Heating and cooling technicians may be represented by unions such as the United Association of Journeymen, and Apprentices of the Plumbing and Pipe Fitting Industry of the United States and Canada. Industry associations that provide educational programs, workshops, conferences, publications, and, in many cases, certification programs, include the Air-Conditioning, Heating, and Refrigeration Institute; Air Conditioning Contractors of America; the American Society of Heating, Refrigerating and Air-Conditioning Engineers Inc., Green Mechanical Council; HVAC Excellence; North American Technician Excellence Inc.; Partnership for Air-Conditioning, Heating, Refrigeration Accreditation; Plumbing-Heating-Cooling Contractors Association; Refrigerating Engineers & Technicians Association; and the Sheet Metal and Air Conditioning Contractors' National Association.
- Air Quality Engineers
- Airport Service Workers
- Architects
- Asbestos Abatement Technicians
- Assessors and Appraisers
- Boilermakers and Mechanics
- Bricklayers and Stonemasons
- Building Automation Systems Engineers
- Building Automation Systems Technicians
- Building Performance Diagnosticians
- Business Managers
- Carpenters
- Cement Masons
- Chimney Sweeps
- Civil Engineering Technicians
- Civil Engineers
- Computer-Aided Design Drafters and Technicians
- Construction Inspectors
- Construction Laborers
- Construction Managers
- Cost Estimators
- Drafters
- Drywall Installers and Finishers
- Electricians
- Elevator Installers and Repairers
- Engineering Technicians
- Engineers
- Floor Covering Installers
- General Maintenance Mechanics
- Geodetic Surveyors
- Geologists
- Geotechnical Engineers
- Glaziers
- Green Builders
- Grounds Managers
- Indoor Environmental Health Specialists
- Insulators/Insulation Workers
- Janitors and Cleaners
- Landscape Architects
- Landscapers
- Lathers
- Locksmiths
- Marble Setters, Tile Setters, and Terrazzo Workers
- Millwrights
- National Park Service Employees
- Occupational Safety and Health Workers
- Operating Engineers
- Painters and Paperhangers
- Parking Attendants
- Plasterers
- Plumbers and Pipefitters
- Property and Real Estate Managers
- Real Estate Developers
- Renewable Energy Site Assessors
- Resort Workers
- Restaurant and Food Service Managers
- Roofers
- Security Consultants
- Security Guards
- Sheet Metal Workers
- Smart Building Systems Designers
- Sports Facility Managers
- Stationary Engineers
- Surveying and Mapping Technicians
- Surveyors
- Swimming Pool Designers
- Welders and Welding Technicians