How Much Does HVAC Installation Cost in South Dakota in 2026

· ✓ Last verified Oct 12, 2026 · October 17, 2025 · by AskDoss Editorial Team ·Home Services · 4 min read

The benchmark is national: $19,484 for the HVAC Conversion | Electrification project in the Remodeling 2025 Cost vs. Value Report (www.costvsvalue.com). South Dakota HVAC mechanics had a $29.51 median hourly wage in May 2025, just above the U.S. $29.33 (BLS). Replacing a furnace motor falls under the state’s 2% contractor’s excise tax; a cleaning visit is sales-taxable instead.

One sourced project price and the installer wage behind it

The Cost vs. Value Report puts the 2025 national job cost of its defined electrification conversion at $19,484, with a $14,053 resale value, a 72% recoup. That is an average over the report’s 119 U.S. markets. It is not a furnace-plus-AC quote for Pierre or Aberdeen, and the equipment the project swaps out is defined in the report, not here. No regional version of that number is used for South Dakota.

For wages, the Bureau of Labor Statistics survey for May 2025 found 1,610 heating, air conditioning and refrigeration mechanics and installers employed in South Dakota. It counts wage and salary workers in all industries and leaves out the self-employed. The state’s median, $29.51 an hour ($61,390 a year), sat slightly above the national $29.33 ($61,010). The average ran the other way: $29.37 an hour ($61,100) in South Dakota against $31.14 ($64,780) for the country. Pay is part of what a crew charges, but a wage is not a job price.

Tune-up or replacement: which South Dakota tax applies

The Department of Revenue’s July 2026 Contractor’s Excise Tax Guide draws the line with a furnace. Its two examples: “Cleaning a furnace and replacing a filter are subject to sales tax,” while “Replacing the furnace motor is subject to contractor’s excise tax.” That excise tax is two percent of a prime contractor’s gross receipts from realty improvement contracts (SDCL 10-46A-1). Because those receipts include the tax collected from you, the guide lets contractors use 2.041% when writing up a bid or bill. A unit you buy online and hand to the installer does not escape it: § 10-46A-3 counts materials bought by whoever let the contract.

The state licenses that reach a furnace or AC job

Electrical hookup. SDCL 36-16-14 bars anyone but an electrical contractor from contracting for “the installation of electrical wiring or the installation of electrical parts of other apparatus.” A Class B electrician may also contract, limited to farm and residential wiring and the “electrical equipment, appliances and apparatus” tied to it. No license is needed to wire your own residence (defined as “a detached owner-occupied single-family dwelling”), your own farmstead, a single-family home being built on premises you own and intend to occupy as your residence, or private non-habitable property you own that is not substantially used in connection with a trade or business, though entrance installations of more than 60 amperes capacity, circuits and the installation of electrical parts of other apparatus remain subject to inspection and an inspection fee (§ 36-16-15); other exemptions are in § 36-16-16. If the bid includes a new circuit or disconnect for the condenser, ask which license covers that line item. The State Electrical Commission inspects wiring under the 2023 National Electrical Code for permits received on or after Nov. 12, 2024.

Water and waste connections. The State Plumbing Commission licenses thirteen trades under SDCL 36-25-19, from appliance contractor to water conditioning installer. The appliance license covers, in the words of rule 20:53:01:01, “the making of local connections to water and waste systems of all miscellaneous and commercial equipment designed to use electricity or gas or both as a basic source of energy,” plus its maintenance and service, but not plumbing fixtures for sanitary use or water conditioning. None of the thirteen categories in § 36-25-19 is named for heating or air conditioning. Appliance licensees are on the commission’s specialty licensee list.

Federal changes a 2026 installation runs into

Two credits ended under Pub. L. 119–21, signed July 4, 2025. Section 25C(i), the credit that covered qualifying heat pumps, central air conditioners and furnaces, now reads: “This section shall not apply with respect to any property placed in service after December 31, 2025.” For geothermal heat pumps and other clean-energy property under § 25D, the cutoff is written differently: the credit “shall not apply with respect to any expenditures made after December 31, 2025.”

South Dakota is outside the Southeast and Southwest lists in 10 CFR 430.32(c)(6), so the higher regional AC floors there do not apply. The national rule in § 430.32(c)(5) sets 13.4 SEER2 for split-system air conditioners manufactured on or after January 1, 2023, at any capacity, and 14.3 SEER2 with 7.5 HSPF2 for split-system heat pumps.

South Dakota HVAC questions

Will a heat pump installed in 2026 still earn the federal credit?

No. Section 25C stops for property placed in service after December 31, 2025.

Why does the installer’s bid show 2.041% tax instead of 2%?

The contractor owes 2% on receipts that already include the tax, and the Revenue Department’s guide allows 2.041% on the bid so the full 2% is collected. SDCL 10-46A-12 lets it appear as its own line on the bill.

Is 14 SEER2 the minimum for a new central air unit here?

No, 13.4 SEER2 is the federal minimum for split-system air conditioners made since January 1, 2023; the higher regional levels (14.3 SEER2 below 45,000 Btu/hr, 13.8 at or above it) apply only in the Southeast and Southwest, which exclude South Dakota.

© 2025 Zonda Media, a Delaware Corporation. Complete data from the Remodeling 2025 Cost vs. Value Report can be downloaded free at www.costvsvalue.com.

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