Relating to prohibiting the use of electric resistance as a primary heat source in certain residential buildings.

HB 4016 prohibits electric resistance heating as the primary heat source in new or renovated residential buildings larger than 500 square feet, affecting new construction and major renovations starting after January 1, 2026. The bill exempts units cooled with chilled water systems. It requires municipalities to establish implementing rules by December 1, 2025, and takes effect September 1, 2025, for planning purposes. This policy change directly impacts builders and homeowners planning significant construction or remodeling projects after 2025.