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Project Produce: Which Refrigerator Keeps Food Fresh The Longest?

We call it Project Produce.

We will test all the brands with claims of keeping food fresher for a longer time.


Each refrigerator will have the same fruits and vegetables. We will check these fruits and vegetables weekly for one month to determine the best refrigerator.

Sub-Zero, Beko, Bosch, Thermador, and Samsung will all be part of this test.

Testing Food Freshness In Refrigerators

French-door-counter-depth-refrigerators-at-yale-appliance-in-hanoverCounter Depth Refrigerators at Yale Appliance in Hanover

Why test?

Last week, we were writing about the new Beko refrigerators. It has Blue Light Crisper Bins.

Blue Lighting emulates photosynthesis or how green plants use sunlight to synthesize food. (don’t feel bad, I had to look photosynthesis up).

In other words, Blue Lights trick plants into not dying or not spoiling quicker.

Although it may sound far fetched, sunlight renders blueish on the Kelvin scale, so it is possible to extend life with a blue light.

Then again, someone has to investigate whether air cleaners, air scrubbers, “Cool Pantry” features, Blue Lights, and Green Shelves keep food fresher.

Sub-Zero, Thermador, Bosch, Beko, and Samsung will be tested with similar fruits and vegetables.

The Produce Were Testing: 

  • Cucumbers
  • Yellow Bell Peppers
  • Lettuce
  • Grapes
  • Lemons

We listed each plus their marketing claims as to why their brand keeps food fresher.

Learn More

Best Refrigerator Brands To Keep Food Fresh (Claims Only)


sub-zero-and-wolf-kitchen-at-yale-appliance-hanover (1)Sub-Zero & Wolf Appliance Kitchen at Yale Appliance in Hanover

You have to believe Sub-Zero should be at the top of the list.

Its magnetic seal is hard to open for a human being. It must be harder for an air particle to squeeze through. (That’s a joke).

Freshness Design: Besides the vacuum door seal, the air scrubber scrubs gasses off spoiling foods to keep food fresher longer.

This is a NASA discovery (seriously), and it also eliminates cross-contamination with other foods.

Crisper Bins: Magnetically sealed to keep air out.

Twin Compressors: The refrigerator and freezer air does not blend, so each compartment is staying at the right temperature and humidity.

Sub-Zero’s Refrigerator We’re Testing: Sub-Zero Professional Counter Depth Refrigerator BI-36UFD/O



Thermador-kitchen-display-at-yale-appliance-in-hanoverThermador Appliance Kitchen at Yale Appliance in Hanover

Cool Produce Bins: Thermador redesigned their refrigeration and has the Cool Produce bin on the door to set temperature and humidity.

Twin Compressors: Like the Sub_Zero, dual compressors ensure cold and warmer air do not cause premature spoilage.

Thermador’s Refrigerator We’re Testing: Thermador Professional Counter Depth Refrigerator T36BT920NS

thermador pro refrigerator


bosch-kitchen-at-yale-appliance-in-hanoverBosch Appliance Kitchen at Yale Appliance in Hanover

Bosch freestanding refrigerators are the only non-built-in types with two compressors to keep the air separate.

Ethylene Gas Filter: This device also removes spoiling gas fumes off food. It’s a filter, not a “scrubber.” We will know the difference before the end of the month.

Two Evaporator Models:

Evaporator Vs Compressor (technical jargon)

For the evaporators to function correctly, the compressor must raise the refrigerant gas’s temperature by increasing its pressure.

Then excess heat is expelled, and the gas compresses into a liquid in the condenser.

Once turned into a liquid, it invades the evaporator. In the evaporator, the liquid will expand and boil at a lower pressure.

This allows it to collect heat from the food compartment until it evaporates back into a low-pressure, low-temperature gas to restart the cycle over again.

What does this mean?  It means the evaporator is part of the overall compressor.

What does it really mean?  

In terms of freshness, we will find out

Bosch’s Refrigerator We’re Testing: Bosch Counter Depth Refrigerator B36CT80SNS

Bosch B36CT80SNS


samsung-kitchen-package-at-yale-appliance-in-hanover-1Samsung Appliance Kitchen at Yale Appliance in Hanover

Samsung was the first mass-produced refrigerator addressing better food storage with two evaporators.

How do two evaporators fare versus two compressors on your produce? We will find out in a month.

Cool Pantry Plus: This allows air in and out of the crisper bin by slats.

Samsung’s Refrigerator We’re Testing: Samsung Counter Depth Refrigerator RF23R6201SR



Beko has the most tech in their crisper bins to keep food fresher for a more extended period.

Two Evaporators: Similar to Samsung, the two environments are kept separate.

Active Fresh Blue Light: Blight emulates sunlight to further photosynthesis and keep food fresher. It’s a bold claim. We will find out if the claim has validity.

Again, sunlight does render blue on the Kelvin scale, so maybe bluish light does trick plants into growing and not spoiling.

EverFresh +: Keeps food fresher for a longer time. In reality: It’s a more heavily gasketed crisper to keep condensation and gasses out of the crisper.

Beko’s Refrigerator We’re Testing: Beko Counter Depth Refrigerator BFFD3624SS

Beko Counter Depth Refrigerator-1

Have questions? Click here to check out our Learning Center.

Our Refrigerator’s Test Results

(First Veggies, then fruit)

Beko Counter Depth Refrigerator Vegetable Test

Beko Vegetables 3

Beko Counter Depth Refrigerator Fruit Test

Beko Fruit 2

Bosch Counter Depth Refrigerator Vegetable Test

Bosch Vegetable

Bosch Counter Depth Refrigerator Fruit Test

Bosch Fruit

Samsung Counter Depth Refrigerator Vegetable Test

Samsung Vegetable

Samsung Counter Depth Refrigerator Fruit Test

Samsung Fruit

Sub-Zero Pro Counter Depth Refrigerator Vegetable Test

Project Produce Sub-Zero - Vegetables

Sub-Zero Pro Counter Depth Refrigerator Fruit Test

Project Produce Sub-Zero - Fruits

Thermador Professional Refrigerator Vegetable Test

Project Produce Thermador - Vegetables

Thermador Professional Refrigerator Fruit Test

Project Produce Thermador - Fruits

Which Refrigerator Keeps Food Fresh The Longest?

Finally, you will be able to compare if the refrigerator’s crispers, air filters, air scrubbers, two compressors, two evaporators, and bluish lighting affect food storage.

Seriously, if there is a clear winner, you can save a good deal of money by not throwing out food prematurely.

We will republish this article weekly for a month to see which company wins.

Wonder who wins…and whether I need to preorder blue lights for my garden.

Additional Resources

Download the Yale Counter Depth Refrigerator Buying Guide with features, specs, and inside buying tips for regular, pro, and integrated counter depth refrigerators. Well over 580,000 people have read a Yale Guide.

View our counter depth refrigerator buying guide

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