// Mechanical contractors · Project side
Closeout packages, built against the spec and tracked until the GC accepts.
Closeout documents for mechanical contractors, tested as a free AI proof of concept on two or three projects you already turned over. AI builds the closeout log from the spec, files 20 to 30 documents against it and marks what is missing, and your project manager checks the draft against the package the GC actually accepted.
- Past closeout items
- 20 to 30
- Test results certified
- None
- System access
- None
// The one job
The spec says what's owed. The log shows what's in.
Near the end of a job, your PM or project coordinator works through the closeout requirements: Division 01's closeout sections first, then every Division 22 and 23 section that asks for documents of its own. They chase O&M data, warranties, startup reports, the balancing report and record drawings, then assemble, submit and resubmit until the GC signs off.
In the proof of concept, AI reads the same spec sections and the documents your team collected, and drafts the closeout log: each required item, the section that asks for it, the document filed against it, the warranty start date where there is one, and what was still missing or sent back. Nothing goes to the GC. Your PM sets the draft log beside what was actually accepted.
and tracked
// Where it gets hard
Why a mechanical closeout package comes back
The list is spread across the spec. Division 01 sets the general rules, typically in 01 77 00 Closeout Procedures, 01 78 23 Operation and Maintenance Data, 01 78 36 Warranties, 01 78 39 Project Record Documents and 01 79 00 Demonstration and Training. Each mechanical section then adds its own: 23 05 93 for testing, adjusting and balancing, 23 05 53 for identification, which is where valve tags and the valve chart come from, and the equipment sections for startup and extended warranties. A log built from Division 01 alone misses every item only the mechanical sections ask for.
O&M manuals are judged on detail, not bulk. Owner specs commonly want data in spec-section order with a tabbed divider for each product or system; each product data sheet marked to show the model actually installed, with data that doesn't apply struck out; the controls contractor's sequence of operation and as-installed control diagrams; and a chart of valve tag numbers giving each valve's location and function, keyed to the flow diagrams. A catalog page left showing every model in the series is the kind an engineer sends back.
Two warranty clocks rarely start together. Owner specs often start every warranty at substantial completion or a defined acceptance date, and some want a statement of each warranty's intended start date before final copies go in. A manufacturer's own coverage can stop at the sooner of two dates: one large commercial warranty runs 12 months from initial startup or 18 months from shipment, and another counts from installation instead of startup. Equipment that ships early can use up its factory coverage before the owner's warranty begins, and a spec may ask for two or five years on a chiller's compressor or the whole package. The log puts the spec's date beside the manufacturer's terms, so the gap shows.
Test reports belong to the people who signed them. A certified balancing report carries the stamp and dated signature of the TAB firm's supervisor: an AABC Test and Balance Engineer, a NEBB TAB Certified Professional or a TABB Certified Supervisor, working to that body's own standard. The federal UFGS spec goes further and requires the TAB firm to be independent of anyone doing design, supplying equipment or building on the contract. Where seasonal testing is specified, the second-season report can come months after the first, so it stays open on the log. Duct leakage testing follows SMACNA's HVAC Air Duct Leakage Test Manual, and one owner's chiller spec wants the startup log signed by the manufacturer's service representative and the owner.
Attic stock and record drawings need proof too. Spare filters, belts and other maintenance materials go to the owner on a date set at the closeout meeting, and the log needs a record of the handover. Record drawings have to show actual equipment locations, duct sizes and routing, and concealed piping located from features you can see. What your PM will check first: items missing from the log, product data not marked to the installed model, warranty start dates that don't match the spec, reports unsigned or filed against the wrong system, and attic stock with no record of handover.
// What you send
What the test needs from your project team
Two or three turned-over projects
Projects your team already closed out, with the package as the GC accepted it, including one where items went back and forth.
The spec sections
Division 01's closeout sections and the Division 22 and 23 sections for those projects. The relevant sections are enough, not the whole project manual.
The documents and the comments
The O&M manuals, warranties, reports and record drawings your team submitted, with every rejection or comment the GC or engineer sent back.
NDA first, look-alikes if needed
Specs and record drawings can be confidential to the owner, so the NDA comes before any file moves. If a project can't leave the office, we build a look-alike with your PM.
// Before it starts
Settled before the first project moves
The owner names who judges the draft log and agrees what counts as a pass, in writing.
- Reviewer
- Named by the owner. Usually the PM or project coordinator who assembles closeout today.
- Success criteria
- Agreed in writing first, including which misses count most
- Test reports
- Filed and checked for signatures, never certified
- Price
- A range for the live job, up front
- NDA
- Signed before any spec or drawing is sent
// How it's judged
The draft log beside the package the GC accepted
| On the same closed projects | What your team turned over | The proof of concept |
|---|---|---|
| Closeout items found across Divisions 01, 22 and 23 | Measured on your projects | Measured on your projects |
| Each document filed against the right item | Measured on your projects | Measured on your projects |
| Product data marked to the installed model | Measured on your projects | Measured on your projects |
| Warranty start dates against the spec | Measured on your projects | Measured on your projects |
| TAB, startup and test reports present and signed | Measured on your projects | Measured on your projects |
| Items the GC sent back, caught before they went | Measured on your projects | Measured on your projects |
// After a yes
About 30 days on a project in closeout
After your PM's yes, the job runs for about 30 days on a live project heading into closeout, filing documents against its log as they arrive.
A person approves every transmittal before anything reaches the GC. The log shows what is missing and who owes it, and reminders to suppliers or subs are drafted for your PM to send.
The live job has a fixed price before you sign. Whatever comes next gets its own price, and monthly support starts once a job is live.
// After closeout
What could come next
- 01Next
Warranty tracking after turnover
Each unit's warranty dates kept in one list your service department checks before it bills a repair that may still be under warranty.
- 02Then
From turnover to a maintenance agreement
A closed project's equipment schedule drafted into the equipment list for a maintenance agreement proposal, for your service manager to price.
- 03After that
Commissioning issues log
Open items from the commissioning agent's log matched to whoever owes each fix and tracked until closed.
// Across industries
The same job in other industries
// One hard limit
It never certifies a test result.
Balancing, duct leakage, pressure, disinfection and startup results are measured and signed by the people certified or authorized to do it. The draft files those reports, checks they are present and signed, and marks what looks off for your PM. It never writes a reading, signs a report or changes one. Certified payroll stays out as well.
Priced per job. You get a range before the proof of concept and a fixed price before you sign.
The range comes on the call, once we know how many projects you close out in a year and how many mechanical sections a typical spec carries.
// Questions
Closeout questions from mechanical PMs
Does it certify or sign test and balance reports?
Our GC runs closeout in Procore. Does that matter?
Does it put the O&M manuals together?
Can it cover plumbing as well as HVAC?

Rob Eason, founder
// Book a proof-of-concept call
Bring two projects you already closed out.
30 minutes with Rob. You'll be asked for your company and role, the job to test, and about how many projects you turn over in a year. Hold specs and closeout files until the NDA is signed.
- Co-owned a 60-employee financial services firm and sold his share to his partner.
- Ran GOSO Technologies, a Boston solar company rated 5/5 across 24 Google reviews.
- 5/5 across 83 reviews in HighLevel's Certified Admin Directory.
- 4.3/5 from 6 Google reviews of Massmarket AI.
- Every directory and Google review, critical ones included, is shown word for word at massmarket.ai/reviews.
- Takes every proof-of-concept call himself.
