Where the Bradford White SLE2120T6-1 fits
The SLE2120T6-1 is the largest model in Bradford White’s current Large Volume Light-Service commercial electric family. Although its model number contains 120, the current specification lists 119 U.S. gallons of rated nominal capacity. Its wider tank and 1-inch water connections are key replacement details.
This model can provide a larger stored reserve for a compatible installation, but its heating input is the same as the smaller members of the family. A large initial draw and a long period of continuing demand are different sizing problems. WHE reviews both the peak draw and the time available for recovery, rather than assuming the largest tank will solve every hot-water shortage.
Current model listing and electrical specification
The current manufacturer family page lists SLE2120T6-1, while specification sheet 1415-0526 uses the base designation SLE2120T6. This guide follows that current listing and its corresponding model row. The difference in how the suffix is displayed is not evidence of a separate generation or a different voltage. Confirm the complete model and rating plate of the unit supplied.
The sheet specifies 277V, single-phase operation only, with two 6,100W elements operating simultaneously for 12.2 kW total input. A capacity match alone does not establish electrical compatibility. The combined LE/SLE installation manual includes several wiring arrangements for different products; those examples do not establish an alternative configuration for this exact SLE model. A proposed conversion needs explicit manufacturer documentation for the supplied equipment.
Capacity, recovery and efficiency information
The current row lists 119 U.S. gallons rated nominal capacity and 50 U.S. gallons per hour recovery at a 100°F rise. At a 90°F rise, the same sheet’s 12,200W recovery table lists 56 GPH. These figures describe reheating at different temperature rises. They are not gallons stored at once, a first-hour rating or a promise of continuous fixture output.
The sheet does not publish a model-specific UEF, residential first-hour rating or separate DOE rated-storage figure for this family. WHE does not fill those gaps using numbers from the residential RE series. For a useful comparison, match the input, supply, demand pattern and temperature-rise basis, then assess the storage reserve needed between periods of use.
Dimensions, connections and installation access
- A — floor to top of heater: 63 inches.
- B — jacket diameter: 28 inches.
- C — floor to water connections: 64 13/16 inches.
- D — water-connection center spacing: 8 inches.
- E — floor to T&P connection: 64 9/16 inches.
- G — water connections: 1-inch NPT.
- Approximate shipping weight: 305 pounds.
The 28-inch body and approximately 305-pound shipping weight deserve early attention in a replacement plan. Shipping weight is not the filled operating weight. WHE checks the delivery route, doorway, supporting location and service space before ordering. The larger water connections also need an installation-specific piping review; the family page’s general 3/4-inch feature list does not describe this model’s 1-inch connections.
The installation plan includes more than the bare dimensions: pan and drain routing, overhead fittings, electrical access and space to reach the element covers, drain and anode. A replacement that fits through the door can still be awkward to service. Send both the full installation photo and the old rating plate so those details can be reviewed together.
Compare the other large-volume models
The SLE280T6-1 has 80 gallons rated nominal capacity, a 24-inch jacket and a 60-inch heater height. The SLE265T6-1 has 65 gallons, a 22-inch jacket and the same 60-inch height. Both smaller models use 3/4-inch water connections. The 119-gallon model has a 28-inch jacket, 63-inch heater height and 1-inch connections, while retaining the same 50 GPH recovery at a 100°F rise.
The smaller and larger siblings therefore change stored reserve and fit more than published heating power. WHE asks whether the demand is a short concentrated draw or a sustained load. That distinction helps avoid selecting more tank volume when the underlying concern is recovery, a failed component or a plumbing problem.
Equipment features and ongoing care
Bradford White lists INCOLOY immersion elements, foam insulation, dielectric waterways with heat traps, a protective anode and a top-mounted T&P relief valve. These features do not remove the need for maintenance. Follow the supplied instructions for inspection and sediment care, and use the full model and serial number when identifying service parts. A family photograph cannot establish an optional accessory or the precise layout of every capacity.
This family is intended for an indoor location. WHE reviews water connections, leak management, relief discharge, the supporting location and thermal-expansion provisions where required by the installation. Electrical supply and protection are checked for the actual nameplate. Service procedures and internal electrical work belong with qualified professionals following the manufacturer’s instructions.
Warranty and estimate scope
The specified six-year models carry six-year limited tank coverage and one-year limited component-parts coverage. The applicable commercial certificate excludes various replacement and repair costs, including removal and installation, subject to its terms and applicable law. Keep the original installation records, complete equipment identification and supplied warranty; the manufacturer determines claim eligibility.
An installation estimate considers equipment availability, removal access, the plumbing changes, supporting location and any electrical work needed. A manufacturer warranty is separate from the scope and coverage of the installation service. We confirm the proposed work and equipment before discussing a final installation date.
Manufacturer references and image
Sources checked October 17, 2026: Large Volume Light-Service Upright Electric family, 1415-0526 specification sheet (May 2026), 238-54649-00F installation manual (August 2026), and 238-36612-00AB commercial warranty (December 2025). The official manufacturer image is representative of the family; proportions and connections vary by model.
Discuss a replacement with Water Heating Experts
WHE is family owned and master plumber owned, serving Palm Beach Gardens, Jupiter and nearby Palm Beach County communities under Florida license CFC1426133. Review our Bradford White installation page, electric water heater service and model catalog. For a home replacing an older large electric tank, we can also compare heat-pump alternatives after checking the site.
Call 561-602-9062 or request a free installation estimate. Include your current model, property type, installation photos and hot-water concerns. Booking starts the estimate process; availability and scheduling are confirmed afterward.
Bradford White SLE2120T6-1 FAQs
Is SLE2120T6-1 rated for 120 gallons?
The current 1415-0526 specification gives 119 U.S. gallons as its rated nominal capacity, despite 120 appearing in the model number. This guide uses the published 119-gallon value.
Does it use the same water connections as the 65- and 80-gallon models?
No. The current model row and general note specify 1-inch NPT water connections for SLE2120T6. The 65- and 80-gallon siblings use 3/4-inch NPT. The exact model row takes precedence over a general family description.
Does this model heat both elements at once?
Yes. The current SLE sheet specifies two 6,100W elements operating simultaneously for 12.2 kW total input at 277V, single phase. This differs from a typical non-simultaneous arrangement. The supplied rating plate and approved instructions must match the proposed installation.
Is this a heat-pump water heater?
No. It heats stored water using electric resistance elements. A heat-pump alternative requires a separate review of the equipment, airflow, condensate drainage, electrical supply and available space.
What warranty applies to this six-year model?
The current family specification lists six-year limited tank coverage and one-year limited component-parts coverage. The commercial certificate sets the conditions and exclusions; removal, installation and related replacement or repair costs are excluded, subject to applicable law. Keep the supplied certificate and installation records.