One county, read on its own ground: Iowa County, Wisconsin — 0 communities, 11 ZIP codes, 3 neighbouring counties, inside the Madison 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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In brief: 763 square miles of Wisconsin, a climate read from MADISON DANE RGNL AP, WI US's normals, and a heating pressure as the county's dominant one — 7,138 heating degree days set against 627 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 Iowa County.
The station for this county's metro is MADISON DANE RGNL AP, WI US, and its NOAA 1991-2020 normals are the source of every figure in this section. Precipitation averages 37.13 inches a year; the temperature record averages 47.0 degrees, built from 8.6 days at 90 or above and 146.9 nights at or below freezing; the workload totals 7,138 heating degree days and 627 cooling degree days. Iowa County is read through that record throughout this page.
Heating writes this county's HVAC calendar. With 7,138 heating degree days against 627 cooling degree days in the normals recorded at MADISON DANE RGNL AP, WI US, the systems across Iowa County earn their keep in the cold half of the year: furnaces and heat pumps cycling through 146.9 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: 763 square miles is a lot of roofs for a service map to hold, and Iowa County's homes divide between its listed communities — — 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.
There is a scale fact hidden in Iowa County's ZIP codes: 11 codes across 763 square miles works out to 69.3 square miles per code, which makes a service call here a matter of ground as well as of systems. The codes on the metro-facing side of the county — the county sits west of the Madison metro's centre — and the codes at its far edge hold different ground, but both ends ask the same climate questions of their heating and cooling, at different distances.
Position first: Iowa County lies west of the Madison metro's centre, roughly 26 miles from the metro's centre as the map measures it, with Columbia County, Dane County, Green 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.
The precipitation figure earns its place in Iowa County's record: 37.13 inches a year at MADISON DANE RGNL AP, WI US, falling through both the cooling months and the heating ones. Rain loads condensate systems in summer, tests outdoor units and venting in winter, and keeps the ground around the county's 11 ZIP codes cycling between wet and dry in a way that shows up in crawl spaces and condensate lines. Set beside 8.6 hot days and 146.9 freezing nights, it completes the picture of what the county's equipment actually lives in.
Hold Iowa County up against its own neighbours and the missing place list stops looking like a gap. Columbia County, Dane County, Green County are among the 3 counties around it; some of them are lists of named towns, this one is 763 square miles of ground lying west of the Madison metro's centre, roughly 26 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.
The growth figures deserve their own reading in Iowa County. 28.6% of the Madison metro's homes were built since 2000 — the largest or near-largest band in many of its counties — and those homes are now old enough that their first systems are reaching replacement age together, subdivision by subdivision. Set against them, the 46.8% of the metro's stock that predates 1980 is deep into its second and third systems. One county, two replacement waves running at once, and a maintenance diary that has to serve both.
Put the county's coverage facts in one place and they read like this: 763 square miles of land in Wisconsin, 0 listed communities, 11 ZIP codes, 3 neighbouring counties on the record, and a place inside the Madison 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 Iowa County and the Madison 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