What size room will a 15000 BTU heat pump heat and cool?

A 15,000 BTU heat pump can typically heat and cool spaces ranging from 600 to 1,000 square feet, depending on factors such as insulation, ceiling height, and climate. In well-insulated homes, it may effectively serve the upper end of this range, while in less insulated spaces, it may be more suitable for the lower end. Always consider specific room characteristics and local conditions for optimal performance.