One county, read on its own ground: Union County, Ohio — 1 communities, 8 ZIP codes, 9 neighbouring counties, inside the Columbus metro. TempReach USA connects you with an independent local HVAC technician serving the county, and this page is the homework behind the connection.
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Start here if you read nothing else: this page covers Union County, Ohio — 432 square miles, 1 listed communities, a centroid northwest of the Columbus metro's centre. Its climate record, from COLUMBUS PORT COLUMBUS INTL AP, OH US, sets a heating pressure on its systems. TempReach USA publishes the homework and routes the call; an independent local HVAC technician serving the county does the work.
Read Union County's weather the way this page reads it: through the thirty-year normals kept at COLUMBUS PORT COLUMBUS INTL AP, OH US for the Columbus metro. Those normals give the county 1,068 cooling degree days and 5,233 heating degree days a year, 41.57 inches of precipitation, 20.7 days at 90 degrees or above, 103.2 nights at or below freezing, and an average temperature of 53.5 degrees — the fixed background every system in the county works against.
Read the climate record and the county's pressure names itself. Heating degree days outnumber cooling degree days at COLUMBUS PORT COLUMBUS INTL AP, OH US, and the lived version of that statistic is a housing stock whose furnaces and heat pumps run the long season while its cooling takes the short one. Across Union County's 432 square miles — from Marysville to the county's edge communities — the pattern repeats: systems sized for the cold, maintained for the cold, and replaced, when their time comes, with the cold in mind first.
The county's ground shapes the work in one more way: 432 square miles is a lot of roofs for a service map to hold, and Union County's homes divide between its listed communities — Marysville — 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.
8 ZIP codes reach into Union County's 432 square miles, among them 43007, 43036, 43040, 43045 — an average of 54.0 square miles of county ground per code. The codes are more than a mailing grid here: they are how the county's service ground divides in practice, each code holding its own mix of housing eras, its own streets of systems ageing on their own schedules. A call in one code and a call in the next can be the same fault in different decades of house.
Position first: Union County lies northwest of the Columbus metro's centre, roughly 35 miles from the metro's centre as the map measures it, with Delaware County, Fairfield County, Franklin 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 Union 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 1,068 cooling degree days, the second as 5,233 heating degree days; 41.57 inches of precipitation fall across both, and the average temperature of 53.5 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.
The county record names Marysville among Union County's communities — a short list, and an honest one: much of the county's housing sits outside its named places, along the roads and in the settlements between them, across 432 square miles of Ohio. The heating and cooling diary follows that pattern. Calls cluster where the named communities cluster, then spread out along the county's ZIP codes, and the systems at the far ends of those drives were fitted in the decades their houses were built, community or no community.
Look at the second era as well as the first and Union County's stock comes into focus. After the dominant band — homes built between 1980 and 1999, 26.4% of the metro's total — the next share was built since 2000, at 25.0%. 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.
Coverage, for Union County, is a set of overlapping maps. The land map is 432 square miles. The address map is 8 ZIP codes and 1 listed communities. The service map is the Columbus metro, whose coverage the county sits inside — northwest of the Columbus metro's centre, roughly 35 miles from its centre. The weather map is one station's record, kept at COLUMBUS PORT COLUMBUS INTL AP, OH US. A home in this county lives on all four maps at once, and its heating and cooling needs are set by the combination.
City pages carry the metro-wide homework — housing eras, the problem ranking, services in depth. This county sits inside their coverage.
Population 26,540
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 Union County and the Columbus 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