A tool utilized to determine the appropriate capacity of an on-demand water heating system from Navien for a given application. This tool typically requires input of factors such as the number of plumbing fixtures, average groundwater temperature, and desired temperature rise to estimate the necessary flow rate and thermal output. For instance, a user would input the number of showers, sinks, and dishwashers present in a household to estimate the peak hot water demand.
Selecting the correct size ensures efficient operation, adequate hot water supply during peak demand, and avoids potential issues such as cold water sandwiches or unit overload. Historically, oversizing was a common practice, but a more precise approach minimizes energy waste and reduces upfront costs. Properly configured systems provide hot water only when needed, conserving energy and lowering utility bills.
