A.O. Smith A. O. Smith Signature 500 Series 40-Gallon Tall Icomm Smart Connectivity 5500-watt Double Element Electric Water Heater - Item #3806366 | Model #EE12-40H55DVF

• iCOMM® Smart Connectivity lets you use your smartphone to receive notifications and control your smart water heater.

• Leak Watch® smart technology immediately alerts you of a leak for your peace of mind

• Leak Shield® shut-off valve automatically shuts off water supply when a leak is detected (accessory included)

• Tank Guard® gives you advanced tank protection that extends the life of your electric water heater

• An electronic user interface on the hot water heater lets you easily set temperature, operating mode and child safety lock feature

• Premium 5500 Watt Stainless Steel Heating Elements are more efficient and longer lasting than conventional elements, with higher recovery

• Electronic thermostat provides operational reliability and ease of use

• Built in dry fire protection will not allow the water heater to be turned on unless the tank is full of water, eliminating accidentally burning out the upper element

Specifications

What our Experts Think

• Smart water heater with remote monitoring: Built-in iCOMM™ Smart Connectivity allows you to monitor performance, receive alerts, and manage settings directly from your smartphone for added convenience and control.

• Powerful dual-element heating: Equipped with 5500-watt stainless steel double heating elements, this electric water heater delivers faster recovery and reliable hot water for households of up to 3 people.

• Advanced leak protection system: Features Leak Watch® detection and Leak Shield® automatic shut-off technology that alerts you to leaks and can stop the water supply to help prevent costly water damage.

• Built for long-term durability: Tank Guard® advanced tank protection and a self-cleaning dip tube help reduce sediment buildup and extend the life of the tank for consistent performance.

• Energy-efficient performance: With a 0.93 Uniform Energy Factor (UEF), the system helps reduce electricity consumption compared to many standard electric water heaters.

• Easy digital control panel: An electronic user interface with LCD display lets you quickly adjust temperature, select operating modes, and activate safety features like a child lock.

• Enhanced safety and reliability: Built-in dry-fire protection prevents the heater from activating unless the tank is full, protecting the heating elements from damage.

• Long warranty coverage: Backed by a 12-year limited tank and parts warranty, providing strong long-term reliability and peace of mind.

Q&A

Q: What size household is this 40-gallon water heater suitable for?
A: The 40-gallon capacity is typically ideal for households of up to 3 people, providing reliable hot water for showers, laundry, and daily use.

Q: What is iCOMM™ Smart Connectivity?
A: iCOMM™ technology allows you to monitor and manage your water heater through a smartphone, receive alerts, and adjust settings for better convenience and control.

Q: Does this water heater include leak protection?
A: Yes. It features Leak Watch® detection and a Leak Shield® automatic shut-off valve that helps detect leaks and stop the water supply to prevent potential damage.

Q: How powerful are the heating elements?
A: This model uses dual 5500-watt stainless steel heating elements, providing faster recovery and efficient hot water performance compared with standard elements.

Q: Is this electric water heater energy efficient?
A: Yes. It has a Uniform Energy Factor (UEF) of about 0.93, helping reduce standby heat loss and energy consumption.

Q: What safety features are included?
A: The system includes dry-fire protection, an electronic thermostat, and a temperature & pressure relief valve for reliable and safe operation.

Q: How long is the warranty for this model?
A: The Signature 500 Series water heater comes with a 12-year limited warranty on the tank and parts, offering long-term peace of mind.

Q: What are the installation requirements?
A: This tall electric water heater operates on 240 volts with top water connections and is designed for indoor residential installation

Maintenance Tips

• Flush the tank annually: Drain and flush the tank every 6–12 months to remove sediment buildup that can reduce heating efficiency and damage elements.

• Inspect the anode rod: Check the sacrificial anode rod yearly and replace it if heavily corroded to prevent tank rust and extend heater life.

• Monitor for leaks: Regularly inspect fittings, valves, and the tank base. Use the built-in Leak Watch® alerts and iCOMM™ notifications to catch leaks early.

• Check thermostat settings: Keep the temperature between 120°F–140°F for efficient heating and reduced energy costs.

• Inspect electrical components: Periodically check wiring and heating elements for wear or corrosion to maintain consistent heating performance.

• Keep area clean and ventilated: Ensure the heater area remains dry, clean, and unobstructed for safe operation and easy servicing.

• Always fill the tank before powering on: Never restore power unless the tank is completely full to prevent dry-firing and element damage.