A broad coalition of environmental, health, labor, and building experts including SPUR urges the California Air Resources Board to strengthen its proposed Zero-Emission Space and Water Heater Standard, warning that the current draft falls short of California’s climate, air quality, equity, and affordability goals. The letter calls for earlier and stricter limits on sales of polluting equipment aligned with the state’s Scoping Plan, more accurate treatment of equipment size and emissions, limits on credit multipliers, and stronger penalties for noncompliance. It also emphasizes the need for better data, streamlined permitting, workforce and consumer support, and targeted assistance for low-income households to ensure a faster, fairer transition to clean heating.