Sizing a Tankless Water Heater in Phoenix, AZ


A new, tankless water heater installation has many advantages over the standard, old fashioned hot water tank. One of the most important factors, is that it provides instant hot water on demand. In order to produce a constant flow of hot water on demand, your tankless water heater must be sized properly. Before you even begin the process of tankless water heater installation, be sure to make yourself familiar with the basics involved in sizing it properly. The number of individuals occupying your household, along with the number of water fixtures is the main concern. After all, you want to have an ample supply of on demand, continuous water during peak times.


Your Tankless Water Heater in Phoenix, AZ should be able to provide you with hot water from all fixtures, during your peak hours. The gpm, or gallons per minute is simple to compute. If a home has a shower which uses 4.0 gallons per minute, a bathroom sink that uses 1.5 gallons per minute and a basement sink that uses 1.0 gallons per minute, then your total gpm would be 6.5 gpm. So you would need a heater that could give 6.5 gallons per minute of hot water during the peak hours, such as mornings.


Next, figure out your temperature rise. This is the difference between your geographic groundwater temperature and your desired hot water temperature. If your ground water is 70 F and you like showers at 120 F, your rise is 50 F. To find your groundwater temperature, simply do a search online. Once you have your flow rate and temperature rise figured out, you can now start to shop for your Tankless Water Heater in Phoenix, AZ.