Ascension Parish, Louisiana, read at county level: 7 ZIP codes and 2 communities inside the Baton Rouge metro's coverage, with the climate record and service pressures set out below. TempReach USA connects you with an independent local HVAC technician serving the county.
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Ascension Parish in one paragraph: 290 square miles in Louisiana, 7 ZIP codes, a humid climate pressure read from the normals at BATON ROUGE RYAN AP, LA US, and housing that answers 1,534 heating degree days against 2,818 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.
The climate figures on this page are the primary metro's NOAA 1991-2020 normals — climate normals recorded at BATON ROUGE RYAN AP, LA US, the station for the Baton Rouge metro this county belongs to. An average year there brings 1,534 heating degree days, 2,818 cooling degree days, 61.94 inches of precipitation, 96.4 days at 90 degrees or above and 18.4 nights at or below freezing, around an average temperature of 68.5 degrees.
Read the climate record and the county's pressure names itself. Precipitation of 61.94 inches a year at BATON ROUGE RYAN AP, LA US, layered over 2,818 cooling degree days, means Ascension Parish's heating and cooling is moisture management wearing a temperature costume. Homes across its 290 square miles ask their systems to dry the air as much as to cool it — and the systems that answer well are the ones sized, charged and drained with that double duty in mind.
The county's ground shapes the work in one more way: 290 square miles is a lot of roofs for a service map to hold, and Ascension Parish's homes divide between its listed communities — Prairieville, Gonzales — 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.
7 ZIP codes reach into Ascension Parish's 290 square miles, among them 70346, 70725, 70734, 70737 — an average of 41.4 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.
Ascension Parish sits alongside East Feliciana Parish, Iberville Parish, Livingston Parish in the Baton Rouge 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 Ascension Parish's own share of the picture separate.
Consider what one year asks of a system in Ascension Parish: a cooling season measured at 2,818 degree days, a heating season at 1,534, 96.4 days of serious heat and 18.4 freezing nights, and 61.94 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 290 square miles of housing.
The county record names Prairieville, Gonzales among Ascension Parish'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 290 square miles of Louisiana. 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 growth figures deserve their own reading in Ascension Parish. 35.0% of the Baton Rouge 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 36.1% 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: 290 square miles of land in Louisiana, 2 listed communities, 7 ZIP codes, 9 neighbouring counties on the record, and a place inside the Baton Rouge 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.
Population 35,010
Population 12,748
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 Ascension Parish and the Baton Rouge 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