Equipment tags and counts
Compare tags and counts across the floor plans, the roof plan, and the schedules, so the indoor and outdoor units match before you order.
Check the mechanical set before you price it
The same equipment appears on the floor plans, the roof plan, the schedules, and the details. Groundbook AI reads the whole mechanical set and shows where counts and tags disagree, where ventilation or controls information is missing, and where a detail conflicts with the specification, so you can ask before the job starts.
Upload a set you have already reviewed and compare our findings with yours. Your first project is free.
Pay as you go. Project reviews start at $100.
Groundbook AI for mechanical contractors is an AI plan review that reads the complete mechanical set—floor plans, roof plan, enlarged plans, equipment schedules, details, and specifications—and surfaces where they disagree or leave something out, with the exact sheet and location. Mechanical and HVAC contractors, estimators, and project managers use it as a second check before they price the work, order equipment, or start the job.
Confirm the counts before you orderSee where equipment counts and tags differ between the floor plans, the roof plan, and the schedules.
Raise the RFI before the job startsFind missing ventilation, controls, and power information while there is still time to ask the engineer.
Price one specification, not twoFind details and schedules that call for something different from the specification.
What mechanical contractors check
Upload the mechanical drawings, schedules, details, and specifications. Add the architectural, structural, and electrical sheets to check your work against them.
Airflows on plans vs. schedule totals
Compare the supply, return, and exhaust airflows tagged on the plans with the scheduled airflow of the unit that serves them.
Outdoor air and exhaust
Check that every occupied room shows an outdoor air route and rate, and that exhaust is shown where the documents call for it.
Refrigerant piping and insulation
Compare pipe sizes, insulation thickness, and materials in the details with the specification.
Dampers, curbs, pads, power, and controls
Find where dampers, curbs, pads, power connections, and controls are shown, missing, or left "by others."
Notes and callouts
Find notes and callouts that point to a detail, sheet, or enlarged plan that is missing or is not the right one.
Code sections the drawings cite
Detect the codes the drawings cite and check the drawings against them. Each finding cites the code section it relies on.
From a real mechanical set
Six findings from one mechanical permit set for a multistory apartment building. Each one is a possible issue for the team to verify with the engineer.
Equipment counts did not add up
The roof plan showed one fewer condenser of one size, and one more of another, than the indoor units on the floor plans called for. The equipment order could not be confirmed until the unit assignments were resolved.
Common rooms showed no outdoor air
Ground-floor common rooms were served by ducted heat pumps with supply and return connections only. No outdoor air route or rate appeared in the set, which the mechanical code requires on the construction documents. The ventilation ductwork and intakes could not be priced from the set.
Pipe insulation was thinner than the specification
The equipment detail showed refrigerant line insulation about half as thick as the specification's minimum. Bidders and installers had two different thicknesses to price.
Airflows did not match the fan coil
In one apartment type, the supply outlets added up to more than the fan coil's scheduled airflow, and one return grille was tagged lower than both. Balancing targets were unclear.
Outdoor unit tags differed
Ductless outdoor units carried different tags on the roof plan than in their schedule. The set did not make clear which scheduled unit each roof tag meant.
Callouts pointed to the wrong unit plan
Two apartment callouts on the floor plans pointed to the wrong enlarged unit plan. Following them led to a different apartment layout.
Run it before you price the job
Upload the mechanical set
Add the mechanical drawings, schedules, details, and specifications. Add other disciplines' sheets if you want your work checked against them.
Choose what to check
Start with a review preset, add your own instructions or checklist, and choose whether to check building codes.
Verify and send the questions
Open each finding beside the drawing, check the cited sources, and turn the confirmed ones into RFIs before the job starts.
Findings are questions to verify
Groundbook AI flags possible conflicts and missing information and shows the source on each side. Your team verifies each one before acting. Design decisions stay with the engineer of record.
- Each finding links to the sheets and sections it compares
- Findings organized by severity, discipline, and impact
- Results typically ready in 20 minutes to 24 hours, depending on project size
See the workflow from every side
What mechanical contractors ask
Can it review only the mechanical drawings?
Yes. The uploaded documents and selected checks define the scope. Upload the mechanical drawings, schedules, details, and specification sections on their own, or add the architectural, structural, and electrical sheets to check your work against them.
What does it find on a mechanical set?
Equipment counts and tags that differ between the floor plans, the roof plan, and the schedules; airflows that do not match the schedule; missing outdoor air, controls, or power information; details that conflict with the specification; and callouts that point to the wrong place. Each finding shows the source on each side.
Does it check the mechanical code?
It can, when you choose to check building codes. We read the codes and amendments that states, counties, and cities publish online, and we detect the codes your drawings cite. Model codes such as the International Mechanical Code are licensed, so you can upload a copy you are licensed to use. Each finding cites the section. See how an IMC review works.
Who decides what to do with a finding?
Your team does. Each finding is a possible issue with its sources. You verify it and decide whether it becomes an RFI, a question to the general contractor, or nothing. Design decisions stay with the engineer of record.
Try it on a set you know
Upload a set you have already reviewed and compare our findings with yours. Your first project is free.