Terms of use
Last updated October 27, 2026
By using WaterHeaterSpecs you accept these terms.
What the site provides
The site republishes certified test values from a public U.S. EPA dataset, grouped and compared. The values describe laboratory tests, not the performance of any installed heater, and they may change when listings are updated or withdrawn. Check the manufacturer’s current documentation before relying on a figure.
No advice
Nothing here is purchasing, sizing, installation, safety or financial advice. The site shows no prices and no financial incentives.
Accuracy
We clean and check the data as described on Test and data, but we cannot guarantee that every value is correct or complete. The site is provided as is.
Names and marks
Brand and product names belong to their owners and are used only to identify listed models. The site is not affiliated with or endorsed by EPA, DOE or ENERGY STAR.
Reuse
The underlying EPA data is in the public domain. The site’s own text, charts and design may be quoted with a link to the page.