What Size Tankless Water Heater Do I Need For A 4 Bedroom House

3 4 people need a 40 50 gallon water heater.

What size tankless water heater do i need for a 4 bedroom house. Tankless water heaters are rated by the maximum temperature rise possible at a given flow rate. How to size a tankless water heater. Looks like the rinnai ruc98in from amazon is going to be best to suit my needs. 5 or more people need a 50 80 gallon water heater.

Should you stay with a traditional storage hot water tank or go with a tankless water heater. Now before you make your final decision there is one other consideration to make and it s a big one. If you re in a hurry mind checking out the start of this page. If you need the water heater to raise the water s temperature by 45 degrees fahrenheit however the flow rate falls to about 7 gpm as indicated on the manufacturer provided flow rate chart.

Simply locate the appropriate water heater sizes on ecomfort using your information. 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. To properly size a storage water heater for your home including a heat pump water heater with a tank use the water heater s first hour rating. So i need to know what size tankless water heater is best for a family of 4.

Tankless units work by using built in coils to heat water when you need it meaning you ll always have hot water on demand. This makes these types of water heaters more efficient than traditional storage tank water heaters which could end up reducing your energy bills. You just want a quick answer don t you. What size tankless water heater do i need for a 2 3 4 bathroom house.

I ve put my product recommendations there. The first hour rating is the number of gallons of hot water the heater can supply per hour starting with a tank full of hot water. In this scenario a 200 000 btu water heater would be able to heat all of the water in a house at a 6 4 gpm flow rate to 110 f and at a 5 4 gpm flow rate all the flowing water would be heated to. Sizing storage and heat pump with tank water heaters.

Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home. A tankless water heater albeit more expensive upfront will provide you with hot water no matter what. It is listed as being 9 8gpm but since my factors are not the best case scenario it drops down to 6 7 gpm. 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.