Missouri HVAC & Appliance Repair Insurance Requirements (2026)
HVAC Contractors
Missouri has no statewide HVAC or mechanical contractor license. Licensing is set locally by cities and counties (e.g., St. Louis city/county, Kansas City, Springfield, Columbia, St. Charles County), each with its own rules. Bills to create a 'Missouri Statewide Mechanical Contractors Licensing Act' have been introduced in nearly every legislative session since 2018 (most recently SB 957 in the 2026 session, still in committee as of this writing) but none has been enacted. The Missouri Division of Professional Registration's list of state licensing boards contains no HVAC, mechanical, or refrigeration board -- the only construction-adjacent statewide board is for electrical contractors.
Appliance Repair
No state license or insurance requirement for appliance repair in Missouri. The Division of Professional Registration's board list has no appliance-repair-related board. Manufacturers' warranty networks, home warranty companies, and commercial landlords typically require proof of general liability insurance (COI). Technicians servicing refrigerant-containing appliances must hold federal EPA Section 608 certification -- a federal, not state, requirement.
Workers' Compensation Threshold
Missouri employers generally must carry workers' compensation insurance once they have 5 or more employees, but construction industry employers -- including HVAC and appliance-repair businesses that erect, alter, demolish, or repair improvements -- must carry it with just 1 or more employees; sole proprietors and partners are not automatically covered and must affirmatively elect coverage.
Frequently Asked Questions
Does Missouri require insurance for HVAC contractors?▾
Missouri has no statewide HVAC or mechanical contractor license. Licensing is set locally by cities and counties (e.g., St. Louis city/county, Kansas City, Springfield, Columbia, St. Charles County), each with its own rules. Bills to create a 'Missouri Statewide Mechanical Contractors Licensing Act' have been introduced in nearly every legislative session since 2018 (most recently SB 957 in the 2026 session, still in committee as of this writing) but none has been enacted. The Missouri Division of Professional Registration's list of state licensing boards contains no HVAC, mechanical, or refrigeration board -- the only construction-adjacent statewide board is for electrical contractors.
Do appliance repair businesses need a license or insurance in Missouri?▾
No state license or insurance requirement for appliance repair in Missouri. The Division of Professional Registration's board list has no appliance-repair-related board. Manufacturers' warranty networks, home warranty companies, and commercial landlords typically require proof of general liability insurance (COI). Technicians servicing refrigerant-containing appliances must hold federal EPA Section 608 certification -- a federal, not state, requirement.
When is workers' compensation insurance required in Missouri?▾
Missouri employers generally must carry workers' compensation insurance once they have 5 or more employees, but construction industry employers -- including HVAC and appliance-repair businesses that erect, alter, demolish, or repair improvements -- must carry it with just 1 or more employees; sole proprietors and partners are not automatically covered and must affirmatively elect coverage.
Sources
- Missouri Revisor of Statutes — RSMo Section 287.030 - Employer defined -- five or more employees, exception, construction industry, accessed 2026-07-15
- Missouri Department of Labor and Industrial Relations, Division of Workers' Compensation — Who is required to carry workers' compensation insurance coverage?, accessed 2026-07-15
Last verified 2026-07-15. Spot something inaccurate? Report an inaccuracy.