HVAC Contractor License Missouri Guide

To get a HVAC contractor license in Missouri, start by choosing your job location and meet that city/county’s mechanical licensing rules—there’s no statewide HVAC license. In Kansas City, for example, you must employ a Mechanical Supervisor with a Certificate of Qualification, then obtain the contractor license and required insurance.

Requirements last verified: 2026-10-16

Requirement	Details
Licensing agency	No state HVAC license. Licensing is local. Examples: Kansas City, MO City Planning & Development – Contractor Licensing (official page; see IB118); City of St. Louis Building Division/Mechanical Board (permits; mechanical code); St. Louis County Board of Examiners for Mechanical Licensing (board portal).
Fees (examples)	Kansas City contractor license: $55 nonrefundable application fee + $167 issuance; $167 quadrennial renewal (IB118). Kansas City Certificate of Qualification (Mechanical Supervisor): $181 quadrennial renewal (Ord. File 220612). City of St. Louis mechanical permit application fee: $25 per permit (fee schedule).
Experience/qualification	Kansas City license requires a designated Mechanical Supervisor holding a Certificate of Qualification; the supervisor must meet experience and reference-letter criteria and pass a city-accepted exam (ICC/Prometric) (KCMO; IB118).
Exam	For Kansas City Mechanical Supervisor: pass an approved trade exam (ICC/Prometric) before certification (IB Index; IB118).
Minimum age	Not set by Missouri statewide. Check your local licensing code (e.g., Kansas City Building & Rehabilitation Code) (code portal).
Insurance/bond	Kansas City requires a Certificate of Liability naming the City as additional insured per IB135; maintain workers’ compensation if you have 1+ employees in construction (state law) (IB135; MO DOL WC rule).
Renewal cycle	Kansas City contractor license renews every 4 years ($167) and Mechanical Supervisor certificate renews every 4 years ($181) (IB118; Ord. File 220612).
Business registration	Form your entity with the Missouri Secretary of State (e.g., LLC: $50 online vs. $105 paper) and obtain any city business license before applying locally (SOS fees; KCMO Business License).
Refrigerant credential	EPA Section 608 certification is required for anyone who maintains, services, repairs, or disposes of equipment that could release regulated refrigerants (federal requirement) (EPA Section 608).

How to get a HVAC contractor license in Missouri

1. Pick your work jurisdiction. Missouri has no statewide HVAC license; confirm the rules where you’ll work (e.g., Kansas City, St. Louis City/County). Start with the city/county licensing page and code. (KCMO; St. Louis Code.)
2. Form your business and register for taxes. File your Missouri entity (LLC filing is $50 online) and secure the city business license before the contractor application. (MO SOS fees; KCMO Business License.)
3. Obtain EPA Section 608. If you or staff handle refrigerants, technicians must hold EPA 608 certification. (EPA 608.)
4. Qualify your supervising individual. In Kansas City, your company must employ a Mechanical Supervisor who earns a Certificate of Qualification by meeting experience/reference requirements and passing an approved exam (ICC/Prometric). (IB118; KCMO ordinance.)
5. Apply for the local HVAC/mechanical contractor license. Example—Kansas City: submit the contractor application ($55) and, upon approval, pay the $167 issuance fee via CompassKC; renew quadrennially. (IB118.)
6. Provide insurance and (when applicable) workers’ comp. File a liability certificate naming the City as additional insured per IB135 and carry workers’ comp if you have 1+ construction employees (state law). (IB135; MO DOL.)
7. Pull permits and pass inspections. Only licensed contractors can pull mechanical permits; follow local permitting rules and close with required inspections. (KCMO permits; St. Louis permits.)

Missouri HVAC contractor license: statewide vs. local

Missouri does not issue a statewide HVAC/mechanical contractor or technician license. Each city/county sets its own credentialing (e.g., Kansas City requires both a contractor license and a supervising individual’s Certificate of Qualification). Review the code or information bulletins where you’ll work. (KCMO IB118; KCMO Code portal; St. Louis Mechanical Code.)

Costs to get licensed as a HVAC contractor in Missouri

Budget both business-formation and local-licensing costs. For example, Missouri LLC formation is $50 online (SOS). In Kansas City, expect a $55 application and $167 issuance for the contractor license, plus the supervisor exam/certification and a quadrennial renewal ($167 for the business; $181 for the supervisor). (IB118; Ord. File 220612.) For a deeper cost breakdown, see our analysis of Missouri HVAC contractor licensing costs.

Insurance, bond, and workers’ compensation

Kansas City requires contractors to provide a certificate of liability insurance that names the City as additional insured per Information Bulletin 135; you must also comply with Missouri’s workers’ compensation rule (coverage required for construction employers with one or more employees). (IB135; MO DOL.)

EPA 608 and Missouri HVAC licensing

EPA Section 608 certification is a federal requirement for anyone servicing or disposing of equipment that could release regulated refrigerants. It is separate from local licensing and does not replace a city/county HVAC/mechanical contractor license. (EPA Section 608.)

Local examples: what Kansas City and St. Louis require

Kansas City (KCMO)

Process: obtain a city business license, qualify a Mechanical Supervisor (exam + references), then apply for the contractor license through CompassKC. Fees: $55 application + $167 issuance; renew contractor license every 4 years ($167) and the supervisor’s certificate every 4 years ($181). Insurance per IB135 is required. (Business license; IB118; Ord. File 220612; IB135.)

City of St. Louis and St. Louis County

Both jurisdictions regulate mechanical/HVAC work locally. The City issues mechanical permits to licensed mechanical contractors; permit application fees start at $25. St. Louis County’s Board of Examiners oversees mechanical licensing and regularly approves HVAC contractor licenses. Review each jurisdiction’s code and board materials before applying. (City fee schedule; City Mechanical Board; County board portal; County meeting minutes.)

Many Missouri professions are similarly split between state and local control. If you’re researching other credentials, our guides to the Private Investigator Missouri License process and the Missouri Private Security License steps show how requirements can vary by agency and jurisdiction.

Frequently Asked Questions

Does Missouri have a statewide HVAC contractor license?

No. HVAC/mechanical licensing is handled by local jurisdictions (e.g., Kansas City, St. Louis). You must be licensed where the work is performed. Check the local code/board page before bidding work. (KCMO; St. Louis code.)

What are the exact fees in Kansas City?

$55 nonrefundable application + $167 issuance for the contractor license, with a $167 quadrennial renewal. The supervising individual’s Certificate of Qualification renews every four years for $181. (IB118; Ord. File 220612.)

Do I need insurance or workers’ comp?

Yes. Kansas City requires liability insurance naming the City as additional insured (IB135). Missouri requires workers’ compensation coverage for construction-industry employers with one or more employees. (IB135; MO DOL.)

Is EPA Section 608 required to get licensed?

EPA 608 is federally required for anyone who handles regulated refrigerants. It’s separate from (and in addition to) your local HVAC/mechanical contractor license. (EPA 608.)

What if I work across multiple Missouri cities?

You must meet each jurisdiction’s licensing/permit rules where work occurs. Many contractors maintain a primary license (e.g., Kansas City) and verify reciprocity or local requirements before taking jobs elsewhere. (IB118; St. Louis code.)

Ready to move from research to action? License Navigator can map your exact Missouri city/county path, estimate costs and timelines, and prep your applications so you can land HVAC work faster.