AC Installation in Aberdeen, SD
A new air conditioner in Aberdeen will run from June through August every year. Tell us about the house, and a licensed contractor who covers Brown County will get in touch.
Tell us about the job
It takes about a minute.
Three months of real heat, and hail to think about
Aberdeen gets three months of cooling weather, June through August, with summer afternoons averaging 81°F. That is not a long season, but it is a real one, and a new air conditioner has to be sized to handle those afternoons without straining.
Brown County has also logged 99 hail events and 187 damaging wind events over the past ten years, with hail up to 4 inches recorded. An outdoor condenser sits exposed to that. Any new install built since 2023 has to meet a federal minimum of 13.4 SEER2, so that baseline is already covered, but where the unit sits and how it is protected matters here too.
- 3 months
- June through August, your air conditioner is on duty
- 81°F
- the average summer afternoon it cools against
- 99 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 Brown County home, from EIA household energy data, South Dakota fuel prices and NOAA climate normals. Your home will differ.
In South Dakota, HVAC licensing for homes is left to the cities and towns.
South Dakota has no state license for HVAC contractors. That rule is left to cities and towns, so whether this contractor needs a license depends on where in Brown County the house sits, not on any state record.
What covers this job here is the permit. An air conditioner installation in most cities and counties needs a permit from the local building office, and the work gets inspected once it is done. That inspection checks that the installation was done right. It is not a license and it does not test the contractor beforehand, it checks the work after.
Source: South Dakota Legislature
- What size air conditioner does my house need?
- The right size comes from a load calculation, not a guess based on square footage. A contractor looks at your insulation, your windows, how much shade your house gets, and the layout of your ductwork before landing on a number. An oversized unit cools the air fast but shuts off before it pulls the humidity out, so the house feels clammy even at the right temperature. An undersized one runs constantly all summer and still can't keep up on the hottest afternoons. Summer afternoons here average 81°F, which is warm but not extreme, so a properly sized system should be able to keep up without running nonstop.
- Should I replace the whole system or just the outdoor unit?
- In most cases, replace both at the same time. The outdoor condenser and the indoor coil are matched to work together, and pairing a new condenser with an old coil often means the system never hits the efficiency it's rated for. If your indoor coil is old enough that the outdoor unit needs replacing, it's usually close to the end of its own life anyway. A contractor can check the age and condition of the coil and tell you whether it's worth keeping.
- Do HVAC contractors in Aberdeen need a state license to work on my home?
- South Dakota doesn't issue a state HVAC license. Licensing is handled city by city, so whether a contractor needs one depends on where your house sits, not on a statewide rule. What does apply almost everywhere is a permit. Installing a new air conditioner typically requires a permit from the local building office, and an inspection once the work is finished.