Integrating irrigation systems with HVAC controls optimizes water usage by leveraging real-time weather data, soil moisture levels, and water availability to make data-driven decisions about irrigation. This approach ensures that irrigation occurs only when necessary, reducing water waste and overwatering. For example, if the HVAC system detects high humidity or rainfall, it can adjust the irrigation schedule to minimize water usage. This approach can lead to significant water savings, especially in regions with water scarcity or strict water regulations.