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NAICS 238220 and PSC R499 contractors in Washington

Plumbing, Heating, and Air-Conditioning Contractors. SUPPORT- PROFESSIONAL: OTHER. Use this deeper state cross-code page to see which visible contractors sit in the overlap between these two lanes inside Washington.

Washington · NAICS 238220 · PSC R499

Last updated: April 3, 2026

Visible recipients

Mapped obligations

$4,055,716

Buyer overlap

Top recipients

Visible recipients in the Washington overlap of NAICS 238220 and PSC R499

Mckinstry Essention, LLC

Seattle, WA

Mckinstry Essention, LLC is a federal category business profile based in Seattle, WA. The current public data layer shows $900,972 in visible federal obligations across 5 awards or transactions. General Services Administration appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541330 (Engineering Services). The profile also shows meaningful product and service activity in PSC B540.

$4,055,716