"Domestic / Commercial Gasfitter" means a person who may install, test, maintain, manufacture, assemble, construct, operate, alter and repairs propane / natural gas regulated products, such as: supply lines, appliances, equipment and accessories for use in residential and commercial premises. Limitations are dependent upon classification level.

Gasfitters employed by utility companies may install, repair/service distribution systems, meter sets and fittings from a city gate or bulk storage facility to the outlet of an individual user's meter set.  Those employed by propane distributors may install/service propane vaporizers, tanks/cylinder systems, liquid/vapour piping supply systems, temporary heating equipment, propane metering/dispensing equipment, and propane pumping equipment.

Gasfitters employed by mechanical and service companies may install and maintain piping and appliances in residential, commercial and industrial buildings.