A.O. Smith Signature 100 50-Gallons Short 4500-Watt Double Element Electric Water Heater - Item #816161 | Model #E6-50R45DV
A. O. Smith's Signature 100 Series 50-Gallon Short Electric Water Heater with a 6-Year Limited Warranty is designed to provide efficient and reliable hot water for households with 3 to 4 people when sized appropriately. A. O. Smith's 50-gallon model is designed to last. It features dual copper heating elements, a protective anode rod and a ceramic fused tank shield designed to reduce corrosion and provide ultimate tank protection. It also features a self-cleaning dip tube designed to reduce sediment build-up and extend the overall life of the water heater. This added protection comes with a 6-year limited warranty to give you additional peace of mind. Want to save money on your energy bills? This model operates at a 0.92 Uniform Energy Factor (UEF) which can reduce your energy consumption compared to less efficient models.
Features
-
Delivers the ideal amount of hot water for households with 3 to 4 people when sized appropriately
-
Features two 4,500-watt copper heating elements that provide a first hour delivery of 57 gallons
-
Operates at a 0.92 Uniform Energy Factor for maximum energy-efficiency and cost savings
-
Short 49.25-in H x 23-in diameter design, ideal for condensed spaces like under staircases or closet installations
-
Provides superior tank protection and extends water heater life with premium heating elements, anode rod and fused ceramic tank shield
-
Reduces heat loss with non-CFC polyurethane foam insulation and factory-installed heat trap nipples for maximum efficiency and energy savings
-
Features easy temperature control with adjustable thermostat you can set higher or lower for dishwashers and laundry machines
-
Factory-installed temperature and pressure relief valve and tamper-proof drain valve ensures safe operation
Specifications
Diameter (Inches) |
23.0 |
Nominal Capacity (Gallons) |
50.0 |
Family Size |
4.0 |
Rated Storage Capacity |
46-Gallon |
Height (Inches) |
49.25 |
Water Connection Size |
3/4-in |
Insulation Thickness (Inches) |
2.5 |
Weight (lbs.) |
124.0 |
What our Experts Think
-
Ample hot water for families: Designed for homes with 3–4 people, the 50‑gallon tank delivers a first‑hour hot water output of about 57 gallons, supporting daily showers, laundry, and dishwashing needs.
-
Reliable heating performance: Dual 4500‑watt copper heating elements and a 0.92 Uniform Energy Factor (UEF) help heat water efficiently while lowering energy costs vs. older electric models.
-
Space‑saving short design: With a compact 49.25″ height and 23″ diameter, this short tank fits in tight indoor spaces like utility closets or under stairwells.
-
Durable construction: Premium heating elements, a protective anode rod, and a ceramic‑fused tank shield resist corrosion and extend tank life.
-
Energy‑saving insulation: Non‑CFC polyurethane foam insulation and heat‑trap nipples reduce standby heat loss, improving overall efficiency.
-
Easy control & safe operation: Adjustable thermostat lets you tailor output for appliances and showers, while factory‑installed temperature and pressure relief and tamper‑proof drain valve enhance safety.
Q&A
Q: What household size is this water heater suitable for?
A: Ideal for households of 3–4 people, providing ample hot water for showers, laundry, and daily use.
Q: How powerful are the heating elements?
A: Features two 4,500‑watt copper heating elements for efficient heating and a first-hour delivery of approximately 66 gallons of hot water.
Q: Is it energy efficient?
A: Yes. Operates at a Uniform Energy Factor (UEF) of 0.92, reducing standby heat loss and lowering energy costs.
Q: What are the dimensions of the short design?
A: Measures about 49.75 inches high and 22.25 inches in diameter, suitable for tight spaces like closets or basements.
Q: What safety features are included?
A: Includes a temperature and pressure relief valve, adjustable thermostat, and tamper-resistant drain valve for safe operation.
Q: How is the tank protected from corrosion?
A: Equipped with a fused ceramic tank shield, protective anode rod, and premium heating elements to extend tank life.
Q: What are the installation requirements?
A: Requires 240-volt power, top water connections, and is designed for indoor residential installation.
Maintenance Tips
-
Flush the tank annually: Drain and flush every 6–12 months to remove sediment that reduces heating efficiency and shortens element life.
-
Inspect the anode rod: Check the sacrificial anode rod yearly; replace if heavily corroded to prevent tank rust.
-
Check heating elements and thermostat: Inspect upper and lower 4500‑W elements and thermostats to ensure consistent hot water and safe operation.
-
Test T&P relief valve: Lift and release the temperature & pressure valve annually to verify proper function.
-
Inspect for leaks: Regularly check water connections, fittings, and the tank base for moisture, corrosion, or leaks.
-
Maintain safe operating area: Keep the surrounding space clean, dry, and unobstructed for proper airflow and maintenance access.
-
Fill tank before powering on: Ensure the tank is full before restoring power to avoid dry-firing and element damage.
Damage 
Loss 
Theft 
