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Sizing a boiler for this house is not a generic calculation. Homes in St. Landry Parish, LA run heat about five months a year, from November through March. The burner, heat exchanger, and ignition system cycle repeatedly through those months, and a unit that is undersized for the load starts more often than it should, wearing those components faster than a correctly specified system would. A contractor quoting a replacement has to establish actual heat loss for the structure before settling on output, because an install that looks adequate on paper can fall short once the season starts running it hard.
Ductwork laid down for equipment that no longer exists is what a contractor encounters in a large share of St. Landry Parish homes, and it is what decides how a boiler installation actually goes. Half the homes in St. Landry Parish, Louisiana were built in 1980 or earlier (2020-2024 ACS 5-year). That gap between what the house was built around and what a new boiler requires shows up in the duct runs and in the electrical service: whether each will carry the load a modern unit puts on it is the question a contractor has to answer before the equipment is ever priced. A house that needs its distribution system brought up to carry the new load is a different job than one that does not.
What a Boiler Installation Puts in Your Home
The boiler itself sits in a mechanical room, basement, or utility closet and is the unit that heats water for the whole system. Wall-mounted or floor-standing, it is the central piece a contractor sets in place first. Attached to it are the supply and return lines that carry hot water out to the home and back again.
Radiators or hydronic baseboards run along the walls of each room and release heat into the living space. A circulator pump, mounted close to the boiler, keeps water moving through the loop. An expansion tank and pressure relief valve sit nearby, giving the system room to handle changes in water pressure as it heats.
The drawing shows a typical layout, and a licensed contractor determines exactly what applies to your home and its existing setup.
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 for Boiler Installation in St. Landry Parish, Louisiana1 sourced rules and standards
Licensing Rules for HVAC Work 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.
Severe Weather Events in St. Landry Parish
Weather puts hours on heating equipment. How hard a boiler works over its life is shaped by what the climate outside demands of it, and St. Landry Parish sets those demands.
79 severe weather events, 2015–2024. Source: NOAA National Centers for Environmental Information, Storm Events Database.