Tankless Water Heater Size Requirements

Measure your cold water temperature.

Tankless water heater size requirements.

Simply locate the appropriate water heater sizes on ecomfort using your information. Temperature rise at 3 gpm. A wide range of sizes and capacities of demand type water heaters are available so indeed it makes sense to look carefully at your requirements. Then add up their flow rates gallons per minute.

You may not need that big of a tankless water heater so make sure you read the whole article. Your tankless water heater will need to be able to provide a 60 deg. How to select the right size tankless water heater. 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. You ll need a tankless water heater that can provide a temperature rise of 50 f for about 6 gallons of water per minute. Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise. The answer is simple.

Remember the maximum flow rate that manufacturers mention in the description is not what you ll get at your place. The best gas option in this case would probably be rinnai v series. Determine the mounting space. How to determine the required size of a tankless hot water heater.

Determine your water flow rates.