A mechanical quantity takeoff is the process of counting all the equipment in a construction drawing set so you know what to quote. It's the first step in every commercial project bid and for most HVAC distributors, it's also the slowest.
A mechanical quantity takeoff is the systematic process of identifying, counting, and listing all mechanical equipment items from a set of construction drawings. The output is a structured list of quantities used to build a quote. For HVAC and plumbing distributors, this covers terminal-level equipment: diffusers, grilles, fans, plumbing fixtures, boilers, pumps, and water heaters.
The term "takeoff" comes from the idea of taking measurements off a drawing. Before a distributor can price a commercial project, someone has to go through the construction drawings page by page and figure out exactly what equipment is needed and how many of each item.
On a mechanical drawing, that means two separate things. First, reading the equipment schedule a table the engineer includes that lists the specified equipment. Second, counting symbols on the floor plan because the schedule almost never includes quantities. Someone has to actually count every diffuser, grille, and fixture shown on the plan.
For a mid-size commercial project, that process takes a skilled project coordinator four to eight hours. For larger projects, longer. It has to happen before a single price is looked up and it happens manually, in a spreadsheet, on every bid.
Monaro reads the drawing set and produces a complete quantity takeoff in under 20 minutes. Here's what that frees up.
Most project coordinators follow the same steps on every project. It's reliable it's just slow.
The contractor or subcontractor sends a PDF. Often a large file 30, 60, sometimes 200+ pages across multiple disciplines.
Find the M-series sheets. Identify the equipment schedules and the floor plan sheets that show symbol layouts by floor.
Read the engineer's schedule and copy each equipment type into a spreadsheet. Note the model numbers, specs, and any callout references.
Go floor by floor. Count every diffuser, grille, fan, and fixture symbol shown on the plan. Cross-reference against the schedule for callout matches.
Compile the counts into a structured list by equipment type. Consolidate duplicates, note quantities by location or floor if required.
The takeoff goes into the quoting tool or spreadsheet. Pricing begins. This is the first moment that customer-facing work actually starts.
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About mechanical quantity takeoffs and how Monaro automates them.
A mechanical quantity takeoff is the process of counting and listing all mechanical equipment from a set of construction drawings. The output is a structured list of item types and quantities used to build a supplier quote. It covers terminal-level equipment — diffusers, grilles, fans, plumbing fixtures, boilers, pumps, and water heaters.
A manual takeoff for a mid-size commercial project typically takes 4 to 8 hours. The time depends on drawing complexity, number of floors, and how clearly the engineer has documented the equipment. With Monaro, the same takeoff completes in under 20 minutes.
Engineers typically specify equipment types and performance parameters in the schedule but leave quantity counting to the contractors and distributors who will actually supply and install the equipment. This means someone always has to go back to the floor plans and count symbols — that's the bulk of where takeoff time goes.
No. Contractors estimate full project costs including labour, ductwork, and installation. Distributors are quoting the equipment supply only — terminal-level items from the mechanical drawings. The scope, output format, and workflow are different, which is why general estimating software doesn't fit the distributor workflow well.
For HVAC and plumbing distributors, a mechanical takeoff covers terminal-level equipment: air terminals (diffusers, grilles, louvers), fans, plumbing fixtures, boilers, pumps, and water heaters. Central plant equipment like chillers and AHUs, and controls/BAS equipment, are typically handled by other suppliers and fall outside the distributor's scope.
Yes for distributor-scope terminal equipment, AI takeoff accuracy is production-ready. Monaro uses custom models trained specifically on mechanical construction drawings to extract schedules, detect symbols on floor plans, and cross-reference callouts. The output is a complete takeoff with no human review step required.
