The ongoing heat wave is impacting renters and homeowners in Los Angeles, especially those living in older or poorly insulated homes. Struggling AC systems can lead to increased energy costs, discomfort, and potential health risks for vulnerable populations, such as the elderly and those with pre-existing conditions. Additionally, the inefficiency of cooling systems may prompt unnecessary service calls, further adding to expenses. Residents are advised to take measures to mitigate heat exposure and improve cooling efficiency.