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2026 Standards-Aligned Trade Tools: Electrical & HVAC Reference Workflows

Standards-Aligned Reference Workflow

2026 Electrical & HVAC Trade Calculators Code-Referenced Field Workflows

Use 2026 NEC electrical and ACCA HVAC calculators organized around real field workflow sequences — from load and breaker sizing to conductor checks, voltage drop, raceway fill, box fill, equipment selection, and duct sizing.

Workflow Spotlight

Featured Trade Workflows

The Full TradeHub Suite

Electrical Workflow Path

Mechanical & HVAC Workflow Path

Move from residential load basis to panel review, conductor sizing, ampacity checks, voltage-drop screening, conduit fill, and box fill using connected field-use calculators. Switch to the HVAC workflow for load screening, equipment selection, and duct sizing checks.

Start Electrical Load Start HVAC Load

TradeHub Workflow Map

Use Each Calculator as Part of a Field Reference Workflow

TradeHub Tools is organized around field workflow sequences, not standalone, isolated calculators. Electrical tools help field technicians move from load basis to breaker review, conductor sizing, ampacity checks, voltage-drop screening, conduit fill, and box fill. HVAC tools support the flow from BTU load calculation to equipment selection screening and duct sizing.

Electrical workflow

Start with the Residential Load Calculator, then review breaker/OCPD sizing using Breaker Size Calculator, continue through the Wire Size Calculator, Ampacity Calculator, Voltage Drop Calculator, Conduit Fill Calculator, and Box Fill Calculator.

Residential Load Calculator Breaker Size Calculator Wire Size Calculator Ampacity Calculator Voltage Drop Calculator Conduit Fill Calculator Box Fill Calculator

HVAC workflow

Use the BTU Load Calculator to establish the load basis, then screen equipment fit with Manual S® Calculation and duct sizing assumptions with the Manual D® Calculator.

BTU Load Calculator Manual S Calculation Manual D Calculator

Code Reference Support

References, Field Tables and Calculator Support

For the code-reference side of the workflow, review the Electrical Code References and Electrical Field Tables, where NEC field references, calculator support pages, and quick lookup charts explain the rules behind the trade calculators.

Reference Citation Log

Source Alignment Review

TradeHub calculators are mapped to published source references across 2026 NEC, ACCA Manual J®, S®, D®, and ICC standards to support traceability, field verification, and source-alignment review.

Access TradeHub Code Citation & Source Alignment Log

Published Code Sources

Reference workflows based on NFPA 70 (NEC), ACCA, and ICC (IRC/IPC) standards.

Field Use Scope

These tools are field-use reference tools for screening and planning. Always verify adopted code cycle, site conditions, equipment data, local amendments, AHJ requirements, and professional review needs before final field use.

Active and planned trade coverage

TradeHub Tool Suites

TradeHub groups live calculators and planned reference workflows by trade area so field users can start with the active suite and see what support paths are queued next.

01. Electrical Calculator Suite

Active Calculators

NEC electrical workflow tools from load basis through breaker, conductor, ampacity, voltage-drop, conduit fill, and box fill checks.

Reference queue

  • Feeder Sizing Workflow

02. HVAC Calculator Suite

Active Calculators

HVAC workflow tools for load screening, equipment selection, and duct sizing checks.

Workflow expansion

Continue the HVAC workflow chain: Load → Equipment → Ducts → Air Delivery, with Manual J®, Manual S®, and Manual D® already functioning as the current connected reference workflow.

  • Manual T® Air Distribution
  • Duct Friction / Static Pressure Visualizer
  • Equipment Performance Sanity Checks

03. Plumbing & Gas Queue

Planned Calculators

Planned plumbing and gas workflow modules are being reviewed for future code-aligned support.

Planned workflow modules

  • Sewer Slope (DFU) Analysis In Review
  • Gas Pipe Sizing (IFGC) In Review

Planned support paths

  • Storm Drain Flow Analysis
  • Water Supply Fixture Units (WSFU)

04. Structural & Roofing Queue

Reference Queue

Planned structural and roofing workflow references are queued for future field-use support.

Workflow modules

  • Beam Span Workflow In Review
  • Roof Area/Pitch Workflow In Review
  • Structural Finish / Estimating In Review

Supporting evaluation paths

  • Wind Load Lateral Resistance
  • Foundation Bearing Calculations
  • Live Load / Dead Load Tables