Tankless Water Heater Gas Sizes

Sizing tankless or demand type water heaters.

Tankless water heater gas sizes.

Tankless water heaters are much smaller than units with a storage tank allowing them to be wall mounted. Since i live in boston i should be looking at a gas tankless water heater since they work best in cold climates. I wrote a really detailed article reviewing the best gas tankless water heaters for different sized households that you should read by clicking here. What size gas line does a rinnai tankless water heater require.

Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise. Most demand water heaters are rated for a variety of inlet temperatures. Looking to purchase a new tankless water heater but having trouble figuring out what size or model you need. Use our handy calculator to determine your needed flow rate and temperature rise then find models that match your needs.

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. Electric units have measurements in the 10 inch high to 7 inch wide range while gas fired. Therefore to size a demand water heater you need to determine the flow rate and the temperature rise you ll need for its application whole house or a remote application such as just a. 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.

Gas tankless water heaters are able to produce a larger temperature rise per gpm than electric models. Tankless or demand type water heaters are rated by the maximum temperature rise possible at a given flow rate. Let s continue our example with a popular product the bosch 1600p ng 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.

So i need to know what size tankless water heater is best for a family of 4. Simply locate the appropriate water heater sizes on ecomfort using your information. 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.