The purpose of this software is to provide you with total cooling and heating loads for a building so that you may properly specify the correct size HVAC equipment (whether it is a packaged rooftop unit or a boiler). This program is geared specifically toward the HVAC engineer, architect, design/build mechanical contractor, and building maintenance supervisor.

Loadsoft 6.0 is now compatible with Autodesk Building Systems (ABS). This allows you to easily import building information (using gbXML) from an ABS drawing and calculate the total cooling and heating loads. Then, you can export the total loads back to the ABS drawing so you can properly design the duct or piping system.

• The Loadsoft 6.0 software has been entirely re-written to take advantage of the latest programming and back-end database technologies. In addition, the cooling and heating load calculations have been updated to conform to the ASHRAE 2005 Fundamentals radiant time series (RTS) calculations from Chapter 30. The RTS calculations more accurately model the load analysis of a building, taking into account latency of load contributions throughout the day.
• A new and improved user interface (UI) has been designed making the input process much faster and more intuitive than previously. This improved UI includes a tree-like navigation area that allows the user to view all systems, zones, and areas and their relationships.
• The user can easily replicate entire projects so as to reuse common information.
• An additional 300 cities have been added to the weather database making the total 800.
• Individual areas can be grouped by zones for each system.
• An unlimited number of system and area templates can now be created so that the user can create new systems and areas using common data from the templates.
• The user can input separate cooling and heating ventilation rates.
• The number of air changes can be specified for the system ventilation inputs.
• Boiler cooling and heating temperature differences and boiler efficiency values can be specified for each system.
• Simple duct sizes are now calculated for each area based upon CFM.
• The user can specify system-wide preheating properties.
• The user can perform cooling and heating equipment selection for each system.
• The software can easily integrate with third-party equipment databases used for the equipment selection discussed above.
• A local equipment database has also been added allowing the user to create a customized equipment list.
• The user can easily move or copy systems, zones, and areas within a project.
• The user can specify door types along with the door widths, heights, u-values, and quantities.
• Up to 10 different types of walls and windows can be specified for each area.
• Up to 7 different types of roofs can be specified for each area.
• Skylight inputs are now separate from the window inputs.
• The user can now specify electrical equipment latent loads in addition to sensible loads.
• The appliance database has been expanded to include more specialized office and home equipment.
• The u-value construction material database has been expanded to include more common materials.
• The user can now assign individual occupancy and diversity schedules to people, lighting, equipment, and miscellaneous load contributions.
• Input checks have been incorporated so the user can confirm that inputs are correct be calculating
• Quick calculation functionality has been added to each area so that the user can instantly see the cooling and heating load contributions for the area.
• All input and output data can be exported to Microsoft Word and Excel templates.
• Reports can be exported to XML format so that they can be shared with others across networks and operating systems other than Windows.
• The "what-if scenario" functionality includes more inputs to perform the what-if analysis.
• Now compatible with Autodesk Building Systems using gbXML
• . . . and more.

• Input up to 1000 detailed area inputs and 500 detailed system inputs
• Inputs for all directional orientations
• Inputs for roof, wall, door, and window angles
• Inputs for internal loads including people, lighting, equipment, infiltration, exhaust and miscellaneous loads
• Inputs for window shading and partitions
• Inputs for ventilation, infiltration, fan heat gains, and safety factors

• 800 city weather database including the United States and the entire world
• A full office and home appliance/equipment database for sensible and latent loads
• HVAC Equipment database
• Construction material database with u-values for walls, roofs, floors, doors, and windows

• A summary output of total commercial HVAC loads
• A detailed output broken down by each component load (i.e. - walls, roofs, windows, people, etc)
• A psychrometric properties output
• A wall, door, and window orientation output
• Extensive graphing capabilities including bar, line, and pie charts
• Includes capability to export to custom Microsoft Word and Excel documents
• Can export to html and text files · Can export to XML files

• Support for both English and Metric units.
• Simple mathematical capabilities at every input.
• Global data editing of all inputs.
• Capabilities for rotating walls and windows in any direction.
• A What-If Scenario" command that permits the selection of a range of specific values for one input, while the software outputs the corresponding loads. For example, if cooling loads were sought for a buildings cooling temperature setpoints with a range 72 - 76 degrees, the cooling outputs for each step would be calculated and displayed on one page.