2025 HotFix 1 June 2025

• Fixed an error where some some buildings with registry ID would be cleared.

2025 May 2025

• Initial Release

2023 HotFix 2019 June 2025

• Fixed an error where some some buildings with registry ID would be cleared.

2023 HotFix 2018 May 2025

• Fixed an error where some errors with the building were not being reported.
• Fixed a problem where some reports could not be done in the same run.

2023 HotFix 2017 April 2025

CRITICAL - fixed an issue occuring on some machines where Energy Star 3.2 will fail. The failure appears to be related to Windows security preventing REM/Rate from reading certain files. It now ignores reading those files.

Fixed an issue with RESNET registry for airPlus.

2023 HotFix 2016 April 2025

Fixed a problem with IECC2021/IECC2018 Performance Path.

2023 HotFix 2015 March 2025

Fixed a problem with Energy Star 3.2 UA Tradeoff

Fixed an issue RESNET registry running Energy Star 3.2 check when not needed sometimes.

Added SEER2 and HSPF2 to building error checks.

Fixed an incorrect value in IECC2018 UA check.

2023 HotFix 2014 February 2025

Fixed a problem with Energy Star 1.1 MF Home

Fixed an issue with not persisting the export selections in Tools->Options.

2023 HotFix 2013 February 2025

CRITICAL FIX - In Hotfix 2012 there was a critical mapping error. Please update and do not use that version. The mapping error was corrected here and extensive tests as well a reevaluation of RESNET Accreditation done.

Fixed a crash error caused by doing Print in the Analysis Panel.

2023 HotFix 2012 February 2025

Discovered a mapping error in heating systems. Impacts where Electric Air Distribution is treated as an ASHP.

Fixed a mapping error in roofs.

Added a fix to address random crashes of REM/Rate.

2023 HotFix 2011 December 2024

Fixed a bug in certain saves.

Did an audit of RESNET Registry code and fixed some issues with Energy Star 3.2 submissions.

2023 HotFix 2010 November 2024

Cleaned up some minor internal code.

2023 HotFix 2009 November 2024

IECC Fixed error that caused some IECC's to fail.

2023 HotFix 2008 October 2024

IECC2021 total rework from 16.3.4

2023 HotFix 2007 October 2024

IECC2021 total rework from 16.3.4

Fixed Handling a Cove heater.

Energy Star 3.2 Labels added

HotFix 2006 October 2024

Fixed IEC2021 ERI report to not include the IECC2009UA test.

HotFix 2005 September 2024

Detect an engine fault that was not caught in Reports and corrected the message displayed.

Altered the way failures are displayed in the UA Tradeoff. Getting further input from users.

HotFix 2004 September 2024

CRITICAL FIX- corrected an error in how recirculating DHW was being analyzed. Corrects an error introduced in HotFix 2001.

Added the Energy Star 3.2 Home report to the report list. This shows both the ERI conformance but also does the UA tradeoff analysis. If failure of the UA tradeoff the 3 largest contributors to that failure are listed.

HotFix 2003

Administrative fix for Trial Mode expiration check.

HotFix 2002

CRITICAL FIX - Fixed a problem where the ventilation fan was recovery not being sent to the engine correctly resulting in HERS/ERI being N/A with no error.

Fixed a typo where we had conditioned space to just conditioned space.

Navigation Tree - fixed so it shows up for New Building as well as stability issues addressed.

Licensing - fixed so admintator backup can alter print permissions.

Web URL's - fixed the Update link to point to the correct url in the new website.

HotFix 2001

CRITICAL FIX - Fixed a bug in DHW Distribution. Incorrectly modeled recirculation of DWH.

Added features and modifications for REM/Rate™ include:

General:

• Licensing code was totally changed to provide more control for contractors over users. It also allows for better customization of features within REM/Rate for specific uses. The RATIK.INI files are not longer used. Each user is required to have their own user name/password. Each authorized users install of REM/Rate is locked to the computer.
• REM/Rate 2023 has the latest NREL engine. It provides the latest checks from 301-2019.
• REM/Rate 2023 also has a new Navigation Tree allowing to better visualize the building and its associations. The tree also shows all pertinent data entered for the building. Clicking on an entry in the tree will bring up the associated page view. This should make moving through the building quicker. Additionally the "hands" have been removed. The values in the Navigation Tree are automatically updated from entered data in the pages. Additionally, the Navigation Tree fully expanded can be saved to a file or printed by right clicking on any node to either expand, collapse, print, or save the tree.
• Like 16.3.4 REM/Rate 2023 will continue having HotFixes applied. These will include new standards that are suppored by the engine, any interface enhancements, RESNET registration changes and other items that do not require either a building change or a different engine.

