Date Published: October 2012
NSP encourages energy efficiency. NSP1 allows for the use of Energy Star appliances. NSP2 and NSP3 add a requirement for meeting the Energy Star rating for new construction and substantial rehabilitation. For new construction and substantial (or gut) rehabilitation of buildings up to 3 stories, units must be certified by a Home Energy Rater as an Energy Star Qualified Home and all appliances must be Energy Star qualified. Buildings four stories or higher must meet ASHRAE 90.1-2007 plus 20 percent (Appendix G) and appliances must be Energy Star qualified.