What issue arises from insufficient insulation in a building?

Higher energy costs arise from insufficient insulation in a building because inadequate insulation allows heat to escape during the winter and enter during the summer. This results in increased workloads for heating and cooling systems, which must operate longer and more frequently to maintain comfortable indoor temperatures. As these systems run more, energy consumption escalates, leading to higher utility bills. Additionally, homes with poor insulation may be less energy-efficient, making them dependent on these systems for temperature control and thereby contributing to further energy cost increases over time. Insulation serves as a barrier, maintaining the desired temperature and minimizing the need for excessive heating and cooling, ultimately reducing energy expenditure.