Added features and modifications for REM/Rate™ include:

General:

• Update to new version of Hourly Engine. Now supports 301-2019ABCD.
• Improvements in error messaging coming back from Hourly Engine.
• Display CO2 Index in QA.
• Allows entry of Registry ID on building downloaded from RESNET post 16.2.1
• Allows saving a building for modification and updating RESNET registry.
• IECC 2021.
• Many bug fixes and new error messages

16.3.4 HotFix 1027 April 2025

• Fixed an issue where print would sometimes cause a crash.

16.3.4 HotFix 1026 December 2024

• Fixed a bug in certain saves.

HotFix 1025 November 2024

• IECC Fixed error that caused some IECC's to fail.

HotFix 1024

• Allowed modeling Cove heaters

HotFix 1023 October 2024

• Fixed inconsitenceies in how IEC2021 UA, Performance and ERI UA Tradeoff calculations. These are taken from the September 2021 version of the standard.

HotFix 1022

• Fixed IEC2021 ERI report to not include the IECC2009UA test.

HotFix 1021

• Fix to how AG Wall shell is calculated.

HotFix 1020

• Critical Fix - Found an internal error which would cause an engine failure for some balanced ducts work.
• Critical Fix - Discovered a change in RESNET QA would fail a building with Note content of special characters. It would reject the building with no error listed. Added code to encode the special characters in the note.
• Prevented -0.0 from showing up. Was changed to 0.0. For clarification in floating point both -0.0 and 0.0 are identical but are allowed.

HotFix 1019

• Critical Fix - 1018 had an error in trying to prevent loading a bad building file causing a crash. It resulted in failing to load a valid building.

HotFix 1018

• Added error detecting that the overhang distance to top of window is greater than or equal to overhang distance to bottom of window creating a window of 0 height.
• Refined error given on a single building where no valid reports are selected.
• Fixed an error where the message Merge.ll is not found.
• Removed Build number from title and changed to HotFix in About.
• Implemented a fix for RESNET submission returning and error of . when a special character is contained within a string such as tab.
• Implemented Evaporative Cooler as valid.
• Fixed an issue where the Analysis page shows wrong title for HERS as ERI (Typo).
• Detect an error where a door has an area of 0.
• Added missing weather file USA_TX_Corpus.Christi.NAS.722515_TMY3.

HotFix 1017

• Fixed bug causing file not found Merge.ll in reports
• Caught an error where a window has an overhang but the distance to top is greater than or equal to distance to bottom.
• Refined the error given for a single building report from a choice of 4 reasons to the actual reasons.

Build 1016

• Fixed a bug in Register to RSENET that cuased the building to be registered but not updated.
• Limited Dehumidifers to Conditioned Space
• Fixed a bug introduced for IECC2021 Label and Certificate

Build 1015

• Altered Trial mode to produce sample data
• Fixed an issue with export to data base
• Changed DOE standards to use ERI instead of HERS

Build 1014

• Fixed runing LEEDS reports.
• Added PSD version change for export to include build number.

Build 1013

• Fixed runing NGBS reports.
• Added PSD reference home changes.
• Corrected some error checking on heat pumps
• Added build number to the title.

Build 1012

• Fixed batch labels error.
• Fixed HERS Label crash.
• Changed Energy Star report to show ERI instead of HERS
• Fixed 2 building reports to correctly load the second building.

Build 1011

• Fixes a couple of location errors in EnergyStar reporting.
• Fixes a persistent problem in batch reporting causing crashes.
• Fixes internal issue causing buildings to be kept in memory when not needed anymore.
• Fixed an issue with updating locations in foundation walls.
• Fixed a problem causing a crash when runnng reports for 301-2014.
• Changed the effective date on the 45L tax credit to 2022

Build 1010

• Fixes IECC2021 errors in the climate zone on the reports being incorrect. The data was processed and reported correctly just the climate zone was reported in error.
• Fixes package sent to RESNET for HVAC commissing.

Build 1009

• fixes IECC2021 errors in DHW, 301-2014 report bugs, as well as other stability issues.

Build 1008

• fixes IECC2021 Climate zone changes, RESNET Upload, and some crash bugs.

Reports:

• Updates to NGBS 2015.
• IECC 2021 UA, Performance, Label and Certificate and ERI Reports
• 2018 ERI – uses IECC 2015UA if PV is present, otherwise 2009 UA.
• Added Dehumidifier data from hourly engine to the Lights and Appliance Report.

Bugs in v16.3.3 that were fixed in v16.3.4 include:

General:

• Message improvement when closing building..
• Don’t generate a roof when a garage is completely under the floor above and there is no roof.
• Fixed a warning message for GHSP (Air Distribution).

Reports:

• Energy Star Reports the check for infiltration limits rounding error.
• Energy Code Checklist Report was not displaying.
• Fixed Export Code Report.