Selecting Tankless Water Heater Size

Just follow the three simple steps below to choose the right model and size you need.

Selecting tankless water heater size.

Rheem tankless electric water heaters make it easy to enjoy instantaneous continuous hot water space saving design and significant energy cost savings. Size matters when it comes to your tankless water heater. You ll need to raise the incoming water temperature from 40 degrees to 105. In fact it is the most important part of choosing a new unit for your home.

I live in boston so my groundwater temperature is around 47 f. Determine the maximum flow rate of gallons during use. For example one person. Determine your tankless water heater size start with your incoming water temperature and in this example it s 50 f.

If you haven t yet considered what type of water heater might be best for your home learn more about selecting a new water heater. Choose the right tankless electric water heater for you. This includes considering the different types of water heaters available and determining the right size and fuel source for your home. What size tankless water heater depends on your gpm at peak hot water demand.

If you re planning on using a tankless water heater in your home there are a few specifications to consider before buying one. For example you might not be able to run more than one shower at a time without someone getting an arctic blast of cold water. For sizing combination water and space heating systems including some heat pump systems and tankless coil and indirect water heaters consult a qualified contractor. You ll need to be able to heat at least 5 2 gallons of water.

And your temperature rise which is determined by your incoming water temperature subtracted from your hot water setting. Having a water heater that is too small will result in it not being able to produce enough hot water for your household 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.