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Hoshizaki DT1A-HS Steelheart 27.5-inch dual-temperature upright with the refrigerator above the freezer. Stainless steel cabinet interior, locking self-closing doors, adjustable epoxy-coated shelving and digital temperature displays. 79.5-inch overall height including 4-inch casters.

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Product overview

The Hoshizaki DT1A-HS Steelheart dual-temperature upright combines refrigerated and frozen food storage in one 27.5-inch-wide cabinet, with the refrigerator above the freezer. Its vertically stacked compartments keep both storage zones within a one-section footprint. Separate digital controls provide temperature displays in Fahrenheit or Celsius, with temperature and voltage alarms.

Stainless steel covers the cabinet interior and exterior front and sides. Solid stainless steel doors include locks, spring-assisted self-closing hinges, a stay-open position past 90 degrees and flush aluminum handles. Removable magnetic gaskets and a stepped door edge make the door seals accessible for cleaning. The top-mounted R-290 refrigeration systems use E-coated evaporators; interior LED lighting illuminates the storage compartments.

  • Two storage zones: Refrigerator above, freezer below.
  • 27.5-inch cabinet width: 79.5-inch overall height including 4-inch casters.
  • Adjustable shelf supports: Epoxy-coated shelving with 1-inch adjustment increments.

Specifications

Model DT1A-HS
Configuration One-section dual-temperature upright
Compartment arrangement Refrigerator above the freezer
Cabinet width 27.5 inches
Overall height 79.5 inches including 4-inch casters
Overall depth 35 inches including 1-inch rear channel
Refrigerator storage capacity (AHAM) 10.19 cu. ft.
Cabinet and door insulation 2-inch CFC-free foamed-in-place polyurethane
Door opening (W × H) 21.75 × 27.75 inches
Shelf size (W × D) 21.25 × 26 inches
Shelf adjustment 1-inch increments
Maximum shelf load 120 lb per shelf
Cabinet interior Stainless steel top, sides, back and floor
Doors Stainless steel exterior and interior; locks and field-reversible hinging
Standard casters 4-inch; two with brakes
Electrical supply 115V / 60Hz / single phase
Amperage 5.5 A
HACR breaker 15 A
Plug NEMA 5-15P
Cord length 10 feet
Ambient operating range 45–100°F
Refrigerant R-290
Temperature display Digital, Fahrenheit or Celsius

Food storage and loading

Allow both compartments to reach operating temperature before stocking. Cool warm or hot food before loading, wrap food or use sealed containers, and leave space between products for air circulation. Keep air inlets and outlets clear. Install each shelf securely on four support clips and do not exceed 120 lb per shelf.

Use the cabinet for food storage, not chemicals, vaccines or medical supplies. Do not climb, stand or hang on the doors or cabinet. Follow applicable food-handling requirements for each product stored.

Installation and electrical supply

Install indoors on a firm, level foundation, away from ovens, grills, high heat and corrosive environments. Maintain at least 3 inches of rear clearance. Have the installer confirm the required overhead clearance and full door swing before positioning the cabinet. Use within a 45–100°F room; the unit is not intended for installation above 6,561 feet (2,000 m).

The DT1A-HS requires its heated condensate pan to be installed before operation. Have the installer secure the supplied pan and bracket with the four supplied screws, connect the pan to its dedicated receptacle on the cabinet, replace the channel cover and route the drain hoses into the pan. Keep the hoses clear of the heater and secure the pan cord as directed in the instruction manual. Incorrect installation can cause water damage. Confirm the required room floor area against the delivered cabinet’s nameplate and applicable installation instructions.

Move the cabinet upright and do not tilt it more than 45 degrees or lift it by the top section. Lock the front casters after positioning. Connect to an independent, properly grounded outlet matching the plug and nameplate. Do not use an extension cord or adapter or remove the grounding prong. If GFCI protection is required, use a GFCI breaker rather than a GFCI receptacle.

R-290 is flammable. Keep ignition sources away, do not puncture refrigerant tubing, and do not use mechanical tools to accelerate defrosting. Keep ventilation openings clear and leave refrigeration service to qualified technicians.

Cleaning and maintenance

Unplug the cabinet and move food into another suitable refrigerator or freezer before cleaning. Check the air filter at least twice a month; wash a clogged filter with warm water and neutral cleaner. Inspect the condenser twice a year and clean as needed with a brush or vacuum, with cleaning at least once a year. Dusty or greasy conditions may require more frequent maintenance.

Wipe the exterior with a clean, soft cloth and neutral cleaner. Clean the interior and door gaskets with mild soap and warm water, not hot water, and wipe spills promptly. Remove and clean shelves regularly. Use stainless-steel-safe products on stainless surfaces; avoid steel wool, abrasives and chlorine bleach. Do not splash, spray or pour water into the cabinet. Let both compartments return to their operating temperatures before restocking.

Optional accessories

Available accessory categories include additional epoxy-coated or stainless steel shelves, pan/tray slides, a foot pedal, stainless steel back and 6-inch legs. Accessories are separate selections; confirm the exact model, mounting requirements and resulting installed dimensions before ordering.

Limited warranty

Eligible Steelheart units produced in January 2025 or later carry limited seven-year parts, labor and compressor coverage for the original owner/user, subject to proper installation, use, maintenance and the written terms. Register within 30 days of installation. Standard coverage applies in the United States, Canada, Puerto Rico and U.S. territories. Wear parts, improper installation and inadequate maintenance are excluded. Review the warranty document for production eligibility and full terms.

Compare dual-temperature cabinets

DT1A-HS: 27.5-inch width, refrigerator above freezer · DT2A-FS: 55-inch width, side-by-side refrigerator and freezer. Each cabinet is sold separately.

Product documents