A.O. Smith ProMax 50-Gallon 40,000 BTU Tall Natural Gas Water Heater

The A.O. Smith ProMax Tall 50-Gallon Residential Natural Gas Water Heater is an economical yet exceptional performer perfectly sized for households of 3 to 4 people. Equipped with advanced C3 technology and a patented eco-friendly burner, it delivers a reliable supply of hot water while maintaining reduced emissions and excellent long-term durability.

• Capacity: 50 Gallons (Tall Configuration)
• Fuel Type: Natural Gas (40,000 BTU Input)
• Household Size: Ideal for 3-4 person households
• Dimensions & Weight: 60.75" Height x 20" Diameter x 20" Depth; weighs 153 lbs
• Performance Metrics: 91-gallon first-hour delivery, 41 GPH recovery at 90°F rise, 0.58 Energy Factor, and an R-8 insulation value
• Connections: 3/4" water connection, 1/2" gas connection, and accommodates 3" or 4" vent sizes
• Burner Technology: Patented "Green Choice" gas burner reduces NOx emissions by up to 33%, complying with Southern California and Texas requirements
• Ignition: Push-button Piezo ignitor allows for fast and easy one-handed spark lighting
• Tank Protection: Features a Coregard magnesium anode rod and Permaglas glass coating to protect the solid steel tank from rust
• 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 (Note: External heat trap nipples are not supplied on XCV-50/GCV-50 models)
• Warranty: Backed by a 6-Year Tank and 6-Year Parts Limited Warranty

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.