AC Installation in Sumrall, MS
A new air conditioner in Sumrall will run from May through October every year. Tell us about the house, and a licensed contractor who covers Lamar County will get in touch.
Tell us about the job
It takes about a minute.
Six months of Mississippi heat, every year
Sumrall homes run the air conditioner from May through October. Summer afternoons average 91°F, and a new system has to hold that line day after day for six months, not just on the hottest afternoons.
The outdoor unit sits outside through whatever the weather brings. Lamar County has seen 101 damaging wind events and 19 hail events over the past ten years, with hail up to 2.75 inches recorded. Any new central air conditioner installed now also has to meet the federal efficiency minimum of 14.3 SEER2.
- 6 months
- May through October, your air conditioner is on duty
- 91°F
- the average summer afternoon it cools against
- 19 hail events
- in ten years, and hail bends the fins on outdoor coils
- 13.4 SEER2
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
A higher-efficiency unit would save about $30 a year to run in Lamar County compared with a new unit at the federal minimum.
Estimates for a typical Lamar County home, from EIA household energy data, Mississippi fuel prices and NOAA climate normals. Your home will differ.
Mississippi requires HVAC contractors to hold a state license.
The board tests contractors before they get that license, and it keeps a record of who holds one. That license belongs to the contractor, not to any single job, so the same license covers this installation and the next one they do.
For a job like this, most cities and counties in Mississippi also require a permit before the work starts and an inspection once it's done. That inspection is separate from the state license. The license tells you the contractor was tested and is on record with the state. The permit and inspection tell you the installation itself was checked once it went in.
Source: Mississippi State Board of Contractors
- What size air conditioner does my house need?
- It depends on your home's square footage, insulation, window area, and layout, not just a rule of thumb. A contractor works this out with a load calculation, sizing the unit to your house rather than guessing off a chart. Getting this right matters more here than in milder places, since summer afternoons average 91°F and the system has to keep up with that heat for six months, May through October. Too big and it cools too fast without pulling humidity out. Too small and it runs constantly without catching up.
- Should I replace the whole system or just the outdoor unit?
- In most cases both the outdoor unit and the indoor coil should be replaced together. They are matched to work as a pair, and putting a new outdoor unit on an old indoor coil often means the two don't perform the way either was designed to. A contractor can look at the age and condition of your indoor coil and tell you whether it can pair with new equipment or needs to go too.
- Do HVAC contractors in Sumrall need a state license to work on my home?
- Yes. Mississippi requires HVAC contractors to hold a state license, issued through the State Board of Contractors. That license covers the contractor as a business, not each individual job. Installing an air conditioner also usually requires a permit from the local building office and an inspection once the work is finished, so ask whether that's included when you get a quote.