IPA: /ˈstiːmˌfɪtə/
KK: /ˈstimˌfɪtər/
A person who installs and fixes systems that provide heat, ventilation, or refrigeration, often working with pipes and machinery.
The steamfitter worked all day to install the new heating system in the building.
Steamfitter → It is formed from "steam" (from Old English *steam*, meaning vapor or gas) and "fitter" (from Old French *fitier*, meaning to fit or adjust). A steamfitter is someone who fits or installs systems that use steam.
Think of 'steam' as vapor and 'fitter' as someone who adjusts or installs — a steamfitter is a person who installs systems that use steam.