Other sizing notes gas tankless water heaters are able to produce a larger temperature rise per gpm than electric models.
Tankless water heater 12 gpm.
Since tankless water heaters supply endless hot water you don t have to worry about capacity but instead think in terms of water flow rate.
Tankless water heater efficiency is determined by the water flow rates inside your home.
For a family requiring 80 gallons of hot water per day that means the tankless system must be able to operate at 2 67 gallons per minute.
Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home.
The 199 900 btu natural gas tankless water heater is designed to supply continuous hot water for up to 3 bathrooms at the same time.
Simply locate the appropriate water heater sizes on ecomfort using your information.
The rheem eco200xln3 1 outdoor natural gas tankless water the rheem eco200xln3 1 outdoor natural gas tankless water heater can provide up to 9 5 gpm at a 35 temperature rise.
Your water heater should be able to supply enough hot water to your home that it can meet daily demand levels within 30 minutes.
A sink may run.
The lowest price you can get for the highest gpm is easily the takagi t h3 dv n that will give you a whopping 10 gpm.
Tankless water heaters are intended to heat potable drinking water only and the inlet water to a tankless unit should not be pre heated.
Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise.