Quick Overview
- 1#1: Right-Suite Universal - Comprehensive HVAC design software for load calculations, duct sizing, equipment selection, and ACCA-compliant reports.
- 2#2: Hourly Analysis Program (HAP) - Hourly energy analysis and sizing tool for commercial building HVAC systems and load calculations.
- 3#3: TRACE 3D Plus - Advanced 3D building energy modeling software for HVAC system design and performance simulation.
- 4#4: Revit - BIM platform for MEP engineers to model, analyze, and document HVAC systems in 3D.
- 5#5: RHVAC - Residential HVAC load calculation software fully compliant with ACCA Manual J standards.
- 6#6: CoolCalc - Cloud-based Manual J residential load calculation tool with mobile support and instant reports.
- 7#7: EnergyPlus - Open-source whole-building energy simulation program for detailed HVAC system modeling.
- 8#8: OpenStudio - User interface and workflow tool for creating EnergyPlus models of HVAC and building systems.
- 9#9: IESVE - Integrated environmental simulation suite for HVAC design, energy analysis, and sustainability.
- 10#10: DesignBuilder - Easy-to-use 3D modeling interface for dynamic energy simulation and HVAC optimization.
Tools were selected based on a balanced evaluation of functionality (including compliance with standards and advanced modeling capabilities), usability, and value, ensuring they deliver exceptional performance across key HVAC workflows.
Comparison Table
This comparison table explores key AC software tools, from Right-Suite Universal and Hourly Analysis Program (HAP) to TRACE 3D Plus, Revit, RHVAC, and more, outlining their features, practical uses, and suitability. It equips readers to select the ideal tool for tasks like design, analysis, or project management by highlighting core differences and strengths.
| # | Tool | Category | Overall | Features | Ease of Use | Value |
|---|---|---|---|---|---|---|
| 1 | Right-Suite Universal Comprehensive HVAC design software for load calculations, duct sizing, equipment selection, and ACCA-compliant reports. | specialized | 9.6/10 | 9.8/10 | 8.4/10 | 9.2/10 |
| 2 | Hourly Analysis Program (HAP) Hourly energy analysis and sizing tool for commercial building HVAC systems and load calculations. | enterprise | 9.1/10 | 9.5/10 | 8.2/10 | 8.7/10 |
| 3 | TRACE 3D Plus Advanced 3D building energy modeling software for HVAC system design and performance simulation. | enterprise | 8.7/10 | 9.3/10 | 7.2/10 | 8.1/10 |
| 4 | Revit BIM platform for MEP engineers to model, analyze, and document HVAC systems in 3D. | enterprise | 9.1/10 | 9.6/10 | 7.4/10 | 8.2/10 |
| 5 | RHVAC Residential HVAC load calculation software fully compliant with ACCA Manual J standards. | specialized | 8.1/10 | 9.2/10 | 7.0/10 | 8.0/10 |
| 6 | CoolCalc Cloud-based Manual J residential load calculation tool with mobile support and instant reports. | specialized | 8.1/10 | 8.4/10 | 7.9/10 | 7.7/10 |
| 7 | EnergyPlus Open-source whole-building energy simulation program for detailed HVAC system modeling. | other | 8.2/10 | 9.5/10 | 4.0/10 | 10/10 |
| 8 | OpenStudio User interface and workflow tool for creating EnergyPlus models of HVAC and building systems. | other | 8.2/10 | 9.1/10 | 6.4/10 | 9.6/10 |
| 9 | IESVE Integrated environmental simulation suite for HVAC design, energy analysis, and sustainability. | enterprise | 8.2/10 | 9.1/10 | 6.7/10 | 7.6/10 |
| 10 | DesignBuilder Easy-to-use 3D modeling interface for dynamic energy simulation and HVAC optimization. | specialized | 8.1/10 | 8.4/10 | 7.8/10 | 7.6/10 |
Comprehensive HVAC design software for load calculations, duct sizing, equipment selection, and ACCA-compliant reports.
Hourly energy analysis and sizing tool for commercial building HVAC systems and load calculations.
Advanced 3D building energy modeling software for HVAC system design and performance simulation.
BIM platform for MEP engineers to model, analyze, and document HVAC systems in 3D.
