Get licensed. Stay licensed.
Every code, certification, license, and insurance requirement that governs the trades — in one place. The same requirement can matter to you two ways: as a credential for your career, and as something your company needs to operate. Filter by your trade, your level, and which lens you're looking through.Licensing by trade + state · expanding
Certifications that move you up
The cards, certs, and licenses that get you hired and take you from apprentice to journeyman to master — EPA 608, OSHA 10/30, NABCEP, and the licensing your trade requires.
Show career credentials →What it takes to operate legally
The licensing, insurance, and compliance you need to stand up and run a shop — contractor and business licenses, general liability, workers' comp, bonding, and the codes you're inspected against.
Show company requirements →See what's relevant to you. Add your trade, level, and the certs you already hold to your Trade Card — we'll surface the credentials and training that matter for where you are and where you're headed.
Build your Trade Card →EPA Section 608
EPA 608Federal regulation requiring certification for technicians who handle refrigerants in HVAC systems.
LEED
LEEDThe most widely used green building rating system, certifying the design, construction, and operation of high-performance buildings.
ENERGY STAR
ENERGY STARGovernment-backed program certifying energy-efficient products, homes, and buildings.
RESNET HERS Index
HERSThe industry-standard score for residential energy efficiency, governed by RESNET.
BPI Certification
BPIProfessional certifications for home energy auditing and building-performance contracting.
ASHRAE Standards
ASHRAETechnical standards for HVAC&R design, energy efficiency, and indoor air quality, widely adopted by building codes.
International Residential Code
IRCThe International Residential Code (IRC) is a model code published by the International Code Council (ICC) that establishes minimum requirements for one- and two-family dwellings and townhouses up to three stories. It is a comprehensive, stand-alone code combining building, plumbing, mechanical, fuel gas, energy conservation, and electrical provisions for residential construction.
International Mechanical Code
IMCThe International Mechanical Code (IMC) is a model code published by the International Code Council that establishes minimum requirements for mechanical systems using prescriptive and performance-related provisions. It governs the design, installation, and safety of HVAC, ventilation, exhaust, and refrigeration systems in buildings.
OSHA 10/30-Hour
OSHA 10/30The OSHA Outreach Training Program offers voluntary 10-hour and 30-hour courses that teach workers to recognize, avoid, abate, and prevent common job-related safety and health hazards. The 10-hour course targets entry-level workers, while the 30-hour course is intended for supervisors and workers with some safety responsibility.
PHCC
PHCCThe Plumbing-Heating-Cooling Contractors—National Association (PHCC) is a U.S. trade association founded in 1883 that represents plumbing and HVACR contractors through advocacy, education, and training. It serves approximately 3,300 member businesses and 65,000 technicians via a network of affiliated state and local chapters.
ACCA
ACCAThe Air Conditioning Contractors of America (ACCA) is the national trade association representing HVACR contracting businesses and professionals across the United States. It develops ANSI-approved quality standards for the design, installation, maintenance, and verification of HVAC systems, including the widely used Manual J, Manual D, and Manual S.
MCAA
MCAAThe Mechanical Contractors Association of America (MCAA) is a national trade association representing more than 3,000 firms in the heating, air conditioning, refrigeration, plumbing, piping, mechanical systems, and HVACR service industries. It provides its member contractors with education, training, labor-management resources, and industry tools.
SMACNA
SMACNASMACNA is an international trade association representing sheet metal and HVAC duct contracting firms, best known for developing widely referenced technical standards such as the HVAC Duct Construction Standards. It provides its members with education, technical standards development, labor relations, and industry advocacy.