted in the decades its communities were built. The diary that follows is written street by street — ignition and exchanger work where the stock is oldest, control and sensor work where it is newest — and the county's technicians read the address before they read the fault.
Set the county inside its metro and the picture completes. Arapahoe County answers to the Denver metro's data — its housing profile, its problem ranking, its climate station — but the county is where that data touches ground: 3 communities, 17 ZIP codes, one county's worth of systems ageing under the record kept at DENVER CENTENNIAL AP, CO US. This page is that ground-level reading, kept separate from the metro page so the local detail is never averaged away.
Routing in Arapahoe County is written in five digits. The county's codes begin at 80010 and run to 80137, 17 in total, and between the first and the last sits the county's full spread of ground — 798 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.
Arapahoe County sits alongside Douglas County, Elbert County, Gilpin County in the Denver area — 9 neighbouring counties share its coverage map in all, and the borders between them are lines on a map rather than changes in the weather. The same station record travels across those borders, the same housing decades appear on both sides, and a technician's ground here is really the cluster: this county and its neighbours, read together, with this page keeping Arapahoe County's own share of the picture separate.
A year in Arapahoe 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 636 cooling degree days, the second as 6,014 heating degree days; 15.02 inches of precipitation fall across both, and the average temperature of 50.2 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.
Arapahoe County is a county of distinct communities rather than one continuous town: Aurora, Centennial, Littleton and its remaining communities are among the 3 places on its record, each with its own building era and its own stock of systems. Position plays its part as well — the county sits east of the Denver metro's centre, so its communities meet the Denver metro's weather at slightly different distances from the centre — but it is the place list that a service diary follows, name by name, through the year.
Census figures give Arapahoe County's heating and cooling its proportions. The metro it belongs to counts 1,268,353 housing units across 1,201,206 households, 64.3% of them owner-occupied, and the era mix runs 17.1% before 1960, 25.0% from 1960 to 1979, 27.3% from 1980 to 1999 and 30.6% since 2000. A county inside that metro inherits the mix in its own proportions — which is why two homes on the same Arapahoe County street, built forty years apart, can need entirely different conversations from the same technician.
A reader who only had Arapahoe County's identifying figures would already know its shape: a county of 798 square miles in Colorado, 17 ZIP codes, 3 communities on the record, sitting east of the Denver metro's centre. What the figures cannot say alone is how the ground feels to work — the drives between calls, the mix of decades in the housing, the season that runs taller — and that is what the rest of this page is for, section by section.
City pages carry the metro-wide homework — housing eras, the problem ranking, services in depth. This county sits inside their coverage.
Population 390,201
Population 107,386
Population 45,092
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 Arapahoe County and the Denver 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