Our own crew. No subcontractors.

What self-performed means in plain terms

When Davinci Mechanical prices a mechanical, refrigeration or controls scope, the people who do that work are our own. They are UA Local 250 journeymen and apprentices on our payroll, supervised by our own foremen, working out of our own trucks. We do not hand the pipefitting, the brazing, the refrigeration circuits, the rooftop unit set, the startup or the controls programming to another company and add a markup for managing them. There is no subcontractor tier on the mechanical side of the job.

That sounds like a small distinction until you have lived through the alternative. On a subcontracted job, the name on your proposal is one company, the name on the work order is another, and the name on the warranty claim six months later may be a third. Questions travel through two or three people before they reach someone holding a wrench. Self-performance removes those hand-offs. The company that quoted the work is the company that does it, and the people who walked the roof during the survey are the people who are back on that roof for the install.

Why it matters when you are the owner or the bid evaluator

If you are reading proposals side by side, the self-performance question deserves real weight, because it changes how the project behaves after award. The effects show up in six places.

• Accountability. When a joint leaks or a unit short-cycles, there is one company to call and no room for a finger-pointing exercise between a prime and a trade. The people who made the connection are the people who come back to correct it.
• Schedule control. Our foreman decides when the crew moves, not a subcontractor juggling three other customers. If a restaurant needs the walk-in work finished before a weekend service, or a school needs the roof work done inside a summer window, the resources are ours to point at it.
• Quality. Brazing practices, nitrogen purging, evacuation, line set support and controls wiring are done to one standard because one training program produced the people doing them. You are not inheriting whatever the lowest bidder's helper learned last year.
• Safety. One site safety culture, one set of lockout and rigging practices, one crew that knows the access rules for your building. Fewer unfamiliar companies on a roof or in an occupied space means fewer surprises for your tenants and your insurance carrier.
• Warranty and one phone call. Workmanship questions go to the same office that wrote the proposal. Equipment warranty paperwork, startup records and the installer information a manufacturer asks for all trace back to us.
• Communication. Your property manager, GC or facilities lead deals with the foreman and the project contact, not a relay chain. Changes in the field are discussed with the people who will actually carry them out, which keeps small issues from becoming change orders. Our guide to what triggers HVAC change orders explains why that matters financially.

How a project runs with one crew from survey to startup

The easiest way to see the difference is to follow a typical equipment project from first visit to handoff. This sequence applies whether the job is a rooftop unit replacement, a walk-in installation or a controls upgrade, with details that vary by scope.

1. Survey. A senior technician or project lead visits the site, reads the nameplates, checks curbs, piping routes, electrical disconnects and roof or yard access, and photographs what is there. This is the same person or crew that will do the work, so the notes are written by someone who will have to live with them.
2. Scope and proposal. The proposal names what our crew performs, what is rented, and what other parties must handle. The scope exclusions checklist is the model for how we think about that line.
3. Submittals and ordering. Equipment data, curb adapters and long-lead items are confirmed against the survey. Because the person who surveyed also reviews the submittal, mismatches in dimensions, voltage or refrigerant type get caught before the truck rolls.
4. Mobilization. Our foreman schedules the crew, coordinates access with your site contact and arranges any rented lift or crane. See the equipment removal, crane and rigging scope for how we describe that coordination.
5. Installation. Disconnects, removal, setting, piping, brazing, refrigerant circuit work, condensate, controls wiring and low-voltage connections are all performed by the same crew, with the lead checking each stage before the next one covers it up.
6. Startup and verification. Our technicians start the equipment, record pressures, temperatures, amperage and airflow readings, and confirm the controls sequence does what the specification says. Those readings go into the asset record in the DaVinci Portal.
7. Closeout. Documentation, photos, model and serial numbers and recommendations are delivered, and the same crew is available for the first-season follow-up.

What we coordinate but do not perform, and how a scope should assign it

Saying everything is self-performed would be easy and untrue. Real mechanical projects touch other trades, and the most common cause of ugly surprises is a scope that never says who owns them. Here is where our line sits.

Rented equipment we coordinate

A crane truck or lift used to set rooftop equipment is rented and directed by us. The operator is part of that rental, the pick plan is ours, and our crew does the rigging and setting. It is not a mechanical trade we hand off, and we do not treat it as one. Whether the rental is included in a given proposal is stated in that proposal, and the crane and rigging scope explains what to look for.

Work we do not perform

The honest framing for an owner is this: we will tell you what we need from these trades and when, we will coordinate our work around theirs, and we will flag a gap when we see one. But the scope itself must name the licensed party that performs each item, and the owner or GC should confirm that party before award. Our guide on how to write a commercial HVAC scope of work shows the structure, and the comparison page on self-performed versus subcontracted HVAC work goes into the trade-offs from a neutral angle.

How the union workforce, certified payroll and prevailing wage fit

Self-performance and the union model support each other. Our field people are UA Local 250 members, which means they come through a formal apprenticeship and continuing training structure rather than ad hoc hiring. When a specification calls for prevailing wage, apprenticeship ratios or a project labor agreement, our own crew is already the workforce those documents assume.

That has a direct compliance benefit. Certified payroll on a public job is only as clean as the company that controls the labor. When mechanical work is subcontracted, the prime inherits payroll reporting from every tier below it, and errors at the bottom become the owner's audit finding. With one crew on our own payroll, we prepare certified payroll for the people we directly employ and for the work we directly perform. We are PLA and prevailing-wage ready, and DIR registration, determinations and reporting practice are part of normal operations rather than a special request.

• Public agencies and schools can review one payroll record set for the mechanical work instead of a stack from several tiers.

Questions to ask any bidder about who performs the work

Use these with us or with anyone else on your bid list. The point is not to catch a contractor out. It is to get the answer in writing before the contract, when a vague reply is cheap to fix.

How self-performance shows up in maintenance programs and the portal

The project benefits carry over to ongoing service. In a maintenance contract, the technician who surveys your equipment at the start of the program is the person who builds the asset list, tags the units and writes the first condition notes. Quarterly visits are performed by our own crew, not a rotating cast from a referral network, so the person standing at your rooftop unit in the fall has seen it before.

That continuity is what makes the DaVinci Portal useful. Every unit carries a QR-coded record of service history, readings and photos, and every entry in that record was made by someone from our company. When a reading looks off, the question "who wrote this?" has a direct answer, and a follow-up question can be asked of the person who took the measurement. The maintenance reporting and documentation guide describes what a trustworthy record should contain.

Restaurant operators see the same benefit under pressure. When a walk-in drifts warm on a Friday, the person who answers has typically already looked at that box, and the restaurant refrigeration emergency playbook assumes exactly that kind of familiarity. For office owners considering a system change, the office conversion pages show how the same crew handles refrigerant piping and equipment, while the electrical, structural and piping guide for conversions is explicit about the parts that belong to other trades.

How to start

If you are evaluating us, begin with the scope. Send drawings, a specification or even a rough description and ask us to mark each line as ours, rented, or someone else's. That single exercise tells you more about how a contractor works than a capabilities brochure.

• Project or solicitation: use the bid projects page to send documents, or browse bid work for the agencies and sectors we pursue.
• Recurring service: review the plans and maintenance contract information, then request a site survey.
• A proposal you want tested: the scopes library and the second opinion diagnostic help you check someone else's number against the real conditions.
• Something down now: call (714) 594-9194, Orange County sites first.