Water Heater Electric Tank
A.O. Smith ProLine Master Standard Electric
A.O. Smith ProLine Master standard electric residential tank water heater with dual 4,500-watt elements and an 8-year limited tank and parts warranty. Available in 40 and 55-gallon capacities.
Power Source
ELECTRIC
Voltage
240V
Max Wattage
4,500 W
Elements
2
Warranty — Tank
8 yr
Warranty — Parts
8 yr
Model Comparison
2 models
| Specification | 40 gal | 55 gal |
|---|---|---|
| Model | HNS-40 110 | HNT-55 100 |
| UEF | 0.92 | 0.93 |
| First Hour Rating | 55 gal | 72 gal |
| Height | 49.75" | 56.5" |
| Diameter | 20.5" | 24" |
| Height to T&P | 40.75" | 48.5" |
| Shipping Weight | 98 lbs | 180 lbs |
| Shipping Height | 53.63" | 60.63" |
| Shipping Length | 23.69" | 28.25" |
| Shipping Width | 21.5" | 25.13" |
Shared Specifications
All models| Power Source | ELECTRIC |
| Voltage | 240V |
| Max Wattage | 4,500 W |
| Elements | 2 |
| Warranty — Tank | 8 yr |
| Warranty — Parts | 8 yr |
| Connection Location | TOP |
| Water Connection | 3/4 in |
| Installation | INDOOR |
| Application | RESIDENTIAL |
| ASME Certified | No |
| Side Loop | No |
| T&P Relief Valve | Yes |
| Type | Water Heater |