Non-Union Mechanical Staffing · All Trades · Nationwide
Mechanical Staffing Agency — Non-Union HVAC, Plumbing, Pipefitting & Sheet Metal Workers
DiWo is a nationwide non-union mechanical staffing agency. We place all five major mechanical trades — HVAC, plumbing, pipefitters, sheet metal, and insulators — for commercial projects across the U.S.
What Is DiWo — A Non-Union Mechanical Staffing Agency
DiWo is a nationwide non-union mechanical staffing agency. We specialize in placing all five major mechanical trades — commercial HVAC installers, commercial plumbers, sheet metal mechanics, pipefitters, and mechanical insulators — for mechanical contractors across the United States.
Unlike general staffing agencies that place any trade or job type, DiWo is mechanical-only. That focus means we understand the trade, the pace of commercial mechanical work, and the type of worker who performs well on a fast-moving commercial job site.
Our billing model is simple: a flat hourly rate with no overtime premium after 40 hours, no placement fees, and all workers covered under DiWo's workers' compensation and liability insurance.
Mechanical Trades DiWo Staffs
- ◆Commercial HVAC installers — ductwork, AHUs, RTUs, VAV, splits
- ◆Commercial plumbers — DWV rough-in, water distribution, finish trim
- ◆Pipefitters — hydronic piping, steam, process, refrigerant
- ◆Sheet metal mechanics — spiral and rectangular duct, fabrication
- ◆Mechanical insulators — pipe insulation, ductwork, equipment jacketing
Who Uses DiWo for Mechanical Staffing
DiWo's clients are mechanical contractors — companies that hold the mechanical subcontract on commercial construction projects and need labor to execute it. They range from regional mechanical firms with 30 employees to large national mechanical contractors managing multiple simultaneous projects across several states.
Common use cases include: surge capacity when a project ramps faster than expected, filling gaps left by union hall dispatch delays, covering projects in states where the contractor doesn't have a local workforce, and providing coverage during a hiring gap on a key trade.
DiWo is not a fit for residential contractors, service and repair firms, or contractors looking to replace their entire workforce. We are a commercial project labor solution.
The DiWo Model vs. Traditional Staffing Agencies
Most general staffing agencies charge a bill rate that includes a significant markup over the worker's pay rate, plus overtime premiums after 40 hours, plus placement fees if you decide to hire the worker directly. The math adds up fast on a long-duration mechanical project.
DiWo's flat rate model eliminates the overtime markup. You pay the same hourly rate whether a worker logs 40 hours or 60 hours that week. On projects where crews routinely work extended schedules, this can represent tens of thousands of dollars in savings over a project duration.
Insurance, Compliance, and Payroll
DiWo manages workers' compensation, general liability, payroll, and compliance for all placed workers. Contractors are not responsible for coverage on DiWo-supplied workers. This simplifies your insurance burden and removes the compliance risk of misclassified workers.
Frequently Asked Questions
What is a mechanical staffing agency?
A mechanical staffing agency supplies skilled tradespeople — HVAC, plumbing, sheet metal, pipefitting, and insulation workers — to mechanical contractors on a temporary or project basis. DiWo specializes exclusively in non-union mechanical staffing nationwide.
What trades does DiWo staff?
DiWo staffs commercial HVAC installers, commercial plumbers, sheet metal mechanics, pipefitters, and mechanical insulators across the United States.
Does DiWo charge overtime for mechanical workers after 40 hours?
No. DiWo bills all trades at a flat hourly rate with no overtime markup after 40 hours.
Is DiWo only for large mechanical contractors?
No. DiWo works with mechanical contractors of all sizes — from regional firms with a few dozen employees to large national mechanical contractors managing projects in multiple states simultaneously.
What states does DiWo operate in?
DiWo operates nationwide across all 50 states. Our travel-ready workforce can be deployed to any commercial project location in the U.S.
Ready to Hire?
Tell us your trade, location, and start date. We assess fit within one business day.
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