Residential HVAC load calculation software fully compliant with ACCA Manual J standards.
Cloud-based Manual J residential load calculation tool with mobile support and instant reports.
Open-source whole-building energy simulation program for detailed HVAC system modeling.
User interface and workflow tool for creating EnergyPlus models of HVAC and building systems.
Integrated environmental simulation suite for HVAC design, energy analysis, and sustainability.
Easy-to-use 3D modeling interface for dynamic energy simulation and HVAC optimization.
Right-Suite Universal
specializedComprehensive HVAC design software for load calculations, duct sizing, equipment selection, and ACCA-compliant reports.
Right-Draw integration for seamless 2D/3D plan takeoff and automated duct sizing directly from architectural drawings
Right-Suite Universal from Wrightsoft is a professional-grade HVAC software suite designed for accurate air conditioning and heating load calculations, duct sizing, and equipment selection using ACCA Manual J, D, and S standards. It offers integrated tools for block and room-by-room load analysis, 3D duct design, and plan takeoff via the Right-Draw module, supporting residential and light commercial projects. The software automates complex calculations, generates professional reports, and integrates with a vast database of equipment and weather data for precise AC system design.
Pros
- ACCA-approved precision in load calcs, duct design, and equipment selection
- Integrated drawing and takeoff tools for efficient workflows
- Extensive libraries for equipment, weather, and building materials
Cons
- Steep learning curve for non-experts
- High cost may deter small firms
- Windows-only with limited mobile integration
Best For
Professional HVAC contractors and engineers handling complex residential and light commercial AC system designs.
Pricing
Annual subscriptions start at around $2,500, with perpetual license options and modular add-ons available.
Hourly Analysis Program (HAP)
enterpriseHourly energy analysis and sizing tool for commercial building HVAC systems and load calculations.
DOE-2 derived hourly simulation engine for pinpoint accurate energy predictions over 8,760 hours annually
The Hourly Analysis Program (HAP) by Carrier is a professional-grade HVAC software for detailed building load calculations, equipment sizing, and whole-building energy analysis. It uses a DOE-2-based engine to perform true hourly-by-hour simulations of heating, cooling, and energy use under varying weather and occupancy conditions. HAP includes graphical modeling tools, extensive Carrier equipment libraries, and compliance reporting for standards like ASHRAE 90.1 and Title 24.
Pros
- Exceptionally accurate hourly simulations with DOE-2 engine
- Vast library of HVAC equipment data, optimized for Carrier products
- Robust reporting, graphics, and energy code compliance tools
Cons
- Steep learning curve for new users
- Windows-only platform with limited mobile support
- Higher upfront cost may deter small firms
Best For
HVAC engineers and mechanical designers handling complex commercial projects requiring precise load calculations and energy modeling.
Pricing
Perpetual licenses from $1,995 to $4,995 based on modules, plus ~$500-$1,000 annual maintenance.
TRACE 3D Plus
enterpriseAdvanced 3D building energy modeling software for HVAC system design and performance simulation.
Integrated 3D modeler with automated zone creation and Trane equipment performance data for seamless design-to-simulation workflow
TRACE 3D Plus is a advanced whole-building energy modeling software from Trane Technologies designed for HVAC engineers to simulate energy use, perform load calculations, and optimize system designs in commercial and institutional buildings. It features 3D geometry modeling, detailed room-by-room analysis, and integration with Trane's equipment library for accurate sizing and performance predictions. The tool supports ASHRAE-compliant simulations, life-cycle cost analysis, and compliance with energy codes like Title 24 and IECC.
Pros
- Comprehensive HVAC system modeling with Trane-specific equipment libraries
- Powerful 3D geometry builder for intuitive space definition
- Robust energy simulation and optimization tools for code compliance
Cons
- Steep learning curve requiring significant training
- High licensing costs with complex pricing structure
- Primarily Windows-based with limited cloud integration
Best For
Professional HVAC engineers and engineering firms handling large-scale commercial building projects requiring precise energy modeling and equipment selection.
Pricing
Annual subscription starting at approximately $5,000-$10,000 per user depending on modules; custom quotes required from Trane.
Revit
enterpriseBIM platform for MEP engineers to model, analyze, and document HVAC systems in 3D.
