ENERGY STAR for Homes Update
The latest update to ENERGY STAR for Homes, Version 3.1 (ES v3.1) becomes effective for buildings permitted in Minnesota on or after April 1, 2016. ES v3.1 includes the following changes, among others, to the core energy efficiency measures used to determine the ENERGY STAR HERS Index target for each home:
- Insulation level per the 2012 IECC criteria, which includes R-5 continuous insulation on the 2x6 wood frame exterior walls
- Window U-value minimum of 0.27
- Minimum heating efficiencies of 95% AFUE for gas furnaces and 90% AFUE for gas boilers and 90% of light bulbs or fixtures ENERGY STAR certified.
Minnesota Housing Note to ES v3.1
Minnesota Housing will require all applicable projects applying for funding after April 1, 2016 to comply with ENERGY STAR for Homes 3.1 version. Projects approved for funding before this date may request a waiver from Minnesota Housing to use the 3.0 version, with the understanding that the use of this version may not result in ENERGY STAR Certification.
ENERGY STAR Qualified Window, Door, and Skylight Performance Levels
There are new prescriptive path performance levels effective as of January 1, 2016 for windows, doors, and skylights in all climate zones. Please go to the ENERGY STAR Residential Window, Doors, and Skylights web page for more information. Keep in mind that window, door, and skylight efficiency levels may be less than the prescriptive performance level if the energy model demonstrates overall energy compliance.