The county-level homework for Madison County, Alabama — its 802 square miles, its 22 ZIP codes, its place inside the Huntsville metro's coverage. TempReach USA connects homeowners here with independent local HVAC technicians; the record behind the routing is on this page.
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The short version of this page: Madison County runs to 802 square miles, its weather is the record kept at HUNTSVILLE INTL AP, AL US — 2,831 heating degree days, 2,107 cooling degree days — and its systems live under a heating pressure. One call to TempReach USA, a referral service rather than an HVAC company, connects you with an independent local HVAC technician serving the county.
Before the narrative, the numbers themselves, because everything after them is commentary: at HUNTSVILLE INTL AP, AL US, the station whose NOAA 1991-2020 normals this county is read through, an average year holds 61.6 days at 90 degrees or above, 55.6 nights at or below freezing, 54.29 inches of precipitation and degree-day totals of 2,831 heating against 2,107 cooling. Spread over 802 square miles, with the county's centroid east of the Huntsville metro's centre and roughly 12 miles from the centre it is measured against, that record is Madison County's working climate.
The heating season also has an address pattern in Madison County. Its 22 ZIP codes divide 802 square miles into service ground where the same January night lands on older streets, subdivisions and edge communities at once, and the county's position — east of the Huntsville metro's centre, roughly 12 miles from the metro's centre — shapes which parts of the county feel the Huntsville metro's cold at full strength. The systems answer accordingly: one long heating season, read ZIP by ZIP, with the oldest furnaces and heat exchangers carrying the heaviest share of it.
Set the county inside its metro and the picture completes. Madison County answers to the Huntsville metro's data — its housing profile, its problem ranking, its climate station — but the county is where that data touches ground: 11 communities, 22 ZIP codes, one county's worth of systems ageing under the record kept at HUNTSVILLE INTL AP, AL US. This page is that ground-level reading, kept separate from the metro page so the local detail is never averaged away.
22 ZIP codes reach into Madison County's 802 square miles, among them 35741, 35748, 35749, 35750 — an average of 36.4 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: Madison County lies east of the Huntsville metro's centre, roughly 12 miles from the metro's centre as the map measures it, with Limestone 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.
Consider what one year asks of a system in Madison County: a cooling season measured at 2,107 degree days, a heating season at 2,831, 61.6 days of serious heat and 55.6 freezing nights, and 54.29 inches of precipitation working on every outdoor unit through all of it. No single figure is remarkable; the combination is the county's climate, and it is the combination a system has to survive for fifteen or twenty years. The service patterns described on this page are that arithmetic, playing out across 802 square miles of housing.
There is a practical reason this page names Madison County's communities one by one. A heating or cooling system belongs to a house, a house belongs to a community, and the community's building decade is the strongest single clue to what the system will need — the 11 places recorded here, from Huntsville through Harvest and beyond, each carry that clue in their streets. The metro data on the Huntsville page describes the whole region; this list is where the description becomes local.
The growth figures deserve their own reading in Madison County. 38.1% of the Huntsville 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 31.8% 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.
The county is worth a page of its own because its facts do not reduce to its metro's. The Huntsville metro supplies the climate station and the housing profile, but Madison County supplies everything at ground level: 802 square miles, its own communities and codes, its own neighbours — Limestone County among the 1 on its list — and its own position, east of the Huntsville metro's centre. The metro page and this page link to each other because neither half of that picture stands well without the other.
City pages carry the metro-wide homework — housing eras, the problem ranking, services in depth. This county sits inside their coverage.
Population 218,814
Population 58,335
Population 10,268
Population 6,624
Population 6,041
Population 3,765
Population 2,895
Population 2,678
Population 1,296
Population 971
Population 543
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 Madison County and the Huntsville 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