Tankless Water Heater Size Requirements

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

Tankless water heater size requirements.

Determine the mounting space. The best gas option in this case would probably be rinnai v series. Simply locate the appropriate water heater sizes on ecomfort using your information. You may not need that big of a tankless water heater so make sure you read the whole article.

The answer is simple. How to determine the required size of a tankless hot water heater. Remember the maximum flow rate that manufacturers mention in the description is not what you ll get at your place. How to select the right size tankless water heater.

Determine your water flow rates. Measure your cold water temperature. Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise. Temperature rise at 3 gpm.

Tankless water heaters are much smaller than units with a storage tank allowing them to be wall mounted. 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 ll need a tankless water heater that can provide a temperature rise of 50 f for about 6 gallons of water per minute.

Your tankless water heater will need to be able to provide a 60 deg.