Steamfitter Salary Guide 2026

Key Takeaways

• Total compensation packages (wages + benefits) for union steamfitters range from $50-$105+/hour depending on local, with benefits often adding 40-60% on top of base wages
• The highest-paying markets are New York City, Boston, San Francisco, Chicago, and Seattle — all strong union markets with prevailing wage requirements on public projects
• Welding certifications (particularly ASME Section IX 6G on stainless steel and chrome-moly) create the most significant wage premiums among individual credentials
• Overtime is a major income variable — steamfitters on large commercial projects regularly work 50-60 hour weeks during peak construction phases, with time-and-a-half after 8 hours or 40 hours depending on the local agreement
• Non-union steamfitters earn 20-40% less in total compensation than their union counterparts in the same market, primarily due to the benefits gap (pension, annuity, health insurance)