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As the United States (U.S.) States pioneer regulations for trace chemicals, manufacturers, specifying engineers, and contractors must adapt to a new era.

What if your boiler system could automatically switch between heat sources based on energy cost? A closer look at staging logic, relays and smarter system control.

Codes are expanding into areas like resilience, electrification, water quality management and long-term accountability. No longer are they static rulebooks; they’re living frameworks shaping how systems perform over decades.

When comparing hydronic systems designs that are common in North America with typical European equivalents, comparisons reveal details that would be beneficial in either market, but are not “traditional” in one market or the other.

P&M highlights ten trailblazers in the industry for Women's History Month.

Erica Barnes is one of Plumbing & Mechanical’s 10 influential women of 2026 who are leading the plumbing industry to great success.

Courtney Borja is one of Plumbing & Mechanical’s 10 influential women of 2026 who are leading the plumbing industry to great success.

Crystal Carter is one of Plumbing & Mechanical’s 10 influential women of 2026 who are leading the plumbing industry to great success.

Khadija Head is one of Plumbing & Mechanical’s 10 influential women of 2026 who are leading the plumbing industry to great success.