PRO 48 Refrigeration 

Thank You 

Thank you for purchasing your new Sub-Zero PRO 48 unit. 

With Sub-Zero, you can rely on a 60-year tradition of 

quality and reliability. 

Built in to cabinetry or freestanding, the PRO 48 is just 

the latest example of Sub-Zero pushing food preservation 

to new heights. And of course, the PRO 48 meets rigorous 

Department of Energy standards for residential use. 

Featuring a glass door on model 648PROG or top-tobottom stainless steel on model 648PRO. The PRO 48 

brings together the latest technology and finest features in 

home refrigeration to give you the freshest food possible. 

Your Sub-Zero is protected by a warranty that is one of 

the finest in the industry. Take a moment to read the 

warranty statement at the end of this guide and refer to it 

should service become necessary. 

This use & care guide will answer most of your questions 

about the features, operation and maintenance of your 

PRO 48 unit. If you have questions that are not addressed 

here, call Sub-Zero customer care at 800-222-7820 or visit 

our website, subzero.com. 

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subzero.com 

Dual Refrigeration 

The PRO 48 continues the Sub-Zero tradition of superior 

quality and reliability. Sub-Zero pioneered the development of our dual refrigeration system, giving you optimum 

fresh and freezer food storage in ideal self-contained 

sections. Both refrigerator and freezer maintain accurate, 

consistent temperatures. Dual refrigeration keeps your 

food fresh longer than any other system available. 

With dual refrigeration, the freezer maintains a constant 

temperature within one degree of the temperature you set 

within our range of -soF (-21'C) to +soF (-15'C), without 

unwanted moisture and odor from the refrigerator. Similarly, you can adjust the refrigerator temperature within a 

range of 34°F WC) to 4soF (7'C), for proper humidity levels 

tailored for longer food life expectancy. 

The dual refrigeration system also means there is no 

transfer of fresh food odors to frozen food or ice. The 

Sub-Zero system does not freeze the moisture out of the 

air in the fresh food section. 

Sub-Zero dual refrigeration is also more energy efficient 

than old-fashioned single refrigeration systems. When the 

refrigerator is used frequently during the day it does not 

require the freezer to circulate its very cold, dry air to the 

refrigerator. Instead, the refrigerator uses moist air to keep 

fresh foods fresh and energy use minimal. 
PRO 48 Features 

PRO 48 Features 

• Can be built in or, with the freestanding accessory kit, 

used in a freestanding application. 

• Stainless steel construction, inside and out, for professional strength and beauty. 

• Dual refrigeration system with two compressors and 

three evaporators keep foods fresher longer and 

prevent odor transfer. 

• Microprocessor with up-front touch controls monitor 

pattern-sensing defrost and automatic service alerts. 

• Exterior temperature displays with easy-to-read digital 

readout are accurate within one degree of your preset 

temperatures. 

• Triple-pane, UV-resistant glass door (model 648PROG). 

• LED lights bathe upper compartments in a soft glow. 

Channeled sidewall LEOs on the refrigerator side can 

serve as a door area night light (model 648PROG). 

• Auto-close system with an advanced hinge design lets 

doors finish closing easily and automatically. 

• Adjustable shelves are cantilevered and spill-proof, 

with stainless steel trim (refrigerator) and 100% 

stainless steel (freezer). 

• Removable, slide-out stainless steel bins hold small 

items and fit neatly under any shelf. 

• Touch-and-glide crisper drawer with a tight-sealing 

clear cover gives vegetables generous humidity. 

• Storage drawers allow full access to food with 

adjustable, removable and interchangeable dividers. 

• Automatic ice maker with advanced water filtration 

system for ice as pure as it is fresh. 

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• Easy-access grille flips up, without tools, to access the 

water filter for replacement and condenser for cleaning. 

• Alarm with an audible chime lets you know when doors 

or drawers are left open. 

• Holiday mode allows you to power down one or both 

sides for extended periods or just the weekend. 

• For installations at or above 5,000' (1524 m) in elevation, high altitude glass is available as a special order. 

• Certified by Star-K to meet religious regulations. 

• UL approved for US and Canada. 

• Sub-Zero products are covered by a two, five and 

twelve year residential warranty (exclusions apply). 

See warranty details at the end of this guide. 

This appliance is certified by Star-K to meet 

strict religious regulations in conjunction with 

specific instructions found on www.star-k.org.