HVAC Permits & Licenses in Watertown, SD

Includes minimum wage, workers’ compensation, and unemployment insurance notices.

Post in a conspicuous place where employees can read them.

Required for all LLCs. Annual report required separately (see below).

Applies to all LLCs. Filed online via sdsos.gov.

Required for all HVAC contractors installing, altering, or repairing heating, ventilation, air conditioning, or refrigeration systems. Must designate a responsible managing employee/officer with valid journeyman certificate.

Prerequisites: 4 years experience OR 3 years experience + 1 year apprenticeship + 576 hours schooling, plus exam. Required for the managing individual of HVAC contractor business.

Not required if using exact LLC name on all documents. Expires after 5 years unless renewed.

Most HVAC businesses sell parts/supplies. Register online at tap.dor.sd.gov.

Required for all businesses; HVAC contractors must also hold state license. See Sioux Falls Municipal Code Chapter 9.20.

No general county business license; zoning approval required instead. Confirmed via county auditor FAQ.

Required by some private clients and insurance carriers when the contractor offers design/build services.

Minimum liability limits in SD are $25,000 per person, $50,000 per accident for bodily injury, and $25,000 for property damage.

Many manufacturers require contractors to carry product liability coverage as a condition of the dealer agreement.

Included for completeness; HVAC contractors do not engage in liquor sales.

EIN is required for all LLCs that have employees, elect to be taxed as a corporation, or need to open a business bank account.

File Form 1065 (U.S. Return of Partnership Income) and issue Schedule K‑1 to members.

File Form 1120 (C‑corp) or Form 1120S (S‑corp) accordingly.

Must follow construction‑specific safety standards (e.g., fall protection, electrical safety, confined spaces).

HVAC contractors with ≥10 employees must maintain OSHA 300, 300A, and 301 logs.

Submit site plan for review. Home-based HVAC may require conditional use permit. Sioux Falls Revised Ordinances Chapter 11.

Strict limits on storage of equipment/vehicles. Municode-hosted Sioux Falls Code Sec. 11.05.0503.

Mechanical permits specifically required for HVAC system installations in customer buildings (separate from business setup).

Comply with zoning sign regulations (max size by district). See Code Chapter 11.06.

HVAC shops with refrigerants may trigger hazardous materials review. Fire Code adoption via IFC 2021.

Requires zoning, building, fire, and health approvals.

No requirements found for HVAC businesses in Sioux Falls/Minnehaha County.

No permit required, but violations enforceable 7am-10pm.

Sole proprietors with no employees are exempt. Coverage can be obtained through private carriers or the State Fund (South Dakota Workers' Compensation Fund).

South Dakota requires a $10,000 surety bond for all HVAC contractor license applicants (per SD Codified Laws § 36‑31‑1). The bond protects the state and consumers against violations of licensing rules.

While South Dakota does not mandate CGL insurance, many cities (e.g., Sioux Falls) require proof of $100,000 per occurrence/$300,000 aggregate coverage for building permits.

Schedule inspections through the local building department.

Fire department may require a fire extinguisher inspection and clearance certificate.

All dates are calendar‑based; deadlines that fall on weekends are extended to the next business day.

Must ensure that services, facilities, and communications are accessible to individuals with disabilities.

Four types of certification (Type I, II, III, Universal). Required for technicians and for the business to purchase refrigerants.

Reporting is required under EPA’s Section 608 for large‑volume users.

Claims about energy efficiency, cost savings, or certifications must be substantiated.

Must pay at least the federal minimum wage, overtime for >40 hrs/week, and maintain accurate payroll records.

Employers must complete Form I‑9 for each new hire and retain for the required period.

If only using a personal vehicle for occasional deliveries under 10,000 lb, registration is not required.

Requires proper packaging, labeling, and placarding in addition to FMCSA registration.

Voluntary program; useful for marketing and may affect consumer protection compliance.

File online via the Secretary of State portal. No separate state tax filing is required for the report.

Renewal must be submitted online; proof of liability insurance must be current.

At least 12 CE hours in HVAC/Mechanical systems are required per renewal cycle.

File electronically via the South Dakota Taxpayer Access Point (TAP).

Report on the same TAP system as sales tax.

Must be filed electronically or by mail using Form 941.

Each member must receive a Schedule K‑1.

Report via the SD UI online portal.

Submit payroll totals and pay any outstanding premiums.

Include tax returns, payroll records, expense receipts, and supporting documents.

Include sales invoices, exemption certificates, and filing confirmations.