Tankless Water Heater Size Requirements

You may not need that big of a tankless water heater so make sure you read the whole article.

Tankless water heater size requirements.

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. Simply locate the appropriate water heater sizes on ecomfort using your information. Determine the maximum number of devices you want to run and their total flow rate. 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 best gas option in this case would probably be rinnai v series. Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home. How to determine the required size of a tankless hot water heater.

How to select the right size tankless water heater. The answer is simple. Measure your cold water temperature. Your tankless water heater will need to be able to provide a 60 deg.

The lowest price you can get for the highest gpm is easily the takagi t h3 dv n that will give you a whopping 10 gpm. Determine the mounting space. Temperature rise at 3 gpm. Gallons per minute gpm is the key when it comes to sizing tankless water heaters.

Then add up their flow rates gallons per minute.