AC Installation in Columbia, SC
A new air conditioner in Columbia will run from May through September every year. Tell us about the house, and a licensed contractor who covers Richland County will get in touch.
Tell us about the job
It takes about a minute.
Five months of Columbia heat, every year
Your air conditioner works from May through September here, with summer afternoons averaging 91°F. That is most of the warm part of the year spent running, and a unit that's undersized or on its last legs will struggle to keep up on the hottest days.
Columbia also sees its share of hail and wind, with 360 damaging wind events and 49 hail events recorded over the past ten years, one of them a hailstone 1.75 inches across. An outdoor condenser sits exposed to that weather, so a new install is also a chance to make sure it's placed and protected well. If you're installing new, any central air conditioner built since 2023 has to meet a federal minimum of 14.3 SEER2.
- 5 months
- May through September, your air conditioner is on duty
- 91°F
- the average summer afternoon it cools against
- 49 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 Richland County compared with a new unit at the federal minimum.
Estimates for a typical Richland County home, from EIA household energy data, South Carolina fuel prices and NOAA climate normals. Your home will differ.
- What size air conditioner does my house need?
- The right size comes from a load calculation, not the size of your current unit or a per-square-foot guess. A contractor measures your windows, insulation, ceiling height, and how much shade your house gets, then runs those numbers to find the tonnage your house actually needs. Too big and it cools the air fast but never runs long enough to pull the moisture out, so the house feels clammy. Too small and it runs constantly on those 91°F afternoons and still can't keep up. Have a contractor do the calculation rather than matching the old unit's size.
- Should I replace the whole system or just the outdoor unit?
- If your indoor coil and outdoor unit are different ages or different efficiency levels, replacing just the outdoor unit usually causes problems. The two are matched at the factory to work together, and pairing a new condenser with an old coil can mean poor cooling and a shorter life for the new equipment. Some older refrigerants also aren't compatible with new outdoor units at all. A contractor can check the age and condition of your indoor coil and tell you whether it can be reused or needs to go at the same time.
- Do HVAC contractors in Columbia need a state license to work on my home?
- Yes, HVAC contractors need a state license to do this work. Licensing means the contractor has passed testing on the trade and carries the insurance required to work in your home. Before hiring anyone, ask for their license number and confirm it's current.