IECC COMPLIANCE Used by Home Energy Raters, Architects, Builders,
Contractors, and Weatherization Experts.

DOE, ENERGY STAR<sup>®</sup> and HERS Reports

OVER 1,000,000 HOMES

DOE, RESNET and HERS certified

REM Development

To support the industry, the REM team continues to refine the new hourly simulation engine options, which will support required changes in the HERS Rating industry as well as time-of-use utility costs and the increasingly complex capabilities of many types of heating and cooling equipment. The REM team also is refining plans for the expansion of REM capabilities and collaborations.

Free 14-day trial

REM/Rate™ Desktop

REM/Rate™ Software is used by organizations which conduct Home Energy Rating Systems (HERS®) Ratings. Now includes an hourly simulation engine! HERS® rates the energy efficiency of homes for identifying cost-effective improvements and providing energy-efficient mortgages. Climate data is available for cities and towns throughout North America.


Version 16.3.4 Build 1011

Use Help->About to get build number.

Build History


Build 1008

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

Build 1009

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

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 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.
Free 14-day trial

REM/Design™ Desktop

User-friendly and highly-sophisticated, REM/Design™ software calculates heating, cooling, domestic hot water, lighting and appliance loads, consumption, and costs based on a description of the home's design and construction features as well as local climate and energy cost data.

REM Software

REM/Rate™ and REM/Design™ desktop applications have been the industry standard for HERSĀ® Ratings and home energy analysis/weatherization. Both programs are also great for use within residential energy efficiency rebate programs. They provide valuable information about energy performance to electric and gas utility companies as well as their program implementers and evaluators who want to predict and assess new and existing single family homes. IECC code compliance is also supported by REM software.

The ENERGY STAR® name and mark are registered trademarks owned by the U.S. Environmental Protection Agency (EPA).
LEED® is an acronym for Leadership in Energy and Environmental Design. LEED® and its related logo, is a registered trademark owned by the U.S. Green Building Council® and is used with permission.
HERS® is an acronym for the Home Energy Rating System, a registered trademark of the Residential Energy Services Network.
RESNET® is an acronym for Residential Energy Services Network®, Copyright 2010 Home Energy Service Pro, LLC - All Rights Reserved.