Which of the following objectives contributes to cost-effectiveness in hot water systems design?

A durable installation is a key objective in designing cost-effective hot water systems. When systems are designed with durability in mind, they tend to require fewer repairs and replacements over their operational lifespan. This not only minimizes the frequency and costs associated with maintenance and downtime but also ensures a reliable and consistent supply of hot water for users.

Moreover, durable materials and components can withstand the rigors of heating cycles, corrosion, and other environmental factors, translating to lower lifecycle costs. In contrast, options like frequent maintenance, complex piping systems, and expensive materials could lead to higher operational costs and complexities, ultimately detracting from the overall cost-effectiveness of the hot water system. By prioritizing durability, designers can optimize performance while keeping costs manageable over time.