To calculate how many GPM (gallons per minute) you need your tankless water heater to accommodate, you can add the GPM usages of the worst-case scenario for how many appliances you will be using at one time. Bathroom Faucets use 1 GPM, Bathtubs 4-10 GPM, Showers 2 GPM, Kitchen Sinks 1.5 GPM, Dishwashers 1.5 GPM, and Washing Machines 4 GPM.
So, if your worst-case scenario would be two showers and a washing machine operating at the same time, you would need your tankless heater to give 2 + 2 + 4 or 8 GPM.
Tankless water heaters including Takagi Tankless Water Heaters can be found at www.supplyhouse.com
So, if your worst-case scenario would be two showers and a washing machine operating at the same time, you would need your tankless heater to give 2 + 2 + 4 or 8 GPM.
Tankless water heaters including Takagi Tankless Water Heaters can be found at www.supplyhouse.com
