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SunStar ST-21CF 21 cu. ft. 12V / 24V DC Solar Chest Refrigerator or Freezer


Add 120v A/C Power Option?: No A/C Power Option

(Shipping rates are based on the address you enter. Residential and liftgate fees are added for residential addresses. Business delivery or terminal pickups are usually much cheaper. Call 800-771-7702 or Text 833-852-4255 for all options).


The SunStar Solar Freezer Series is specially designed to take advantage of rising solar and alternative energy markets. With a specially patented and uniquely in-house designed compressor, we made it possible and pioneered the largest market sized DC powered chest freezer. Backed by our long history in manufacturing, we believe strongly in our products and ability to craft quality and reliable products.

SunStar Solar Freezers are constructed with 4.6 inches of polyurethane insulation, making this one of the best in class in not only keeping your freezer cold, but also keeping energy consumption as low as possible. The SunStar Solar freezer also comes equipped with a built in automatic 12V/24V current switch to allow for operations for almost any battery, location, or situation.

SunStar Solar Freezers also features a galvanized steel interior for durability and longevity, a double gasket design to ensure the tightest seal possible, along with a cooling fan to enhance the life of the compressor and in turn your freezer.

SunStar Solar Freezers are designed with consumer and commercial use in mind. The philosophy behind this product is efficiency, durability, quality, and value.

Suitable Locations:

    • Home – Replacing traditional heavy consumption refrigerators
    • Cabin/Cottages – Go off-grid, instead of paying for electric bills convert to self-sustaining
    • RV/Mobile – Applicable to sustainable and mobile applications
    • Rural/Off-grid – Anywhere it may be costly or not feasible to pull electric lines
    • Replacing Gas powered units


    • 4.6 inch Polyurethane walls
    • Double lid gasket
    • Interior lid light
    • Air cooled condenser for fast cool down
    • Coated steel interior for good looks and easy cleaning
    • Two in one thermostat (refrigerator or freezer)
    • Portable - 6 heavy duty casters on the bottom
    • Total Volume: 595 Liters / 21 cu ft
    • Cooling System: Direct Cooling
    • Temperature Control: Mechanism
    • Rated Operating Voltage: 12V 9.6 - 17V / 24V 21.3 - 31.5V
    • Rated Current (A): 30/15 Amp 12/24 VDC
    • Typical Power Draw: 105 Watt
    • Refrigerant Agent: R134A
    • Blowing Agent: Polyurethane
    • Product Dimensions (inches): Width 82.25" x Height 37.7" x Depth 30.75"
    • Carton Box Dimension (inches): Width 85" x Height 41" x Depth 32"
    • Product Weight: 230 lbs.
    • Shipping Weight: 270 lbs
    • Performance Warranty: 2 Yrs

Energy Consumption Guide (Based on 24 Hr Time Period) @ 12VDC with No Door Openings

Room Temp (Below) @ 38° F (+3° C) @ 0° F (-18° C)
70° F (21° C) 218 WHR 605 WHR
90° F (32° C) 435 WHR
894 WHR


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