- Delivers 55-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
- HUD compliant, approved for mobile homes/manufactured housing
- 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® Standard Electric water heater is the reliable choice when you want to maximize hot water output and energy savings.
The ENS-40 incorporates a 40-gallon (nominal) tank and 4,500 watts to deliver a first hour rating of 55 gallons at a Uniform Energy Factor of 0.92.
Environmentally-friendly insulation and factory-installed heat trap nipples reduce heat loss for maximum energy savings.
This ProLine® water heater features A. O. Smith's advanced tank protection, including a stainless steel CoreGard™ anode rod, Blue Diamond® glass lining, and DynaClean™ automatic sediment-cleaning — designed to help protect the tank from the corrosive effects of water and extend the life of the water heater. The ENS-40 includes 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.
Electric Adjusting the Thermostat
Electric Checking and Replacing Lower Heating Element
Electric Checking and Replacing Upper Heating Element
Electric Not Enough Hot Water
Electric Replacing the Lower Thermostat
Electric Replacing the Upper Thermostat
Electric Tripped ECO
No Hot Water