Louisiana AC Install

AC Installation in Opelousas

Serving Opelousas and every community across St. Landry Parish.

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Step 1 of 3: Equipment
A single-story red brick building with a hipped shingle roof, a white door and white-framed windows, fronted by a large asphalt parking area with sun glare, surrounded by green deciduous trees under a bright hazy sky.

Sizing a central AC system in St. Landry Parish is not a generic calculation a contractor runs from a catalog. Homes in St. Landry Parish, LA run cooling about six months a year, from May through October. The compressor, the condenser fan, and the contactor carry that load every time the system cycles, and a unit that is even modestly undersized will run longer per cycle, push the compressor harder, and wear its components down faster than a properly sized one would. A contractor here needs to know the structure's square footage, insulation, window exposure, and duct condition before they can specify equipment that will hold up through a full season rather than just a first summer.

NOAA National Centers for Environmental Information, nClimDiv county and statewide normals, 1991-2020.
Interior of a garage with concrete block walls, a closed white sectional overhead door, exposed steel beams and metal ductwork on the ceiling, a folding step ladder and a large white bag on the floor.

Ductwork in a house runs where it was put, and what it was sized for is not always what a contractor is being asked to connect to now. Half the homes in St. Landry Parish, Louisiana were built in 1980 or earlier (2020-2024 ACS 5-year). That means a substantial share of the housing stock here has duct runs laid out around equipment that looked nothing like what gets installed today. Before a new central AC unit can be sized or quoted, the existing duct system has to be evaluated for whether it will carry what the new equipment pushes through it. The electrical service gets the same look. Both are fixed to the house and neither changes cheaply.

U.S. Census Bureau, 2020-2024 American Community Survey 5-Year Estimates

What Gets Installed With a New Central AC

Isometric line illustration of a cutaway single-story house showing interior rooms with furniture, ceiling ductwork, an indoor air handler, and an outdoor condenser unit connected by lines along the exterior wall.

The outdoor condenser unit sits on a pad outside the house and holds the compressor and condenser coil, which are the mechanical heart of the system. Inside, the air handler or furnace-based evaporator cabinet stands in a utility space, attic, or closet and holds the evaporator coil and blower that move conditioned air through the home.

A refrigerant line set runs between the two units, carrying refrigerant through insulated copper lines that connect the outdoor and indoor sides into a single working system. The thermostat mounts on an interior wall and serves as the control point, telling the system when to run and when to stop.

The drawing shows the typical layout of these components, and a licensed contractor determines exactly how each one is positioned and connected in your specific home.

Get matched in St. Landry Parish

St. Landry Parish, by the numbers

79

79 severe weather events were recorded in St. Landry 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.
1980

Half the homes in St. Landry Parish, Louisiana were built in 1980 or earlier (2020-2024 ACS 5-year).

U.S. Census Bureau, 2020-2024 American Community Survey 5-Year Estimates
37,229

St. Landry Parish, Louisiana holds 37,229 housing units (2020-2024 ACS 5-year).

U.S. Census Bureau, 2020-2024 American Community Survey 5-Year Estimates
70.1%

Owners occupy 70.1% of the occupied homes in St. Landry Parish, Louisiana (2020-2024 ACS 5-year).

U.S. Census Bureau, 2020-2024 American Community Survey 5-Year Estimates
Codes & Standards Governing Central AC Installation in St. Landry Parish, Louisiana9 sourced rules and standards

What an HVAC Installation in St. Landry Parish 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.

U.S. Department of Energy10 CFR 430.32, Energy and water conservation standards and their compliance dates, Electronic Code of Federal Regulations.Verified 2026-09-10

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.

U.S. Department of Energy10 CFR 430.32, Energy and water conservation standards and their compliance dates, Electronic Code of Federal Regulations.Verified 2026-09-10

Split-system central air conditioners manufactured between January 1, 2015 and December 31, 2022 had to meet 13 SEER, the metric that preceded SEER2.

U.S. Department of Energy10 CFR 430.32, Energy and water conservation standards and their compliance dates, Electronic Code of Federal Regulations.Verified 2026-09-10

Single-package central air conditioners manufactured on or after January 1, 2023 must meet a federal minimum of 13.4 SEER2.

U.S. Department of Energy10 CFR 430.32, Energy and water conservation standards and their compliance dates, Electronic Code of Federal Regulations.Verified 2026-09-10

Space-constrained central air conditioners manufactured on or after January 1, 2023 must meet a federal minimum of 11.7 SEER2.

U.S. Department of Energy10 CFR 430.32, Energy and water conservation standards and their compliance dates, Electronic Code of Federal Regulations.Verified 2026-09-10

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.

U.S. Department of Energy10 CFR 430.32, Energy and water conservation standards and their compliance dates, Electronic Code of Federal Regulations.Verified 2026-09-10

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.

U.S. Environmental Protection AgencyU.S. Environmental Protection Agency, Technology Transitions HFC Restrictions by Sector, implementing the American Innovation and Manufacturing Act.Verified 2026-09-10

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.

U.S. Environmental Protection AgencyU.S. Environmental Protection Agency, Technology Transitions HFC Restrictions by Sector, implementing the American Innovation and Manufacturing Act.Verified 2026-09-10

Licensing Rules for Contractors in St. Landry 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.

Louisiana State Licensing Board for ContractorsLa. R.S. tit. 37 ch. 24 (Louisiana State Licensing Board for Contractors)Verified 2026-09-13

Severe Weather Events in St. Landry Parish

Storm activity puts a hard load on cooling equipment, pushing it through conditions that steady, mild climates never demand. How much of that load a system carries here shapes what kind of installation makes sense for this parish.

Severe weather events by county — St. Landry Parish
3020100
201520162017201820192020202120232024
21

79 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.