ProLine Master® 40-Gallon Short Smart Electric Water Heater with Leak Detection & Protection

Model HESF-40
Capacity (Gallons)
Height Classification
  • Delivers 64-gallon first hour rating
  • Leak detection sensor sounds an audible alarm when water is detected
  • Automatic shut-off valve closes valve on incoming cold water inlet when leak is detected to reduce property damage
Product Details
  • Delivers 64-gallon first hour rating
  • Leak detection sensor sounds an audible alarm when water is detected
  • Automatic shut-off valve closes valve on incoming cold water inlet when leak is detected to reduce property damage
  • iCOMM™ Smart Connectivity allows you to control & monitor your water heater remotely via the free A. O. Smith app
  • Long-lasting dual 5500 watt stainless steel elements for fast hot water recovery & reliable operation
  • 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
  • 8-year limited tank and parts warranty

  • Get smarter hot water from A. O. Smith. Our ProLine® Master Smart electric water heaters are designed with iCOMM™ Wi-Fi technology greater control, leak detection and protection to provide homeowners with peace of mind. With a 55-gallon (nominal) tank delivering 5,500 watts, the HESF-40 delivers a first hour rating of 64 gallons at an 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 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 10-year limited tank warranty. A. O. Smith’s ProLine® water heaters are residential products built to commercial-grade standard and are only available for purchase through professional wholesalers and contractors.

Specifications
Tech Specs
Nominal Gallon Capacity
40 Gallons
Rated Storage Volume
37 Gallons
UEF
0.92
Power Source
ELECTRIC
Limited Tank Warranty
8 Years
Limited Parts Warranty
8 Years
Water Connection Location
TOP
Water Connection Size
0.75"
First Hour Rating
64 Gallons
ASME Certified
No
Blanket Included
No
Destination Country
US
Digital Display
true
Installation Type
INDOOR
Max Wattage
5,500
Number of Elements
2
Shipping Height 
53.5
Shipping Length 
23.69
Shipping Width 
21.5
Side Loop
No
Voltage
240
Dimension & Venting
Type
Water Heater
Height
49.75"
Diameter
20.5 in."
Shipping Weight
95lbs