AC Installation in Columbus, MS
A new air conditioner in Columbus will run from May through September every year. Tell us about the house, and a licensed contractor who covers Lowndes County will get in touch.
Tell us about the job
It takes about a minute.
Five months of Columbus summer heat, every year
Your air conditioner runs from May through September here, with summer afternoons averaging 91°F. Any new central air conditioner installed today has to meet 14.3 SEER2, the federal minimum set in 2023.
Lowndes County has also logged 110 damaging wind events and 29 hail storms over the past ten years, with hail as large as 4.6 inches. Where the outdoor unit sits and how it's mounted matters here.
- 5 months
- May through September, your air conditioner is on duty
- 91°F
- the average summer afternoon it cools against
- 29 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
Going above the federal minimum saves little here, about $20 a year.
Estimates for a typical Lowndes 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.
Mississippi tests contractors before they can hold this license, and the state keeps a record of who holds one. That license belongs to the contractor, not to this specific job. It tells you the person doing the work has met the state's bar to do it, but it isn't issued job by job.
For an air conditioner installation, the license is what stands behind the contractor's name, but it isn't the only check on this job. Most cities and counties require a permit for this kind of installation, along with an inspection once the work is finished, so someone from the local building office looks at what was done before it's signed off.
Source: Mississippi State Board of Contractors
- What size air conditioner does my house need?
- The right size depends on your home's square footage, layout, insulation, windows, and ceiling height, not just a rule of thumb. A contractor works this out with a load calculation, which looks at your whole house rather than guessing off square footage alone. An oversized unit cools the air fast but shuts off before it pulls the moisture out, so rooms feel damp. An undersized one runs constantly and still can't keep up on a 91°F afternoon, which is about what Columbus sees on average in summer. Get the calculation done rather than matching whatever size is currently out there, especially if the house has had windows, insulation, or additions changed since the last system went in.
- Should I replace the whole system or just the outdoor unit?
- If the indoor and outdoor units were installed together and matched to each other, replacing just the outdoor unit usually means replacing both. Air conditioners are designed as matched pairs. The outdoor condenser and the indoor coil are sized and charged to work together, and pairing a new condenser with an old coil often means the system won't reach its rated efficiency, and it can shorten the life of the new equipment. A contractor can check whether your indoor coil is still compatible with current refrigerant and capacity standards before deciding. If the coil is old enough, replacing only the outdoor unit may not even be an option a manufacturer will warranty.
- Do HVAC contractors in Columbus 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. The license is held by the contractor, not issued per job, so it's worth asking to see it before work starts on your air conditioner. Separately, most cities and counties require a permit for installing a new air conditioner, along with an inspection once the work is finished. A licensed contractor should be familiar with pulling that permit as part of the job.