A.O. Smith ECS40 | Promax 40-Gallon 4500W Short Electric Water Heater
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IMPORTANT NOTE: This product was officially discontinued by the manufacturer on September 16, 2012.
The A.O. Smith ProMax Short 40-Gallon Residential Electric Water Heater (ECS-40) is designed to offer exceptional energy savings and durability in a space-saving footprint. Perfectly suited for households of 2 to 3 people, it features advanced tank protection, high-efficiency insulation, and reliable heating elements to ensure a steady supply of hot water while minimizing energy costs.
Specifications
| Brand | A.O. Smith |
|---|---|
| MPN | ECS40 |
| Model | ECS-40 |
| Capacity | 40 Gallons (Short Configuration) |
| Fuel type | Electric (240V / 4500W / Dual Elements / 6 KW Max Input) |
| Household size | Ideal for 2-3 person households |
| Dimensions & weight | 44" Height x 20-1/2" Diameter; weighs 115 lbs |
| Performance metrics | 52-gallon first-hour delivery, 21 GPH recovery at 90°F rise, 0.92 Energy Factor, and an R-16 insulation value |
| Tank protection | Features a Coregard aluminum anode rod with a stainless steel core and Permaglas glass coating to protect the solid steel tank from rust and corrosion |
| Sediment reduction | Dynaclean PEX cross-linked polymer diffuser dip tube minimizes lime and sediment buildup to maximize hot water output |
| Valves & fittings | Includes a durable, tamper-resistant brass drain valve and a CSA-certified, ASME-rated T&P relief valve |
| Certifications | Certified to UL 174 for household electric water heaters; meets or exceeds NAECA and ASHRAE/IESNA 90.1 efficiency standards |
| Warranty | Originally backed by a 6-Year Tank and 6-Year Parts Limited Warranty |
- SKU AOSECS40
Most in-stock items ship within 1–3 business days. Once shipped, you will receive a confirmation email with tracking. Special-order items or items shipped from partner warehouses may require additional processing time. Orders ship via UPS or USPS depending on the item and destination. If you need a specific carrier, please contact us before placing your order.