Why does my home have hot and cold spots?

Uneven temperatures are typically caused by poor insulation, leaky ductwork, blocked or closed vents, an improperly sized HVAC system, or a room's exposure to sun and wind. Second-floor rooms, rooms above garages, and rooms with large windows are especially prone. Check that all vents are open and unobstructed. A professional can test ductwork for leaks, check system sizing, and recommend zoning solutions to balance temperatures.