Overhead view of an outdoor AC condenser unit on a concrete pad next to a house with a dark shingle roof.

AC Installation in Denham Springs, LA

A new air conditioner in Denham Springs will run from April through October every year. Tell us about the house, and a licensed contractor who covers Livingston Parish will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
Aerial view of a gray central air conditioning condenser unit on a concrete pad next to a house with vinyl siding.

Seven months of Denham Springs heat to plan for

Your air conditioner in Denham Springs runs April through October, seven months a year. On summer afternoons that average 91°F, it is cycling on and off most of the day just to hold the house steady. That is a long stretch of run time, and it is why the unit you choose has to be sized and installed right for this climate, not just any climate.

Any new central air conditioner installed today has to meet a federal minimum of 14.3 SEER2. That is the floor, not a special feature. Livingston Parish has also seen 59 damaging wind events and 17 hail events over the last ten years, with hail up to 1.75 inches. An outdoor unit here takes weather, so where and how it gets installed matters as much as the equipment itself.

7 months
April through October, your air conditioner is on duty
91°F
the average summer afternoon it cools against
17 hail events
in ten years, and hail bends the fins on outdoor coils
13.4 SEER2
the federal minimum any new unit must meet
Isometric line illustration of a cutaway single-story building showing interior rooms, ceiling ductwork and an air handler, connected by lines to an outdoor condenser unit beside the exterior wall.
Your air conditioner works hardest from May through September.

NOAA nClimDiv, 1991–2020 normals

An outdoor air conditioning condenser unit on a concrete pad next to the gray vinyl siding of a residential home.

A higher-efficiency unit would save about $30 a year to run in Livingston Parish compared with a new unit at the federal minimum.

  • A higher-efficiency unit$430 a year
  • A new unit at the federal minimum, 14.3 SEER2$460 a year

Estimates for a typical Livingston Parish home, from EIA household energy data, Louisiana fuel prices and NOAA climate normals. Your home will differ.

Louisiana requires HVAC contractors to hold a state license.

Louisiana licenses HVAC contractors through the Louisiana State Licensing Board for Contractors. That license belongs to the contractor, not to any one job, so it is not issued fresh for this particular install.

In most cities and counties here, putting in a new air conditioner needs a permit from the local building office, and an inspector checks the work once it is done. The license says the contractor is one the state has on record. The permit and inspection are what stand behind this installation itself.

Source: Louisiana State Licensing Board for Contractors

What size air conditioner does my house need?
The right size depends on your square footage, your ceiling height, how much shade and sun your walls and windows get, and how well the house holds conditioned air. A contractor works this out with a load calculation, not a rule of thumb based on square footage alone. An oversized unit cools the air fast but shuts off before it pulls the humidity out, so the house feels clammy even at the temperature you set. An undersized one runs constantly through a Denham Springs summer and still can't keep up on the hot afternoons. Have a contractor measure the house rather than matching the size of what's already out there.
Should I replace the whole system or just the outdoor unit?
If the indoor coil and outdoor unit weren't installed together, replacing just the outdoor unit can cause problems even when the parts seem to match on paper. Manufacturers match coil and condenser as a set, and pairing a new outdoor unit with an old indoor coil often means the system won't perform or hold its warranty the way it should. Age matters too. If the indoor coil is old enough that it's near the end of its own life, replacing only the outdoor unit means paying to open the system up again sooner than you'd like. A contractor can check whether your existing coil is a valid match for a new condenser before you decide.
Do HVAC contractors in Denham Springs need a state license to work on my home?
Yes. Louisiana requires HVAC contractors to hold a state license, issued through the Louisiana State Licensing Board for Contractors. The license belongs to the contractor, not to any single job, so it covers them across the work they do, including an AC installation at your house. Most cities and counties also require a permit for installing a new air conditioner, along with an inspection once the work is finished, so ask whether that's been pulled for your job.