Welcome to REM/Rate™

REM NEWS

CRITICAL:Discontinuing Archenergy.com REM/Rate™ registration service early 2026

• REM/Rate LLC no longer owns Archenergy.com and therefore, we are going to discontinue using the Archenergy.com domain early next year and switch to using RemRate.com domain. This means all versions of REM/Rate™ using Archenergy.com as their built-in registration service will no longer be able to register and update their expiration date. Please update all supported versions of REM/Rate™ to the lastest hotfix using the download page to ensure continued uninterrupted use of REM/Rate™.

Happy Holidays!

• Our office will be closed for the holidays from December 24 through January 1st with limited support. During This time, please feel free to email us at [email protected] and we will respond as soon as we can. Thank you and have a happy Holiday!

REM/Rate™ 2025 is the current released version

• The latest NREL engine using ANSI/RESNET/ICC 301-2022 standard
• CFIS input improvements
• UEF added to DHW
• Adjustments to eaves impact on insulation on buildings with a vented attic
• Documents and photos can be attached to the building file, including rater checklists, Energy Star required photos, QA reports, etc.
• Numerous internal fixes that improve stability and allow for planned enhancements within the REM/Rate™ 2025 life cycle. IECC 2024, Energy Star 3.3 and ZERH2 will use this new framework with ZERH2 near completion.

REM/Rate™ 2023 is in maintenance mode

• Only critical bug fixes and crashes will be fixed. The latest hotfix includes a fix to use RemRate.com as the registration service.

REM/Rate™ 16.3.4 is end of life

• No more bug fixes will be supplied. The latest hotfix uses the new RemRate.com registration service.

XML Export

• This feature is now a charged item in all versions of REM/Rate™. You may enable XML export by contacting [email protected]. For all cases where export to XML is enabled there will be a one time charge per unique building address.

New binding guidance from DOE and EPA

• Due to new guidance from DOE and EPA, REM/Rate™ Lite will no longer support the Energy Star Single-Family New Homes program and U.S. DOE Zero Energy Ready Homes program. For a home to be certified to these programs, the third-party verifier must be overseen by a Home Certification Organization (HCO). Because REM/ Rate™ Lite does not have the capability to track whether third-party verifiers are operating under an HCO , the ability to generate reports, labels, and certificates for these programs has been removed. Third-party verifiers working under RESNET’s HCO and REM/Rate™ may continue to use the full version of REM/Rate™ to certify homes to these programs.
• Both Energy Star and ZERH reports will be either disabled or rendered NO PRINT in REM/Rate™ Lite depending on the version. All other reports and standards will continue to be supported.
• After a conversation with EPA on Energy Star, guidance is for maintaining the current Energy Star program. As more information is obtained, we will keep you informed. At this time there is no definate information.

HotFixes

2025 Hotfix 11 December 2025

• Bug Fixes and Stability Enhancements:
• Updated product registration to use REMRate.com.

2023 Hotfix 2030 December 2025

• Bug Fixes and Stability Enhancements:
• Updated product registration to use REMRate.com.
• Fixed an issue with the RESNET registry ID.

Did you know?

The Navigation control can be used to get to the corresponding building screen by simply clicking on any of the entries. It also contains related information between screens. For example, AGWalls contain the windows and doors attached to them. Additionally, each entry not only contains the screen values but the library values. These values are automatically synced with the page value. Other Navigation features include the ability to right-click to expand, collapse, print, and save the navigation control. This gives a complete view of the building without going through screens.

REM Software

REM/Rate™ Desktop

REM/Rate™ is a desktop application that is the industry leading standard for Home Energy Rating Systems (HERS^®), Energy Star, ZERH, and IECC ratings and code compliance. REM/Rate™ provides valuable information and insights for new and existing single-family homes about energy performance to electric and gas utility companies and their program implementers. REM/Rate's™ hourly simulation engine provides the most accurate scores to rate the energy efficiency of homes to identify cost-effective improvements to secure energy-efficient mortgages. Climate data is available for cities and towns throughout North America.

REM/Rate™ Lite

REM/Rate™ Lite is intended for users who are not RESNET providers and raters. REM/Rate™ Lite has all the features and functions of REM/Rate™ except for the following, which require the user to be a RESNET provider:

• (HERS^®)
• Energy Star
• ZERH

REM/Design™

REM/Design™ has been decommissioned and regular technical support ended. It has been replaced with REM/Rate™ Lite. This ensures a single code base that implements all the code standards and bug fixes for a more consistent product.