Tankless Gas Water Heater Sizes

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.

Tankless gas water heater sizes.

Looking to purchase a new tankless water heater but having trouble figuring out what size or model you need. 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. Just follow the three simple steps below to choose the right model and size you need. Choose the right tankless electric water heater for you.

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. Like a hot water tank for 5 people will require at least a 60 gallon tank. Rheem tankless electric water heaters make it easy to enjoy instantaneous continuous hot water space saving design and significant energy cost savings. 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. You ll need to be able to heat at least 5 2 gallons of water. Measure your cold water temperature. 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. Gallons per minute gpm is the key when it comes to sizing tankless water heaters. You ll need to raise the incoming water temperature from 40 degrees to 105. 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. How to determine the required size of a tankless hot water heater. Determine the mounting space.