CSI Division 23

HVAC Estimating Services Equipment, Duct, Piping and Controls

Mechanical estimates for HVAC subcontractors, sheet metal shops and general contractors self-performing mechanical work. Equipment comes off the schedules, ductwork is measured by size and gauge so the sheet metal weight is real, and hydronic piping is taken run by run with fittings counted rather than allowanced.

Full Priced Estimate US Standards Estimators 24–72 Hour Turnaround
Request This Estimate See a Work Sample
Estimate Pricing
Quoted per project
Send the drawing set — we scope it and come back with a fixed quote
Measured by estimators working to US construction standards
Priced on your cost library or a regional benchmark
Marked-up drawing set so every number is traceable
Delivered to Excel, CSV or straight into your BidcoreAI project
Typical turnaround 24–72 hours
CSI Division 23

What an HVAC Estimate Covers

Duct is priced by pound of metal and by fitting, which is the difference between an estimate a sheet metal shop can use and one it cannot.

Equipment

Every unit on the mechanical schedule, priced and rigged.

  • RTUs, AHUs, split and VRF systems
  • Boilers, chillers and cooling towers
  • Exhaust and supply fans
  • Rigging, curbs and vibration isolation
Ductwork

Linear feet and pounds by size, gauge and pressure class.

  • Rectangular and round duct by gauge
  • Fittings, transitions and takeoffs
  • Flexible duct and connectors
  • Pressure class and seal class
Air Distribution

Terminal devices counted from the reflected ceiling plans.

  • Diffusers, registers and grilles
  • VAV and fan-powered boxes
  • Dampers, louvers and smoke dampers
  • Filters and filter housings
Hydronic & Refrigerant Piping

Piping measured with fittings, valves and specialties.

  • Chilled, hot and condenser water
  • Refrigerant line sets
  • Valves, strainers and specialties
  • Pumps, expansion tanks and air separators
Insulation & Firestopping

Duct and pipe insulation by area and linear foot.

  • Duct wrap and duct liner
  • Pipe insulation by thickness
  • Jacketing and vapour barrier
  • Penetration firestopping
Controls, TAB & Start-Up

The scope that gets left out of fast estimates.

  • Control points and BAS wiring
  • Test, adjust and balance
  • Start-up and commissioning
  • O&M manuals and training
Deliverables

What You Get Back

Three files, every time — the numbers, the evidence behind them, and what we assumed to get there.

Priced Estimate

A line-item estimate in Excel or CSV, priced off your own cost library or a regional benchmark database, with material, labor, equipment and subcontract split out.

  • Line items grouped by CSI division
  • Material, labor and equipment split
  • Markup, overhead and profit applied
  • Excel, CSV or BidcoreAI project
Marked-Up Drawing Set

The measured drawing set comes back with every quantity traced on the sheet it came from, so your own reviewer can check a number without re-measuring it.

  • Colour-coded measurement overlays
  • Sheet and detail references
  • Scale and calibration recorded
  • Searchable PDF
Assumptions & Exclusions

A written basis of estimate: what was included, what was excluded, which allowances were carried, and the open questions worth issuing as an RFI before the bid goes out.

  • Basis of estimate memo
  • Inclusions and exclusions list
  • Allowances and contingencies
  • Suggested RFI list
Spec Coverage

Where It Lands in the Spec

Output is organised by current CSI MasterFormat sections, and mapped to your own cost codes on request.

23 05 00Common work results for HVAC
23 07 00HVAC insulation
23 09 00Instrumentation and control
23 21 00Hydronic piping and pumps
23 31 00HVAC ducts and casings
23 33 00Air duct accessories
23 37 00Air outlets and inlets
23 64 00Packaged water chillers
How It Works

From Drawing Set to Bid-Ready

1
Send the drawings
Upload the plan set, specifications and any addenda through the request form — or paste a Drive, Dropbox or WeTransfer link if the set is large.
2
Scope analysed by the platform agent, then reviewed manually
The BidcoreAI agent reads every sheet, schedule and specification section and returns the full scope. An estimator then reviews it line by line against the drawings, so nothing is carried on the agent alone and nothing in the set gets missed. You get a fixed quote and a delivery date before any work starts.
3
Measured and priced
Quantities are measured in the BidcoreAI takeoff workspace, then priced against your cost library or a regional benchmark database.
4
Delivered and reviewed
You get the estimate, the marked-up set and the basis of estimate — plus a call to walk the numbers if you want one.
Other services
Get Started

Need HVAC Estimating?

Upload the set through the request form. An estimator confirms scope and comes back with a fixed quote within four business hours.

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