Top 10 Best Duct Sizer Software of 2026

Carrier Hourly Analysis Program models rooms, zones, air systems, plants, schedules, weather data, and operating scenarios within a shared project file. HVAC load calculations, system psychrometrics, equipment selection, and energy reports support commercial building design from preliminary sizing through comparative analysis.

The desktop workflow requires more setup than a focused ductulator and offers no documented public API for automated project generation. It fits engineers sizing a multi-zone office where hourly schedules, system operation, and Carrier equipment performance must be assessed together.

MagiCAD for Revit and MagiCAD for AutoCAD place HVAC components, sizing commands, and calculation results inside the host design environment. Manufacturer libraries include ducts, fittings, terminals, and equipment with dimensions and technical attributes. Calculation reports and schedules provide reviewable outputs for coordination and documentation.

The tradeoff is scope because MagiCAD requires more configuration and training than a simple standalone calculator. It fits consultancies designing large commercial buildings where design changes must remain coordinated across multiple systems. Users performing only isolated calculations may find the host-application dependency excessive.

CoolCalc Manual D suits residential designers who already use CoolCalc for Manual J and equipment selection. Shared project data reduces re-entry when room loads change, while the workflow covers supply and return branches. Browser delivery supports review between designers, contractors, and installers.

The integrated workflow depends on accurate upstream project inputs and offers less flexibility than detailed commercial engineering software. A residential replacement project can move from room loads to revised duct dimensions without rebuilding the calculation in another application.

McQuay Duct Sizer from Daikin Applied focuses on duct design and pressure loss calculations for HVAC duct systems. The workflow supports round and rectangular sizing inputs and returns duct dimensions tied to airflow targets while accounting for friction and fitting losses.

It is delivered as a web-based tool tied to McQuay product context, which reduces manual translation between manufacturer references and sizing outputs. Automation is mostly limited to form-driven calculations rather than external data import or API-based integration.

Wrightsoft Right-Suite Universal performs duct sizing and duct design workflows that translate HVAC system requirements into duct runs and pressure loss results. The solution supports the equal friction method and static pressure based calculation paths used for typical ventilation and duct system balancing work.

It also integrates duct layout inputs from common CAD file workflows to help carry duct routing context into the sizing step. Results can be exported for downstream use in documentation and coordinating disciplines that need consistent duct dimensions and pressure calculations.

Elite DUCTSIZE is a duct sizer used for translating airflow and system assumptions into duct design outputs. It focuses on quick sizing workflows for round and rectangular duct runs, including friction and pressure loss calculations that feed duct system balancing tasks.

The tool targets practical outputs like diameters or equivalent sizes, along with pressure loss reporting needed for fan selection. Its workflow is built around repeated calculations across multiple segments rather than manual chart lookups.

Design Master HVAC focuses on duct sizer workflows with worksheet-style inputs that map directly to duct design outputs. It supports round and rectangular duct sizing with pressure-loss calculations used for airflow routing and balancing documentation.

The tool emphasizes repeatable calculations across projects by keeping sizing assumptions visible in the same working area. Outputs are generated in a format meant for handoff to air terminal and balancing steps rather than only exploratory sizing.

Trane TRACE 3D Plus applies Trane’s duct design workflow to produce duct sizing outputs tied to HVAC air-side system assumptions. The tool supports duct system configuration for supply and return runs and generates sizing results using pressure-loss based calculations and selectable design constraints.

It is oriented around model-driven HVAC sizing where duct picks and airflow requirements come from the same design dataset. This reduces handoff friction between equipment selection assumptions and duct layout outputs compared with duct-only spreadsheets and charts.

Ductulator calculates HVAC duct sizing from airflow and design constraints to produce duct dimensions and pressure-loss outcomes. It supports common duct geometry options for sizing workflows and can iterate friction-based methods to meet airflow targets.

The tool’s core workflow stays focused on duct sizing outputs used in balancing and fan selection inputs, rather than end-to-end HVAC design. Automation is present through repeatable calculation runs that can be reused across projects with consistent assumptions.

ServiceTitan HVAC Duct Calculator is a duct sizing tool embedded in the ServiceTitan workflow rather than a standalone ductulator-style calculator. It converts room and system inputs into duct system airflow and pressure-loss results that can support duct layout decisions.

Output is organized around duct design choices like round versus rectangular sizing and includes friction-based pressure-loss calculations for balancing conversations. For teams already running ServiceTitan, it reduces re-entry of project data when moving from estimation and system design to duct specification.