In terms of energy efficiency, what is a common problem with older homes?

In older homes, a prevalent issue related to energy efficiency is the higher rates of air leakage. Over time, the materials and construction techniques used in homes can degrade, leading to cracks, gaps, and openings in the building envelope. This increased air leakage allows conditioned air to escape, disrupting the home’s thermal envelope and forcing heating and cooling systems to work harder to maintain desired indoor temperatures. As a result, more energy is consumed, leading to higher utility bills and less overall comfort in the home.

While insufficient insulation, outdated HVAC systems, and low-quality building materials can also contribute to energy inefficiencies, the specific issue of air leakage directly affects the home's ability to retain heat or cool air, making this a fundamental concern in energy efficiency assessments of older homes. Effective air sealing can greatly enhance energy performance and overall comfort, highlighting the importance of addressing this issue.