Tankless Gas Water Heater Sizes

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 gas water heater sizes.

Gallons per minute gpm is the key when it comes to sizing tankless water heaters. 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. Measure your cold water temperature.

Choose the right tankless electric water heater for you. 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. 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.

Simply locate the appropriate water heater sizes on ecomfort using your information. Determine the mounting space. 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. Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise.

You ll need to be able to heat at least 5 2 gallons of water. Looking to purchase a new tankless water heater but having trouble figuring out what size or model you need. Tankless water heaters are much smaller than units with a storage tank allowing them to be wall mounted. 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.

Determine your water flow rates. You ll need to raise the incoming water temperature from 40 degrees to 105. 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.