Unified parametric model where changes in one view or discipline automatically propagate across the entire project
Revit, developed by Autodesk, is a premier Building Information Modeling (BIM) software tailored for architects, engineers, and construction professionals. It allows users to design, model, and document complex building projects in a single, intelligent 3D environment that integrates architectural, structural, and MEP systems. Revit supports collaborative workflows, parametric modeling, and automation of drawings and schedules, making it a cornerstone for modern AEC workflows.
Pros
- Comprehensive BIM capabilities with parametric components and real-time updates
- Seamless integration with other Autodesk tools like AutoCAD and Navisworks
- Robust collaboration features including cloud-based worksharing
Cons
- Steep learning curve for beginners
- High subscription cost limits accessibility for small firms
- Performance can lag with very large, complex models
Best For
Medium to large AEC firms requiring integrated BIM for multidisciplinary collaboration and project delivery.
Pricing
Annual subscription at approximately $2,985 USD per user; included in Autodesk AEC Collection for $3,575/year.
RHVAC
specializedResidential HVAC load calculation software fully compliant with ACCA Manual J standards.
Advanced psychrometric charting and multi-zone load analysis for precise AC system optimization
RHVAC from Elite Software (elitesoft.com) is a specialized residential HVAC design tool that performs precise ACCA Manual J load calculations, Manual D duct sizing, and equipment selection for air conditioning and heating systems. It supports detailed zoning, psychrometric analysis, and generates comprehensive reports for HVAC professionals. Widely used for decades, it ensures compliance with industry standards while optimizing system efficiency in residential projects.
Pros
- Highly accurate Manual J and Manual D calculations per ACCA standards
- Comprehensive equipment database and zoning capabilities
- Robust reporting and integration with other Elite Software tools
Cons
- Dated Windows-based interface feels outdated
- No cloud or mobile access, strictly desktop-only
- Steep learning curve for new users despite powerful features
Best For
Experienced residential HVAC contractors needing precise load calculations and duct design for compliance-heavy projects.
Pricing
Perpetual license at approximately $995, with optional updates and bundles available.
CoolCalc
specializedCloud-based Manual J residential load calculation tool with mobile support and instant reports.
Automated integration of precise hyper-local weather stations and 3D heat gain visualization for superior accuracy.
CoolCalc is a cloud-based software specialized in performing ACCA Manual J cooling load calculations for residential and light commercial HVAC systems. It enables users to input building details, insulation, occupancy, and local weather data to accurately size air conditioning equipment and avoid costly oversizing or undersizing. The tool generates detailed, compliant reports and supports quick iterations for design optimization.
Pros
- Highly accurate Manual J-compliant calculations with integrated local weather data
- Cloud accessibility from any device for on-site use
- Professional-grade reports exportable for permits and client presentations
Cons
- Primarily focused on load calcs, lacking full HVAC design or duct sizing tools
- Subscription pricing may not suit infrequent users
- Internet dependency limits offline functionality
Best For
HVAC contractors and engineers who need fast, precise AC load calculations for residential projects.
Pricing
Starts at $49/month for basic plan (billed annually at $490/year), with higher tiers up to $99/month; free trial available.
EnergyPlus
otherOpen-source whole-building energy simulation program for detailed HVAC system modeling.
Simultaneous, coupled solution of building thermal loads and HVAC systems for industry-leading simulation accuracy.
EnergyPlus is an open-source whole-building energy simulation software developed by the U.S. Department of Energy, specializing in detailed modeling of heating, cooling, ventilation, and air conditioning (HVAC) systems. It performs hour-by-hour simulations of building energy use, including complex AC interactions with weather, occupancy, and equipment. Ideal for energy audits, code compliance, and optimization, it supports advanced features like variable refrigerant flow and chilled water systems.
Pros
- Exceptionally accurate and detailed HVAC/AC modeling with integrated heat balance
- Free open-source with extensive component libraries and weather data support
- Highly customizable via IDF files and scripting for research-grade simulations
Cons
- Steep learning curve requiring expertise in text-based input
- No built-in GUI; relies on third-party tools like OpenStudio
- Computationally intensive for large models
Best For
Experienced building engineers and researchers needing precise, whole-building AC system simulations for design and compliance.
