- Delivers 50-gallon first hour rating
- Dual 4,500-watt commercial-grade heating elements deliver reliable and efficient hot water
- Long-lasting lower Incoloy™ stainless steel element
- Lowboy design with top connections ideal for spaces with low height clearance
- Patented Blue Diamond® glass tank lining protects against corrosion
- DynaClean™ automatic cleaning system protects against sediment build-up
- Stainless steel CoreGard™ anode rod protects against corrosion longer than ordinary anodes
- Commercial-grade brass drain valve for durable and easy operation
- CSA Certified and ASME Rated T&P Relief Valve, Factory-Installed
- 6-year limited tank and parts warranty
The ProLine® Lowboy Electric water heater with Top Water Connections is the reliable choice when you want to maximize hot water output and energy savings. With a 38-gallon (nominal) tank and dual 4,500 watt elements, the ENL-40 delivers a first hour rating of 50 gallons at a highly efficient 0.89 Uniform Energy Factor rating. Environmentally-friendly insulation and factory-installed heat trap nipples reduce heat loss for maximum energy savings. This ProLine® water heater is designed with A. O. Smith's superior commercial-grade tank protection. Advanced tank features include stainless steel CoreGard™ anode rod, Blue Diamond® glass lining and DynaClean™ automatic sediment-cleaning system, all designed to help protect the tank from the corrosive effects of water and extend the life of the water heater. All of these features are accompanied by a 6-year limited tank warranty. A. O. Smith’s ProLine® water heaters are residential products built to commercial-grade standards and are only available for purchase through professional wholesalers and contractors.
ProLine® Electric Adjusting the Thermostat
ProLine® Electric Application and Installation
ProLine® Electric Checking and Replacing Lower Heating Element.
ProLine® Electric Checking and Replacing Upper Heating Element.
ProLine® Electric Not Enough Hot Water
ProLine® Electric Replacing the Lower Thermostat
ProLine® Electric Replacing the Upper Thermostat
ProLine® Electric Tripped ECO
ProLine® No Hot Water