HVAC Installation in Thibodaux, LA
A new system here will heat from November through February and cool from April through October every year. Tell us about the house, and a licensed contractor who covers Lafourche Parish will get in touch.
Tell us about the job
It takes about a minute.
Eleven months of work, most years
In Thibodaux, a new system only gets four months to rest. Cooling runs April through October, seven months, with afternoons averaging 90°F. Heat comes on November through February, when nights average 47°F. That leaves one month the system isn't carrying one load or the other.
More than two thirds of homes here heat with electricity, so the same system likely handles both jobs. Summer is the harder season by far, seven months against four, and that's where the sizing and the efficiency of the unit matter most. Louisiana also sees its share of wind, sixteen damaging wind events over the past ten years, and about half of households lost power for at least a day in 2024. Whatever goes in should be able to come back on its own once the power does.
- 4 months
- November through February, your system heats
- 7 months
- April through October, it cools
- 47°F
- the average winter night it heats against
- 90°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Louisiana requires HVAC contractors to hold a state license.
The Louisiana State Licensing Board for Contractors tests and licenses the contractor, not the job. That means the license tells you the person or company running the work has been vetted by the state. It does not mean the board signs off on your particular furnace or condenser once it is in.
That is where the local building office comes in. Replacing a heating and cooling system in most cities and parishes needs a permit, and the finished work gets inspected before it is signed off. The license tells you who is allowed to do the job. The permit and inspection are what confirms this specific installation was done right.
Source: Louisiana State Licensing Board for Contractors
- When should I replace my HVAC system?
- Once repairs start happening every year or two, or the system can't keep up on the hottest afternoons, it's time to start planning a replacement. Homes here run cooling from April through October, seven months of the year, so an air conditioner that struggles in that stretch is going to leave you uncomfortable most of the year, not just once in a while. Age matters too. An old unit that needs frequent service calls is also less efficient than newer equipment, so the repairs pile up while the bills climb at the same time. If a contractor tells you a repair is just a stopgap, that's usually the sign to stop patching and replace it.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, yes, it usually makes sense to do them together. A furnace and air conditioner installed at the same time are matched to work with each other, and a mismatched pair, like an old furnace paired with a new coil, can end up running less efficiently than either would on its own. That said, if one system is much newer than the other, there's no reason to replace something that still has years left in it. A contractor can look at the age and condition of each system and tell you honestly whether pairing them makes sense for your house.
- What happens during an HVAC installation?
- A contractor removes the old equipment, sets the new furnace, air conditioner or heat pump in place, and connects it to the ductwork, the electrical, and, for gas furnaces, the gas line. Refrigerant lines get connected and checked for leaks, the electrical connections are tested, and the system gets run through a cycle to confirm it's heating and cooling the way it should. Replacing this kind of system needs a permit from the local building office, and the finished work gets inspected before it's signed off. That inspection confirms the installation was done to code, which matters for both safety and for the equipment running the way it's supposed to.