Laars Commercial Tankless Electric Water Heater Sizing Tool

 

If you know your usage temperature, incoming temperature, and flow rate, this handy sizing guide spreadsheet can help you find your power requirements and suggest a Laars Commercial Tankless Electric Water Heater model for you.

Click the map below to enlarge
Groundwater Temperature

For Canadian groundwater temperatures, please use the winter/coldest ground water temperature or something in the range of 1° to 4°C (35 to 40°F).

How cold is the water coming in? (Average Annual US Groundwater Temperatures)

The ground water temperatures displayed are averages measured throughout the year. Local variations and seasonal changes will affect the actual inlet water temperature.

°F

How hot would you like the water temperature?

°F

How much water do you anticipate using?

GPM
kW
kW

*For the kW, flow rates, and optional equipment available for each Laars Commercial Tankless Electric Water Heater model, refer to the submittal data sheets below.

Piping Diagrams

These drawings show suggested piping configurations and other devices; check with local codes and ordinances for additional requirements.

* Parallel installation of heaters evenly distributes workload and wear. Installing multiple heaters in a series puts the majority of stress and workload on the first heater in a sequence.