What Size Natural Gas Tankless Water Heater Do I Need

How big of a tankless water heater do i need.

What size natural gas tankless water heater do i need.

Simply locate the appropriate water heater sizes on ecomfort using your information. Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise. Gallons per minute gpm is the key when it comes to sizing tankless water heaters. What size tankless water heater do i need for my home.

However most tankless water heaters have a btu capacity ranging from 140 000 to 200 000 or more which makes a tankless water heater one of the largest single appliances on a typical gas system. However the model and the product brand have a role to play as regards the lifespan but typically gas fired tankless heaters tend to last for over twenty years while electric water heaters have a 7 10 year lifespan. Once you have your total flow rate and the required temperature rise you can find the right size tankless water heater for your home. When it comes to tankless water heaters size matters if you install a unit that s too small you won t have enough hot water to meet demand.

So you ll need a tankless water heater that can produce at least a 60 degree rise in temperature at 5 2 gallons per minute. Gas tankless water heaters tend to have longer lifespans than the electric water heater. First things first there is natural gas and electricity. The best gas option in this case would probably be rinnai v series.

You ll need a tankless water heater that can provide a temperature rise of 50 f for about 6 gallons of water per minute. Electric units have measurements in the 10 inch high to 7 inch wide range while gas fired. Tankless water heaters are much smaller than units with a storage tank allowing them to be wall mounted. You ll need to be able to heat at least 5 2 gallons of water.

Since tankless water heaters supply endless hot water you don t have to worry about capacity but instead think in terms of water flow rate. One option would be the rheem rtgh 95dvln 9 5 gpm indoor direct vent tankless natural gas water heater. Tankless water heaters can be a great solution to provide hot water. You ll need to raise the incoming water temperature from 40 degrees to 105.

The answer is simple. Understanding natural gas vs. Even though this depends on where you live these are some of the cheapest fuel options that you can choose for your tankless water heater. Like a hot water tank for 5 people will require at least a 60 gallon tank.