Pricing
Completely free (open-source, no licensing fees).
OpenStudio
otherUser interface and workflow tool for creating EnergyPlus models of HVAC and building systems.
Deep integration with EnergyPlus for highly accurate, physics-based simulations of complex AC and HVAC interactions
OpenStudio is an open-source cross-platform software suite for whole-building energy modeling and simulation, tightly integrated with the EnergyPlus engine. It enables users to design and analyze HVAC systems, including air conditioning components like chillers, VAV systems, and DX units, through a graphical interface and SketchUp plugin. Primarily used for energy efficiency studies, LEED certification, and code compliance, it supports detailed parametric analysis and optimization of AC performance in buildings.
Pros
- Comprehensive HVAC modeling capabilities including advanced AC systems
- Free and open-source with strong community support
- Powerful automation tools like OpenStudio Standards for workflows
Cons
- Steep learning curve requiring EnergyPlus knowledge
- Interface can feel clunky for beginners
- High computational demands for complex simulations
Best For
Experienced HVAC engineers and energy modelers needing precise, free simulation tools for AC system design and building performance analysis.
Pricing
Completely free (open-source, no licensing costs)
IESVE
enterpriseIntegrated environmental simulation suite for HVAC design, energy analysis, and sustainability.
Coupled dynamic simulation of HVAC systems with CFD airflow and whole-building energy models for precise performance predictions.
IESVE (Integrated Environmental Solutions Virtual Environment) is a comprehensive building performance simulation platform used for whole-building analysis, including energy modeling, HVAC system design, thermal comfort, daylighting, and CFD airflow simulations. It allows architects and engineers to optimize building performance from concept to compliance, with detailed HVAC load calculations, plant sizing, and dynamic system simulations. The software integrates multiple domains into a single environment for accurate, standards-compliant predictions in sustainable design workflows.
Pros
- Powerful integrated simulations for HVAC, energy, and airflow in one platform
- High accuracy for compliance with standards like ASHRAE and LEED
- Extensive library of HVAC components and dynamic modeling capabilities
Cons
- Steep learning curve requiring specialized training
- High resource demands and hardware requirements
- Expensive licensing with modular pricing that adds up quickly
Best For
MEP engineers and sustainability consultants in large firms tackling complex HVAC and building performance projects.
Pricing
Modular annual subscriptions starting at $5,000-$10,000 per user, scaling to $20,000+ for full suite; quote-based.
DesignBuilder
specializedEasy-to-use 3D modeling interface for dynamic energy simulation and HVAC optimization.
Drag-and-drop 3D geometry creation directly linked to dynamic EnergyPlus simulations for HVAC/AC optimization
DesignBuilder is a user-friendly 3D modeling and energy simulation software built on the EnergyPlus engine, enabling architects and engineers to perform detailed building performance analysis including HVAC systems like air conditioning. It supports energy modeling, daylighting, CFD, and comfort simulations to optimize designs for efficiency and compliance. While versatile for whole-building simulations, it provides robust tools for AC system sizing, zoning, and performance prediction.
Pros
- Intuitive 3D interface for quick model building
- Accurate EnergyPlus-based HVAC and AC simulations
- Comprehensive reporting for energy and comfort analysis
Cons
- Steep learning curve for advanced HVAC customization
- Relatively high licensing costs
- Limited native support for some niche AC equipment libraries
Best For
Architects and MEP engineers needing integrated 3D modeling with detailed AC and building energy simulations.
Pricing
Perpetual licenses start at ~£2,000-£5,000 depending on modules, plus annual maintenance (~20% of license cost); educational discounts available.
Conclusion
This review showcases the best AC software, with Right-Suite Universal leading as the top choice, offering comprehensive features from load calculations to ACCA-compliant reports. Hourly Analysis Program (HAP) and TRACE 3D Plus follow as strong alternatives, with HAP excelling in commercial energy analysis and TRACE 3D Plus impressing with advanced 3D modeling and simulation, each tailored to distinct needs.
Begin your HVAC design journey with Right-Suite Universal—the top-ranked tool designed to streamline your workflow and deliver superior results.
Tools Reviewed
All tools were independently evaluated for this comparison
Referenced in the comparison table and product reviews above.