Tankless Gas Water Heater Sizes

Looking to purchase a new tankless water heater but having trouble figuring out what size or model you need.

Tankless gas water heater sizes.

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. Rheem tankless electric water heaters make it easy to enjoy instantaneous continuous hot water space saving design and significant energy cost savings. You ll need to be able to heat at least 5 2 gallons of water. Measure your cold water temperature.

Like a hot water tank for 5 people will require at least a 60 gallon tank. Tankless water heaters are much smaller than units with a storage tank allowing them to be wall mounted. Determine your water flow rates. Choose the right tankless electric water heater for you.

Use our handy calculator to determine your needed flow rate and temperature rise then find models that match your needs. Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home. Just follow the three simple steps below to choose the right model and size you need. Gallons per minute gpm is the key when it comes to sizing tankless water heaters.

Determine the mounting space. 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. Rinnai tankless water heaters are designed to provide maximum performance and efficiency using either a 3 4 or 1 2 gas line as long as sufficient gas flow is available. Simply locate the appropriate water heater sizes on ecomfort using your information.

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. 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.