One county, read on its own ground: Clay County, Indiana — 2 communities, 10 ZIP codes, 3 neighbouring counties, inside the Terre Haute 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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Clay County in one paragraph: 358 square miles in Indiana, 10 ZIP codes, a heating climate pressure read from the normals at TERRE HAUTE HULMAN RGNL AP, IN US, and housing that answers 5,235 heating degree days against 1,077 cooling degree days a year. TempReach USA is a referral service, not an HVAC company — one call connects you with an independent local HVAC technician serving this county.
One record, one county: the normals at TERRE HAUTE HULMAN RGNL AP, IN US — 5,235 heating degree days, 1,077 cooling degree days, 40.84 inches of precipitation, an average temperature of 53.5 degrees — applied to Clay County's own 358 square miles and its 10 ZIP codes. The figures are the Terre Haute metro's; the ground they are applied to, lying east of the Terre Haute metro's centre, is this county's alone, and this section reads the two together.
Read the climate record and the county's pressure names itself. Heating degree days outnumber cooling degree days at TERRE HAUTE HULMAN RGNL AP, IN 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 Clay County's 358 square miles — from Brazil 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: 358 square miles is a lot of roofs for a service map to hold, and Clay County's homes divide between its listed communities — Brazil, Clay City — 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 Clay County is a small climate-and-housing district of its own. The county's 10 codes — 47833, 47834, 47840, 47841 among them — all read the same normals from TERRE HAUTE HULMAN RGNL AP, IN 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.
Read the map around Clay County and a working region appears: Sullivan County, Vermillion County, Vigo County are the neighbouring names at the head of its list of 3, and together these counties form the ground a local technician actually covers. The county line decides which page describes a home; it does not decide the weather the home's system faces, the decade its street was built in, or the season its diary fills. Those are regional — and the region, on this site, is a set of county pages that link to one another, as the cards below do.
Extremes, not averages, fill Clay County's emergency diary, and the record names them precisely: 23.6 days a year at 90 degrees or above, 110.3 nights at or below freezing. Between those figures sits the ordinary year — an average of 53.5 degrees, 40.84 inches of rain — in which systems mostly age quietly. The two ends are when ageing becomes failure, which is why the county's dominant heating pressure, the taller of its two peaks, sets the rhythm of its maintenance year as well.
The county record names Brazil, Clay City among Clay 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 358 square miles of Indiana. 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.
The county's position frames its housing as well. Clay County lies east of the Terre Haute metro's centre, roughly 13 miles out, and the metro's era mix — 41.9% built before 1960, 21.5% between 1960 and 1979, median year 1969 — 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 Clay County street belongs to is a local fact; that the bands exist, in these proportions, is the Census record this page is built on.
There is a reason the coverage on this page is described county-first. Heating and cooling demand is generated house by house, and houses sit in counties: in Clay County's case, across 358 square miles that hold 2 listed communities and 10 ZIP codes, east of the Terre Haute metro's centre. The metro frame matters — the station, the housing eras, the problem ranking all come from it — but the county is where the frame touches the ground, and the ground is where the systems are.
City pages carry the metro-wide homework — housing eras, the problem ranking, services in depth. This county sits inside their coverage.
Population 8,064
Population 1,186
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 Clay County and the Terre Haute 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