What Size Tankless Water Heater To Replace A 50 Gallon

Tankless water heaters are rated by the maximum temperature rise possible at a given flow rate.

What size tankless water heater to replace a 50 gallon. Department of energy estimates that in homes using 41 gallons or less of hot water on demand tankless units can conserve between 24 to 34 more energy than tank water heaters. How to size a tankless water heater. Installing a tankless water heater is a greater upfront investment but these units can significantly cut the cost of monthly utilities. 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 bathroom in your home.

If you have considered upgrading your tank size from 40 or 50 gallons to 66 or 80 gallons we strongly recommend a tankless hot water heater. 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. Since i live in boston i should be looking at a gas tankless water heater since they work best in cold climates.

Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home. Electric units have measurements in the 10 inch high to 7 inch wide range while gas fired. Our payback calculations are based on replacing a 50 gallon storage tank water heater with a tankless water heater then calculating how much the tankless model costs to operate and. While traditional tank water heaters are calculated by your family size a tankless water heater is calculated by the quantity and types of fixtures or appliances it will serve.

The first factor in choosing a tankless water heater is calculating the size of your hot water heater. 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. Simply locate the appropriate water heater sizes on ecomfort using your information. I wrote a really detailed article reviewing the best gas tankless water heaters for different sized households that you should read by clicking here.