Home Energy Management Rheem Unveils First Tankless Water Heater Sizing Software

Rheem Unveils First Tankless Water Heater Sizing Software


MONTGOMERY, ALABAMA—Rheem Water Heating recently became the first industry manufacturer to offer computer software specifically intended for sizing tankless water heaters for residential and commercial installations. Based on the widely used CertiSpec software for Rheem-Ruud commercial water heaters, the new EZ-Spec tankless software application is now available for download at www.rheemtankless.com in the “Products” menu.

Simple to use, the new EZ-Spec offers drop-down menus and easy-to-understand fields. The user selects a specific application (single-family home, townhome/apartment; restaurant, school, health club, laundromat, hotel, etc.) from a drop-down menu and then enters relevant sizing data, fuel type, number of hot-water fixtures, input and output water temperatures, and flow rates. To ensure accuracy, the program incorporates the specific flow rates for an extensive array of residential and commercial hot-water appliances.

With user-supplied input, the program will indicate the optimal Rheem tankless solution for a given application in a few seconds, including suggested accessories to facilitate the installation. Installers can also generate a summary report, suitable for print or e-mail. The report also includes the project name and customer contact information.

“The EZ-Spec tankless sizing software incorporates 100 years of water heater-sizing experience at Rheem and Ruud, covering a wide variety of applications,” says Shaun Thomas, a Rheem Water Heating engineer who headed the project. “Ease of use, speed and accuracy were our top goals in developing the tankless sizing application, but the program goes beyond electronic numbers-crunching. Our calculations are supported and enhanced by our accumulated knowledge of real-world applications.”

EZ-Spec requires the Microsoft Windows XP operating system.