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Get the size wrong on a central AC install here and the compressor pays for it. Homes in Tangipahoa Parish, LA run cooling about six months a year, from May through October. A system undersized for that load cycles constantly, running the compressor and condenser fan hard through every hot week instead of reaching steady-state and coasting. The contactor takes repeated starts. The coil never fully dehumidifies the house. A contractor quoting this job has to run a proper load calculation first, accounting for the house envelope and duct layout, before any equipment gets specified.
Ductwork sized for a previous generation of equipment does not automatically carry what a new central AC system will push through it. Half the homes in Tangipahoa Parish, Louisiana were built in 1993 or earlier (2020-2024 ACS 5-year). A contractor installing a new system in this parish has to assess the existing duct layout before anything else, because a mismatch between the old distribution network and the new unit's airflow requirements means portions of the ductwork get replaced, not just the equipment. The electrical service gets the same look, since a panel fitted for an older unit may not carry the draw of a modern one. What the house already has determines the scope of the job.
What Gets Installed With a New Central AC
The outdoor condenser unit sits on a concrete pad beside the house and holds the compressor and condenser coil, the hardware that does the heaviest work in the system. Inside, the air handler mounts in a utility closet, attic, or basement and contains the blower fan and the evaporator coil, which is where the air in your home actually passes through the equipment.
A refrigerant line set runs between the two units, carrying refrigerant back and forth through insulated copper tubing. The thermostat goes on an interior wall and is the control point for the whole system, telling the air handler and condenser when to run and when to stop.
The drawing shows a typical layout, and a licensed contractor determines exactly what applies to your house based on what they find on-site.
Get matched in Tangipahoa ParishTangipahoa Parish by the numbers
86 severe weather events were recorded in Tangipahoa Parish, Louisiana between 2015 and 2024.
NOAA National Centers for Environmental Information, Storm Events Database, bulk CSV export, events 2015-01-01 through 2024-12-31.Half the homes in Tangipahoa Parish, Louisiana were built in 1993 or earlier (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesTangipahoa Parish, Louisiana holds 60,006 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners occupy 70.3% of the occupied homes in Tangipahoa Parish, Louisiana (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesCodes & Standards Governing Central AC Installation in Tangipahoa Parish, Louisiana9 sourced rules and standards
What the Installation Actually Looks Like
Split-system central air conditioners rated below 45,000 Btu/h manufactured on or after January 1, 2023 must meet a federal minimum of 13.4 SEER2.
Split-system central air conditioners rated at or above 45,000 Btu/h manufactured on or after January 1, 2023 must meet a federal minimum of 13.4 SEER2.
Split-system central air conditioners manufactured between January 1, 2015 and December 31, 2022 had to meet 13 SEER, the metric that preceded SEER2.
Single-package central air conditioners manufactured on or after January 1, 2023 must meet a federal minimum of 13.4 SEER2.
Space-constrained central air conditioners manufactured on or after January 1, 2023 must meet a federal minimum of 11.7 SEER2.
Federal efficiency standards for split-system central air conditioners and heat pumps are set on each certified combination of outdoor unit and indoor coil rather than on the outdoor unit alone.
Residential and light commercial air conditioning and heat pump systems assembled in the field, including mini-splits and unitary systems, may not be installed on or after January 1, 2025 using a refrigerant with a global warming potential above 700.
A field-assembled system whose specified components were all manufactured or imported before January 1, 2025 carries no installation compliance date under the refrigerant restrictions and may still be installed.
Licensing Rules for Tangipahoa Parish, Louisiana
Louisiana requires an active state contractor licence: it is unlawful to engage or continue in the business of contracting, or to act as a contractor, without one.
Severe Weather Events in Tangipahoa Parish
Storm activity puts real stress on cooling equipment, from power surges to extended run times that compound wear. How hard a system works over its life is a local question, and the weather record for this parish is part of that answer.
86 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.