The ProLine® XE electronic display model water heater maximizes savings on operating costs and delivers an exceptional 0.93 Uniform ENERGY FACTOR® making it our most efficient electric model to date. This model also features a leak detection sensor that makes an audible alarm if the heater detects a water leak. With a 40 gal (nominal) tank producing 5500 W, the EGX-40-DXRT delivers a first hour rating of 39 gal and a recovery rate of 25 gph. With an 0.93 Uniform ENERGY FACTOR®, this water heater has a leak detection sensor. It carries a 10 years limited tank warranty.