Overhead view of an air conditioning condenser unit on a concrete pad next to a house with asphalt shingle roofing and vinyl siding.

AC Repair in Vermillion, SD

Air conditioners here run from June through August. If yours quits, tell us what it's doing and a licensed contractor who covers Clay County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
An outdoor air conditioning condenser unit mounted on a concrete pad next to a blue-sided residential house at sunset.

Three months, and storms in between

Your air conditioner in Vermillion only gets three months to do its job, June through August, with afternoons averaging 83°F. That is not a long season, but it is a demanding one, and the unit has to be ready to run hard on every one of those days.

Clay County has also seen 26 hail events and 40 damaging wind events over the past ten years, with hail up to 1.75 inches. Hail that size can bend the fins on your outdoor coil, and a coil with bent fins can't shed heat well. High wind can knock the unit out of level or drive debris into the cabinet. When any of that happens, you notice the system running longer than it used to without the house getting any cooler.

3 months
June through August, your air conditioner is on duty
83°F
the average summer afternoon it cools against
26 hail events
in ten years, and hail bends the fins on outdoor coils
40 wind events
in ten years, and wind drives debris into outdoor units
Isometric cutaway illustration of a house showing interior ductwork, an air handler and furnace unit, and an outdoor condenser connected by lines outside the wall.
Your air conditioner works hardest from June through August.

NOAA nClimDiv, 1991–2020 normals

An outdoor central air conditioning unit mounted on a concrete pad beside a blue-sided house at sunset.

A new air conditioner would save little on running costs in Clay County, so the repair decision comes down to the unit's condition.

  • A new one at the federal minimum, 13.4 SEER2$200 a year
  • An older air conditioner$220 a year

Estimates for a typical Clay County home, compared with an older unit built to the previous federal minimum, from EIA household energy data, South Dakota fuel prices and NOAA climate normals. Your home will differ.

Repair makes sense when a part like a capacitor or contactor has failed.

Replacement makes sense when the compressor has failed or the system uses R-22 refrigerant, which is no longer made.

In South Dakota, HVAC licensing for homes is left to the cities and towns.

South Dakota does not license HVAC contractors at the state level. That rule is left to individual cities and towns, so whether a contractor needs a local license, and what that license required them to show, depends on which town in Clay County the house is in. There is no state board keeping a record of who is qualified, so any protection here starts at the city or town office, not with the state.

What does apply everywhere, including here, is federal law. Repairing an air conditioner almost always means opening the refrigerant side of the system, and any technician who does that has to hold EPA Section 608 certification. That is not a license and it does not cover workmanship or business practices, but it is the one credential that holds no matter where in Clay County the house sits.

Source: South Dakota Legislature

Why is my AC not blowing cold air?
The most common cause is low refrigerant from a leak somewhere in the line. It can also mean the compressor has failed, or airflow is choked off by a dirty filter or frozen coil. Only a technician with EPA Section 608 certification can legally open the refrigerant side to check the charge and find a leak, so that part of the diagnosis has to be done in person.
Why is my AC leaking water?
Warm air moving over the indoor coil creates condensation, and that water is supposed to drain out through a condensate line. If the line is clogged or disconnected, the water backs up and finds another way out, often into the house. A frozen coil that then thaws will do the same thing, so the leak can point to an airflow problem instead of just a drain problem.
Why won't my AC turn on?
Start with the thermostat. Check that it has power, the setting is actually below room temperature, and the batteries aren't dead. If the thermostat looks fine, the problem is likely a tripped breaker or a safety switch that shut the system down, and a contractor can trace it from there.