A.O. Smith Signature 500 40-Gallon Short 15500-Watt Double Element Smart Electric Water Heater with Leak Detection & Automatic Shut-Off - Item #3806365 | Model #EE12-40R55DVF

• 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

What our Experts Think

• Connected control at your fingertips: Built‑in iCOMM™ Smart Connectivity lets you monitor and adjust settings from your phone, access alerts, and manage performance without leaving your spot.

• Proactive leak protection: Leak Watch® Smart technology instantly notifies you of moisture, and the included Leak Shield® automatic shut‑off valve can stop the water supply if a leak starts—minimizing potential damage.

• Efficient and durable heating: Dual 5500 W premium stainless‑steel elements deliver fast recovery and consistent hot water, while dry‑fire protection prevents the heater from firing unless the tank is full.

• User‑friendly interface: The electronic control panel makes it easy to set water temperature, choose operating modes, and activate child‑safety features.

• Built to last: Tank Guard® advanced protection with a self‑cleaning dip tube resists corrosion and sediment build‑up, extending tank life. Backed by a 12‑year limited residential warranty for lasting peace of mind.

• Optimized for everyday homes: Ideal for households of about 3 people when sized correctly, balancing capacity, recovery, and energy use for typical daily hot water needs.

Q&A

Q: What household size is this 40‑gallon water heater suitable for?
A: Ideal for households of 2–3 people, providing consistent hot water for showers, laundry, and everyday use.

Q: How powerful are the heating elements?
A: Features two 5,500-watt elements for fast heating and reliable hot water delivery.

Q: What makes this water heater “smart”?
A: Includes leak detection and automatic shut-off, helping prevent water damage and offering peace of mind.

Q: Is it energy efficient?
A: Yes. Designed with a high Uniform Energy Factor (UEF) to reduce standby heat loss and minimize energy costs.

Q: What are the dimensions of the short design?
A: Measures approximately 49.75 inches high and 22.25 inches in diameter, ideal for tight spaces like closets or basements.

Q: What safety features are included?
A: Comes with temperature and pressure relief valve, tamper-resistant drain valve, leak detection, and automatic shut-off for secure operation.

Q: How is the tank protected from corrosion?
A: Equipped with a fused ceramic tank shield, protective anode rod, and premium heating elements for extended tank life.

Q: What are the installation requirements?
A: Requires 240-volt power, top water connections, and indoor residential installation.

Maintenance Tips

• Flush the tank annually: Drain and flush every 6–12 months to remove sediment and maintain heating efficiency.

• Inspect the anode rod: Check yearly and replace if corroded to prevent tank rust.

• Monitor heating elements and thermostat: Ensure the upper and lower 15500‑W elements function properly for consistent hot water.

• Test the T&P relief valve: Operate temperature & pressure relief valve yearly to ensure safe operation.

• Check for leaks and smart alerts: Use the built-in Leak Detection and Automatic Shut-Off and inspect connections regularly.

• Maintain a clear, dry area: Keep the space around the water heater unobstructed and ventilated for safety and maintenance.

• Fill tank before powering on: Always ensure the tank is full before restoring power to avoid dry-firing and element damage.