Top 10 Best Hvac Planning Software of 2026

Right-Suite Universal is a comprehensive HVAC design and sales software suite from Wrightsoft, designed for professional contractors to perform accurate residential and light commercial load calculations, duct and piping design, equipment selection, and proposal generation. It integrates powerful modules like Right-Draw for intuitive floor plan creation, Right-Calc for ACCA Manual J-compliant sizing, Right-Ducts for automated duct layout, and Right-Equipment for database-driven selections. The software streamlines the entire HVAC planning workflow, from site survey to client presentation, ensuring compliance with industry standards like Manual J, D, S, and N.

Carrier's Hourly Analysis Program (HAP) is a robust HVAC engineering software designed for precise load calculations, energy modeling, and system sizing through hourly whole-building simulations. It enables detailed modeling of buildings, zones, HVAC systems, and equipment while incorporating weather data, schedules, and ASHRAE-compliant methods for peak loads and annual energy use. HAP supports design optimization for energy efficiency, comfort, and compliance with standards like ASHRAE 90.1, making it a staple for professional HVAC planning.

TRACE 3D Plus is a powerful whole-building energy simulation software from Trane Technologies, designed specifically for HVAC engineers to perform detailed load calculations, energy modeling, and system sizing. It supports 3D geometry creation, hourly simulations based on DOE-2 engine, and optimization for energy efficiency, peak loads, and compliance with standards like ASHRAE 90.1 and Title 24. The tool excels in modeling complex HVAC systems, including chillers, VRF, and radiant systems, with integration to Trane's equipment libraries for accurate performance predictions.

RHVAC from Elite Software (elitesoft.com) is a professional-grade residential HVAC load calculation tool that performs precise heating and cooling load assessments based on ACCA Manual J 8th Edition standards. It enables users to model building envelopes, internal loads, infiltration, and zoning to determine accurate equipment sizing needs. The software generates detailed reports for permits, bids, and system design, with extensive databases for materials, windows, and over 50,000 HVAC equipment models.

CoolCalc is a cloud-based HVAC software specializing in ACCA-compliant Manual J, D, and S load calculations for residential and light commercial buildings. It streamlines the process of inputting building data, climate information, and equipment details to generate precise heating and cooling load reports. The tool outputs both block and room-by-room calculations, aiding contractors and engineers in accurate system sizing and design.

Loadsoft by Carmelsoft is a desktop-based HVAC load calculation software tailored for residential and light commercial buildings. It performs precise heating and cooling load calculations compliant with ACCA Manual J 8th Edition, ASHRAE fundamentals, and other standards. Users input detailed data on building geometry, materials, insulation, infiltration, and internal loads to generate professional reports for accurate equipment sizing.

Revit MEP, part of Autodesk's Revit suite, is a comprehensive BIM (Building Information Modeling) platform tailored for mechanical, electrical, and plumbing design, with robust HVAC capabilities. It allows users to create detailed 3D models of HVAC systems, including ducts, piping, equipment sizing, load calculations, and energy simulations. The software supports clash detection, fabrication coordination, and seamless integration with other Autodesk tools for collaborative workflows in large-scale building projects.

Diamond System Builder is a free web-based tool from Mitsubishi Electric designed for planning ductless mini-split HVAC systems. It allows users to input room-by-room load data, select indoor units, match them to outdoor units, and handle branch box configurations for multi-zone setups. The software generates professional diagrams, proposals, and submittal packages to streamline contractor workflows.

VRV Xpress is a specialized HVAC planning software from Daikin Applied, focused on designing and configuring Variable Refrigerant Volume (VRV) systems for commercial applications. It streamlines equipment selection, piping layout design, refrigerant quantity calculations, and generates professional reports for project documentation. Primarily tailored for Daikin VRV products, it ensures compliance with manufacturer guidelines while optimizing system efficiency.

EnergyPlus is a state-of-the-art, open-source whole-building energy simulation engine developed by the U.S. Department of Energy for modeling heating, cooling, ventilation, lighting, and other energy flows in buildings. It excels in detailed HVAC system simulations, including equipment performance, controls, and interactions with building envelopes. Widely used for energy efficiency analysis, compliance, and research, it supports complex geometries and schedules but requires technical expertise.