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Why Stone Cold is Superior to other Marine Fridges
Nau-T- Kol Marine Refrigeration
and Air-Conditioning
Knowledge, experience & innovative thinking created this amazingly efficient 12/24v fridge for world cruising yachts.
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The amazing Stone Cold+ 12/24 volt marine refrigerator is a result of 30 years of marine refrigeration experience. Designer Jeff Stone's experience goes back to the 1970's. He custom designed and built refrigeration systems for cruising yachts heading out into the Pacific.
Years later Jeff and his wife Dawn also became cruisers. They cruised the Pacific, then the Caribbean, Jeff is now back in the marine refrigeration business located in Trinidad, Jeff has tapped into the latest developments in the refrigeration industry worldwide, with results being a product specifically designed for the needs of cruising yachts.
Stone Cold systems accommodate refrigeration boxes to 15 cu. ft. and freezer boxes to 5 cu. ft. and are cold plate compatible.
The heart of this efficient unit is the Danfoss variable speed compressor. This combined with high quality components and innovative design make the Stone Cold a major break-through in performance, durability and energy efficiency no other manufacturer can match. |
14 lbs. (6.35 kg) 10.5" x 9.5" x 7" (266.7mm x 241.3 x 177.8)
$1549 USD includes - Stone Cold System (water & air cooled with Powermatic) your choice of evapor-ator size and water pump, water filter and thermostat. |
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READY TO INSTALL......WE SHIP ANYWHERE...
More Reasons to Buy a Stone Cold System
Over sized condenser: Designed for severe tropical conditions
Air cooled control module: The unit is designed to use the condenser fan to also cool the electronic module to insure reliability.
Current consumption is as low as 1.95 amps: With the exclusive Powermatic control running the compressor at 2000 rpm the average power used is *1.95 amps per hour.
Low and high pressure valves: This feature allows for complete servicing of the unit.
High grade silver solder: All plumbing is put together using 52% silver content solder for maximum durability.
Fresh water cooling: The water cooling system can be set up to use your fresh tank water efficiently, with no appreciable water temperature increase. You can decide what's best for you, sea water cooling or fresh water.
Pre tested: All Stone Cold units are pre tested after manufacturing for 5 days. Performance data is recorded and logged with Nau-T-Kol.
*Consumption may vary due to usage and cold box construction.
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Our new Stone Air 12/24volt marine refrigeration system is air cooled only and features dual fans, an oversized condenser designed for tropical climates, an energy saving variable speed control and fault indicator lights.
Stone Air is competitively priced so it gives our customers the choice of air / water cooling (Stone Cold) or air cooling alone (Stone Air) depending on the yachts needs and the captains pocketbook.
The profile of the original Stone Cold air / water cooled system has been redesigned. The system now measures 14” x 17” allowing more installation versatility. |
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COMPRESSOR - This variable speed Danfoss Compressor (2,000 to 3,500 rpm) can be custom set between 10.5v and 11.5v for shut down, depending on your energy supply. |
CONTROL MODULE - It has the latest solid state design which uses less energy. |
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POWERMATIC - Solid state board, 3 settings with built in water pump selector switch. Auto sense battery charge and adjusts compressor speed accordingly, Low for conserving energy and Hi for maximum cooling.
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High Grade Silver Solder & Cupro- Nickel Plumbing. All plumbing is corrosion resistent cupro-nickel and is bound with a 52% silver content solder; sealing the fittings for years for trouble free operation. |
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AIR COOLED CONDENSER - Stone Cold com-bines water cooling with this air cooled condenser to increase operational efficiency, plus you have the added convenience of being able to run the fridge while hauled out. |
COOLING FAN - The brushless cooling fan draws only 0.45 amps. It cools both the condenser and the electronic module to ensure reliability. |
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WATER PUMP - The R-134 refrigerant is cooled by a dual system: Air and Water. A 24v water pump runs on 12v, making it more energy efficient. |
DRYER - A heavy duty dryer & filter with a servicing valve keeps all the moisture and contaminates out of the system. |
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$1,100USD
Stone Air System (air cooled) with variable speed control and your choice of
evaporator and thermostat.
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Compare the Stone Cold+ features to these other popular Brands |
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Stone Cold+ |
Adler Barbour |
Isotherm |
Frigoboat |
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Corrosion resistant paint |
Yes |
No |
No |
No |
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Oversized condensor |
Yes |
No |
No |
No |
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Top grade silver solder |
Yes |
No |
No |
Yes |
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Low/high pressure valves |
Yes |
No |
No |
No |
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Powermatic control system |
Yes |
No |
No |
No |
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Compressor / module cooling |
Yes |
No |
No |
No |
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Polymer base |
Yes |
No |
No |
No |
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Air/water cooled condensor |
Yes |
Yes |
No |
No |
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Full range of evaporators |
Yes |
Yes |
No |
Yes |
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E-mail support with manufacturer |
Yes |
No |
No |
No |
