What 2 ways to reduce wasted energy in a house?

To reduce wasted energy in a house, first, improve insulation in walls, attics, and basements to prevent heat loss during winter and keep cool air inside during summer. Second, invest in energy-efficient appliances and lighting, such as LED bulbs and ENERGY STAR-rated devices, which consume less electricity and operate more effectively. Additionally, implementing smart thermostats can optimize heating and cooling schedules, further minimizing energy waste.