Tankless Gas Water Heater Sizes

Choose the right tankless electric water heater for you.

Tankless gas water heater sizes. The right size is a tankless water heater that can heat enough gallons of water to a specific temperature per minute to keep up with the demand. Looking to purchase a new tankless water heater but having trouble figuring out what size or model you need. Determine the mounting space. Rheem tankless electric water heaters make it easy to enjoy instantaneous continuous hot water space saving design and significant energy cost savings.

Measure your cold water temperature. You ll need to be able to heat at least 5 2 gallons of water. 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. Gallons per minute gpm is the key when it comes to sizing tankless water heaters.

So you ll need a tankless water heater that can produce at least a 60 degree rise in temperature at 5 2 gallons per minute. Just follow the three simple steps below to choose the right model and size you need. Rinnai super high efficiency plus 9 8 gpm indoor natural gas tankless water heater. How to determine the required size of a tankless hot water heater.

Use our handy calculator to determine your needed flow rate and temperature rise then find models that match your needs. Determine your water flow rates. If you want to upgrade your water heater size from 40 or 50 gallons storage water heater or replace it you won t necessarily need a big tankless water heater. Simply locate the appropriate water heater sizes on ecomfort using your information.

You ll need to raise the incoming water temperature from 40 degrees to 105. Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home. Tankless water heaters are much smaller than units with a storage tank allowing them to be wall mounted.