Uses
How Does it Work?

Innovative Ruud tankless technology has changed the way we heat water.
- See how it works
- Tankless vs tank
Select your best fit

Find out which award-winning Ruud tankless model best fits your needs.
- Residential Uses
Our courteous support team is knowledgeable and ready to answer your questions.
- Find Out More



	Home Products Tankless Water Heaters EZ-Spec Sizing

Products - EZ-Spec Sizing Software for Professionals

EZ-Spec^TM tankless sizing software takes the guesswork out of choosing the right model, number of units, and accessories needed for a tankless installation. It is simple-to-use and highly accurate.

Click the icon below to try it online with nothing to download or install. (requires Internet Explorer 6 or higher).

Or, for more advanced sizing program, download EZ-Spec for Windows Click Here (requires Windows XP SP2 or higher).

Please run the "Check for Updates" after installation to get the latest water heater specifications.

Tankless links

Products

Learn

Customer Support

Uses

How Does it Work?

Select your best fit

Products - EZ-Spec Sizing Software for Professionals