Jefferson Parish, Louisiana, read at county level: 17 ZIP codes and 8 communities inside the New Orleans 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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Start here if you read nothing else: this page covers Jefferson Parish, Louisiana — 301 square miles, 8 listed communities, a centroid south of the New Orleans metro's centre. Its climate record, from NEW ORLEANS ALVIN CALLENDER FL, LA US, sets a humid pressure on its systems. TempReach USA publishes the homework and routes the call; an independent local HVAC technician serving the county does the work.
The climate figures on this page are the primary metro's NOAA 1991-2020 normals — climate normals recorded at NEW ORLEANS ALVIN CALLENDER FL, LA US, the station for the New Orleans metro this county belongs to. An average year there brings 1,425 heating degree days, 2,615 cooling degree days, 63.8 inches of precipitation, 64.4 days at 90 degrees or above and 10.8 nights at or below freezing, around an average temperature of 68.2 degrees.
Jefferson Parish is humid country, and its systems know it. 64.4 days a year at 90 degrees or more arrive carrying moisture, and every cooling system from Metairie to the county's edge spends its season wringing that moisture out — work measured in gallons of condensate, not just in degrees. The failures follow the load: clogged drains, overwhelmed coils, indoor air that never quite dries. Local technicians read the county that way: airflow and drainage checked as carefully as refrigerant, and maintenance kept ahead of the wettest weeks.
The county's neighbours frame it as well: St. Charles Parish, St. James Parish, St. John the Baptist Parish are among the 6 counties on its neighbour list, and together they form the working ground around Jefferson Parish's own 301 square miles. A system near a shared border lives in both counties' weather at once, whichever page describes its home — the pages divide the map so the record can be read county by county, and the links between them keep the whole in view.
17 ZIP codes reach into Jefferson Parish's 301 square miles, among them 70001, 70002, 70003, 70005 — an average of 17.7 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.
The counties around Jefferson Parish include St. Charles Parish, St. James Parish, St. John the Baptist Parish, and the whole group shares the New Orleans metro's climate record from NEW ORLEANS ALVIN CALLENDER FL, LA US. What the neighbours do not share is this county's ground: 301 square miles, 17 ZIP codes, a centroid south of the New Orleans metro's centre. Service patterns cross the county line freely — a cold week fills diaries on both sides of it — but the mix of housing and systems on each side is its own, which is why each county in the group carries its own page.
A year in Jefferson Parish, 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 2,615 cooling degree days, the second as 1,425 heating degree days; 63.8 inches of precipitation fall across both, and the average temperature of 68.2 degrees is simply the figure the two workloads leave behind when they are averaged. The county's humid pressure is whichever workload the count puts first — and the maintenance year is arranged around that ordering.
Start the county at its named places: Metairie, Kenner, Terrytown, Harvey head a list of 8 communities recorded in Jefferson Parish. The list matters to heating and cooling because communities concentrate the housing — a street of homes built in one decade produces one kind of service diary, the next community's different decade produces another — and because the roads between the named places are part of the working day here. The county page's climate record is shared; the ground it lands on is divided among these names.
Age is the county's second climate. The New Orleans metro's median home was built in 1973, and 64.7% of its homes predate 1980 — in Jefferson Parish, that share is the older districts and the long-settled communities, where ductwork from an earlier equipment era still serves replacement systems. The newer share, 15.3% built since 2000, concentrates in the county's growth edges. The service diary divides along that line: deep equipment-and-duct conversations at the old end, first-replacement and control conversations at the new one.
The county is worth a page of its own because its facts do not reduce to its metro's. The New Orleans metro supplies the climate station and the housing profile, but Jefferson Parish supplies everything at ground level: 301 square miles, its own communities and codes, its own neighbours — St. Charles Parish, St. James Parish, St. John the Baptist Parish among the 6 on its list — and its own position, south of the New Orleans 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 138,995
Population 65,113
Population 25,844
Population 21,710
Population 17,468
Population 16,761
Population 13,170
Population 11,775
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 Jefferson Parish and the New Orleans 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