Arizona project estimating
HVAC Estimating Services in Arizona
F&K prepares HVAC takeoffs for Arizona mechanical contractors bidding rooftop systems, tenant improvements and equipment replacements. Quantities follow the designer’s equipment selections and distribution drawings. We distinguish equipment procurement from ductwork, insulation, controls and installation interfaces so a mechanical quote can be checked against the whole specified package.
Remote estimating support for Arizona projects. This service page does not represent a local office.
Updated · F&K estimating methodology
Use the actual jurisdiction and scheduled equipment
Phoenix publishes its adopted building, mechanical and energy codes with local amendments. That reference is useful for projects inside Phoenix, but it does not establish the code basis for every Arizona municipality. Include the project jurisdiction and applicable permit documents in the bid package. The estimate records the specified system and unresolved drawing conflicts rather than selecting equipment based on a city name.
For a rooftop installation, review the scheduled performance and accessories alongside the roof and electrical details. Equipment capacity, outdoor-air provisions and controls are design inputs. Crane access, curb compatibility, roof penetrations and occupied-space restrictions are estimating inputs that need their own scope. A Tucson alteration, a Phoenix retail fit-out and a northern Arizona replacement should each retain their actual project conditions.
What the takeoff can include
Equipment schedule
Count rooftop units, split systems, fans and terminal devices by tag. Distinguish factory accessories, field accessories and owner-furnished equipment.
Duct distribution
Measure supply, return, exhaust and outside-air systems by size and specification. Separate fittings, dampers and flexible connections from straight duct.
Piping and insulation
Track refrigerant or hydronic routes and insulation requirements where shown. Clarify condensate connections and work assigned to plumbing.
Installation interfaces
Identify curb adapters, lifting, supports, power connections and controls. Record testing and balancing as a defined scope rather than an unlabelled contingency.
Measurement and scope checks
We start with a tag-by-tag equipment register and trace each unit to its duct, piping, power and controls references. Distribution quantities are grouped by size and system to support supplier comparison. A replacement that reuses an existing curb or duct connection is listed differently from a new installation. Unknown reuse conditions are flagged so the contractor can inspect or qualify them before committing to a bid.
Illustrative duct-surface takeoff
For a hypothetical rectangular duct run, assume a 24-by-18-inch section and 100 feet of straight length. This is a geometric example only.
| Step | Calculation | Result |
|---|---|---|
| Perimeter | 2 × (2 ft + 1.5 ft) | 7 ft |
| Straight duct surface | 7 ft × 100 ft | 700 SF |
| Fittings and seams | Measured or allowed separately | Not included in 700 SF |
Gauge, pressure class, reinforcement, liner, external insulation and fitting fabrication come from the specification. Converting this surface area to sheet-metal weight requires the selected material basis.
Deliverable, pricing basis and quote
Request a mechanical workbook by system, equipment tag and material category. For priced estimates, share vendor equipment quotations and your installation assumptions, including access and shutdown requirements. The output can separate purchase costs from installation labor and outside services. F&K confirms the deliverable, fee, revision allowance and schedule after reviewing the mechanical set and associated coordination sheets.
Explore our full hvac estimating services scopeQuestions about this scope
Will you size air-conditioning equipment for Arizona weather?
The estimating scope measures and prices the equipment selected by the designer. Load calculations and system sizing require separate design work. Provide the scheduled models or performance requirements and identify any unresolved selections.
Can the estimate separate supply-only from installed costs?
Yes. Identify the equipment supplier responsibilities and the installation scope. Factory options, freight, crane service, curbs, field wiring and startup can then be shown separately for a more useful quotation comparison.
What if an existing rooftop curb might be reused?
Provide dimensions and a verified reuse detail where available. Otherwise, keep reuse as an assumption and price an adapter or replacement alternative only on an identified basis. Photographs alone may not establish compatibility.
Official project references
- City of Phoenix building construction codes
Official Phoenix code and amendment reference. Check the actual jurisdiction and permit basis for each Arizona project.