Register / Login

LoopCAD 2024

The Spreadsheet-Mode in select OEM Add-ons now includes a “Room Area Calculator” and a “Multiple Spacing Calculator”.

HeatCAD® 2024

HeatCAD 2024 is a drawing-based software for fast and accurate calculation of residential heating and cooling loads. The Professional Edition supports ASHRAE and CSA residential heat loss calculations. The MJ8 Edition provides ACCA®-Approved Manual J® (8th Edition) calculations for residential heating and cooling loads (more on Manual J...). HeatCAD delivers advanced design features including integrated load calculations, automatic detection of unheated surfaces, and 3D CAD views. Try it now free for 30-days.

HeatCAD Overview Screenshot

HeatCAD is available in two different editions to best match your needs. For a list of functionality and new features in each edition, view the Feature Comparison PDF. The Video Demo provides a quick introduction, and the Tutorial lessons provide a much more in-depth look.

  • Floorplan drawing and importing (PDF, AutoCAD, JPG)
  • Automated heat loss calculations as you draw
  • ASHRAE and CSA residential heat loss calculations
  • Files compatible with LoopCAD® for radiant designs
  • 3D drawing views
MJ8 Edition
  • All features in Professional Edition, plus…
  • ACCA‐Approved Manual J (8th Edition) residential heating and cooling load calculations (more info...)
Floorplan Drawing
Creating floorplan drawings is very fast using the predefined rooms, doors, windows and other objects. Rooms can be resized by dragging the walls or corners, and they are easily docked together to create complex floor plans. The room shapes can be quickly edited to create very complex shapes, and you can also use the freehand drawing tools to create more complex shapes. HeatCAD also allows you to import an existing AutoCAD*, PDF** or scanned drawings to use as a template.
Floorplan Drawing Screenshot Zoom in icon
Heat Loss Calculations
HeatCAD calculates the room-by-room heat loss automatically as you draw the floorplan. And you can choose the residential calculation method that best suits your project – ASHRAE, CSA or Manual J. HeatCAD automatically detects rooms above or below and even supports cold partition calculations between rooms.
Heat Loss Calculation Screenshot Zoom in icon
Cooling Load Calculations
The MJ8 Edition provides calculation of both heating and cooling loads for residential applications. Full support for Manual J 8th Edition including block loads, room-by-room loads, infiltration and ventilation loads, detailed exposure diversity analysis, and room CFM estimates.
Cooling Load Calculations Screenshot Zoom in icon
ACCA®-Approved Manual J®
HeatCAD MJ8 is ACCA-Approved for Manual J (8th Edition) residential heating and cooling load calculations. This streamlines the acceptance of your submittals by local authorities requiring ACCA-Approved software calculations. Click here for more details.
ACCA-Approved Manual J
3D CAD Views
HeatCAD generates 3D views of your building that you draw in 2D. The new 3D views are a powerful aide for ensuring accurate heat load calculations, and are also very effective for communicating your design work. Validation of the placement and sizing of windows, doors and walls is made much faster and more precise with the 3D views.
3D CAD View Screenshot Zoom in icon
System Requirements
Operating System: Microsoft Windows 11, 10, 8, or 7 (SP1) with Internet Explorer 9 or higher, and with Microsoft .NET Framework 4.7.2
Processor: 2.0 GHz or higher recommended
RAM: 4 GB minimum, 8 GB or more recommended
Disk Space: 250 MB (Microsoft .NET Framework may require up to 4.5 GB)
Video: SVGA or higher (recommend resolution of 1920 x 1080 or higher). Support for DirectX 11 or OpenGL 2.0 (recommend minimum of 1 GB Video Memory)
Mouse: External mouse with scroll wheel (built-in mouse pads are not recommended)

AutoCAD is a registered trademark of Autodesk, Inc.
Acrobat and PDF are registered trademarks of Adobe Systems Incorporated.
ACCA, Manual J and Powered by ACCA Manual J are registered trademarks of the Air Conditioning Contractors of America. All rights reserved.