FR5 Software

FirstRate5® house energy rating software

FirstRate5® is an easy-to-use interactive tool with a graphic user interface that enables designers and thermal performance assessors to generate energy ratings for a home by tracing over floor plans. The software integrates the AccuRate calculation engine to estimate the annual heating and cooling energy and can be used to rate an existing design or as an interactive tool to optimise the design beyond compliance.

Release of FR5 v5.2.3a (3.13)

by FR5 | May 20, 2016

FirstRate5 v5.2.​3a (3.13) is now available as a free download from

This version is a minor bug fix release with a number of additional enhancements included. Full details are available in the software Release Notes, which can be opened by clicking ‘Release Notes’ under the Help menu.

Below is a summary of the main fixes and enhancements implemented as part of FR5 v5.2.3a.

  • Fixed two minor errors in the Diagnostics Report and Wall Type tab.
  • Fixed an issue that caused internal doors or openings to jump to the next wall in some cases.
  • Fixed an issue that resulted in incorrect azimuths to be displayed in the Analytics – Multiple Azimuth tab.
  • The interaction with openings (i.e. windows, doors) has been updated to help users more reliably click on openings and drag them.
  • The column width in the Properties table on the Plan tab is now fully adjustable.
  • The Name field of all openings is now updatable in the Plan tab and the Zoning tab.
  • Incorporated updated AFRC custom windows and roof windows libraries.

Current versions of FirstRate5

As stated previously, we are currently transitioning between FR5 v5.2.2 (3.13) and FR5 v5.2.3 (3.13).

Until 4 June 2016
 both v5.2.2 (3.1.3) and v5.2.3 (3.1.3) files will automatically calculate on the FirstRate5 website.

After 4 June 2016 v5.2.3 (3.13) files will continue to automatically calculate on the FirstRate5 website, however v5.2.2 (3.13) files will calculate by special request only.

For more information on FirstRate5 visit or email

Note: It is the user’s responsibility to ensure certificates are produced with the appropriate version. If a user chooses to inappropriately use an earlier version of FR5 to produce a certificate, they run the risk that a Building Surveyor will reject the certificate leading to further certificate costs.

Note: Installation of minor releases involving a letter change, eg,  v5.2.2b to v5.2.2c, will by default overwrite the previous version, while major releases involving a number change, eg, v5.2.2 (3.13) to v5.2.3 (3.13), will by default install beside older versions.