Energy Rating Index Performance Path - resnet.us

1 Energy Rating Index Performance Path CASE STUDIES: Incorporating the HERS Index into an Energy code The Energy Rating Index (ERI) Performance path gives builders massachusetts STRETCH Energy code . yet another option for complying with the International Energy HERS Rating Option Conservation code (IECC). In addition to the prescriptive and In 2009, through the urging of the Department of Energy Performance paths of previous versions of the IECC, builders Resources and various local jurisdictions, massachusetts now have the option of meeting a target ERI score through a adopted the HERS Performance path as a code compliance wide range of Performance options to demonstrate compliance.

2 Option under its Stretch Energy The stretch code is The ERI Performance path allows a state or jurisdiction included in the massachusetts code as Appendix 115AA3 and adopting the IECC to specify which qualifying Energy Rating although it is based on the 2009 IECC, it requires approximately Index method it will use. RESNET's Home Energy Rating System 20% greater building Energy (HERS) Index , based on ANSI RESNET Standard 301-2014, is The stretch code requires new residential buildings 3-stories or the existing compliant ERI method and is nationally recognized less, including multi-family units, to meet an Energy Performance for inspecting and calculating a home's Energy Performance .

3 To standard using the HERS Index based on house size: date, over million homes have been rated in the under the RESNET standards and in 2013, half of all new homes were Homes 3,000 ft2 or larger rated and issued a HERS Index Score. HERS Index of less than or equal to 65. Nationwide, seven states have incorporated a HERS Index Homes smaller than 3,000 ft2. Score option into their residential building Energy codes thus HERS Index of less than or equal to 70. far: Arkansas, Colorado, Idaho, Kansas, massachusetts , Existing home alterations, renovations and repairs that choose New York and New The HERS programs in these to use the Performance option must achieve the following HERS.

4 States and jurisdictions serve as examples of the successful Rating requirements: implementation of an ERI Performance requirement. For Existing homes 2,000 ft2 or larger instance, massachusetts integrated the HERS Index into their HERS Index of less than or equal to 80. Stretch Energy code , or above code residential program. Since the stretch code was enacted, 142 jurisdictions throughout Existing homes less than 2,000 ft2. massachusetts have adopted the code , resulting in the Rating of HERS Index of less than or equal to 85. over 7,000 homes using the HERS Index . New Mexico also adopted the HERS Index Stretch code Adoption, by Community statewide as a compliance option to the 2009 IECC and several jurisdictions are AMESBURY.

5 WEST NEWBURY. WILLIAMSTOWN NORTH NEWBURYPORT. NORTHFIELD. now requiring new residential construction ADAMS ROWE WINCHENDON. BERNARDSTON TYNGSBOROUGH. WARWICK ASHBURNHAM ASHBY LOWELL. TEWKSBURY. CHELMSFORD. GREENFIELD TOWNSEND ANDOVER HAMILTON. ATHOL. to receive a HERS Rating . The City of Santa LANESBOROUGH. BUCKLAND. CONWAY. GILL. MONTAGUE. GARDNER LUNENBURG. WESTFORD. CARLISLE TOPSFIELD. GLOUCESTER. WENHAM. WENDELL PETERSHAM SHIRLEY. Fe, for example, requires HERS ratings for DALTON ASHFIELD AYER MANCHESTER. SALEM. PITTSFIELD SUNDERLAND BEDFORD. DEERFIELD WESTMINSTER LEOMINSTER CONCORD BEVERLY WINCHESTER. MELROSE.

6 LEVERETT WOBURN LEXINGTON. WILLIAMSBURG NEW LANCASTER SWAMPSCOTT MEDFORD REVERE. CHESTERFIELD ACTON. all residential construction as part of the LENOX SALEM BARRE HARVARD LINCOLNARLINGTON. GOSHEN PELHAM BELMONT EVERETT. BERLIN MAYNARD. MIDDLEFIELD SHUTESBURY WATERTOWN CAMBRIDGE. WHATELY SUDBURY. RICHMOND WALTHAM SOMERVILLE. HATFIELD. Santa Fe Residential Green Building code . AMHERST MARLBOROUGH WAYLAND WINTHROP. FRAMINGHAM NEWTON BROOKLINE. STOCKBRIDGE. HUNTINGTON BELCHERTOWN ASHLAND WELLESLEY. BOSTON. To date, approximately 900 homes have BECKET WORCESTER SCITUATE NATICK QUINCY. NORTHAMPTON UPTON. DEDHAM. GRANBY WESTWOOD STOUGHTON MILTON.

7 EASTHAMPTON AUBURN MILLBURY HANOVER. PALMER. SUTTON SHERBORN. been built under this requirement. GREAT BARRINGTON HOLYOKE MARSHFIELD. HOLLISTON. MEDWAY ROCKLAND. SPRINGFIELD HOLLAND HOPKINTON. MENDON. HANSON PEMBROKE. LONGMEADOW MILLVILLE PROVINCETOWN. MONSON DUDLEY EASTON. BLACKSTONE KINGSTON. The HERS programs in both massachusetts TRURO. BRIDGEWATER HALIFAX. PLYMPTON. WELLFLEET. LAKEVILLE. and the City of Santa Fe are excellent One hundred forty-six (146) municipalities have models for other states and jurisdictions adopted the new Board of Building Regulations ACUSHNET. and Standards (BBRS) Stretch code , to follow when adopting the HERS Index as MASHPEE.

8 As of October 28, 2014. a method to comply with an Energy code . TISBURY. Each program is highlighted below. WEST TISBURY. DOER, 11-7-14, jpfister RESNET. Energy ratings Index Performance Path The stretch code has been widely accepted throughout massachusetts . Jurisdictions may choose to enforce the base code or adopt the stretch code as the mandatory Energy City of Newton code . To date, 142 jurisdictions have adopted the stretch code , First Among Many resulting in the Rating of over 7,000 homes using the HERS The city of Newton was the first jurisdiction in massachusetts Index . The average score of all of the homes is currently 59.

9 To adopt the HERS stretch code as a part of its Energy code . Utilities are also encouraging the adoption of the stretch Leading by example, the city code . Initially, the Department of Energy Resources provided has been highly successful in full support, including training and education, for the HERS incorporating the code ; to date, program. However, due to the success and widespread adoption over 230 homes have been HERS. of the stretch code , utilities are now leading training programs rated under the stretch code . and providing education to building officials and decision Newton's HERS stretch makers throughout the state.

10 code is mandatory and was shepherded in by a building THE CITY OF SANTA FE RESIDENTIAL GREEN commissioner who emphasized the importance of such BUILDING code HERS Rating Requirements a program. As such, there were very few issues with its The City of Santa Fe has taken similar strides in increasing inception and implementation. Energy efficiency by incorporating the HERS Index Score into According to a local building official, the success of the Santa Fe Residential Green Building code . The program Newton's stretch code can be attributed to the decision began in 2006 when Santa Fe mandated that all new residential to adopt the code in its entirety at the very start of the construction receive a HERS Rating .