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Sizing is what a contractor has to settle before anything else on a heat pump install in this parish. Homes in St. Landry Parish, LA run heat about five months a year, from November through March. That heating load is modest enough that an oversized unit will short-cycle, and an undersized one will run its auxiliary resistance heat harder than it should whenever outdoor temperatures drop toward their seasonal floor. A contractor working through the load calculation here is deciding not just what the equipment does in January, but whether the refrigerant circuit and the backup element are matched to a parish where the compressor earns its wear in a short, defined window.
Ductwork that was sized for equipment no longer in the house is where a heat pump installation in St. Landry Parish either works or stalls. Half the homes in St. Landry Parish, Louisiana were built in 1980 or earlier (2020-2024 ACS 5-year). A house built that long before modern heat pump standards arrived was ducted to what the builder had in mind at the time, not what a contractor is putting in today. If the existing duct system cannot handle the airflow a new unit requires, the contractor has to address that before the equipment question matters. The electrical service gets the same look: older panels were not designed around the loads a heat pump draws.
What Gets Installed With a New Heat Pump
The outdoor unit sits on a pad beside the house and holds the compressor and the condenser coil. This is the piece a homeowner sees every day. Inside, the air handler mounts in a utility closet, basement, or attic and moves conditioned air through the home.
A refrigerant line set runs between the outdoor unit and the air handler, connecting the two halves of the system. A thermostat mounts on an interior wall and gives the homeowner control over when and how the system runs.
The drawing shows a typical layout, and a licensed contractor determines exactly what fits and where in this particular house.
Get matched in St. Landry ParishSt. Landry Parish, by the numbers
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.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 EstimatesSt. Landry Parish, Louisiana holds 37,229 housing units (2020-2024 ACS 5-year).
U.S. Census Bureau, 2020-2024 American Community Survey 5-Year EstimatesOwners 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 EstimatesCodes & Standards Governing Heat Pump Installation in St. Landry Parish, Louisiana1 sourced rules and standards
Licensing Rules for 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.
Severe Weather Events in St. Landry Parish
Weather puts a measurable load on heating and cooling equipment, and that load varies by place. A heat pump sized and installed for what St. Landry Parish actually sees will run differently than one spec'd for somewhere else.
79 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.