Your Sub Zero 500 or 600 models have done a great job for your family over the years, should you Replace a Sub-Zero 500/600 Series?

The Sub Zero 500 series debuted in 1987, followed by the 600 series in 1996. Even high-end manufacturers, such as Sub Zero, have a product lifespan in which they work well for a while before breaking down more frequently.

These award-winning models have an average lifespan of 18 to 20 years.

It’s possible that your Sub Zero 500 or 600 series model is nearing the end of its normal life cycle. Moving forward with a new refrigerator can be advantageous.

WHY YOU MAY BE Reluctant

There are a few reasons why you might be hesitant to replace your Sub Zero 500 or 600 series refrigerator, especially if you aren’t experiencing any issues with it.

One of the first reasons people put off replacing their refrigerator is the belief that if it isn’t broken, don’t fix it. It can be difficult to spend money on a new item when the old one appears to be doing its job. Even if your old refrigerator appears to be in good working order, it could be on the verge of failing or costing more to run than a newer, more energy-efficient model.
This also has an impact on the pricing. A high-quality appliance replacement can be an unexpected expense, but it is often a less expensive option in the long run. You won’t have to worry about expensive repairs, losing an entire refrigerator and freezer full of food when the old one breaks down, or paying more on your electric bill because the old refrigerator isn’t as energy efficient as modern appliances.
Others may be hesitant because the refrigerator is built into the kitchen cabinets and replacing it appears to be a major hassle. It will take some skill to remove the old unit and install the new one in the same location without anyone noticing that it isn’t the same refrigerator as before.


It’s easy to believe that any new refrigerator will be the same as your old one, but this is not the case. The Sub Zero refrigerator line has some amazing upgrades that can make upgrading to a new refrigerator a great idea.

When compared to older models, they are more energy efficient and qualify for Energy Star certification.

You’ll notice that newer refrigerators are quieter than older ones due to compressor upgrades.

Because of advancements in newer refrigerators, food will last longer and taste better.

There are added air purifiers, for example, that will assist in filtering out odors, ethylene, bacteria, mold, and viruses.

Because ethylene causes your food to ripen and overripen when exposed to it, having it filtered out will give you more time with your fresh produce at its peak flavor and texture.

Most newer models also include dual compressors, which aid in odor transfer and prevent freezer burn.

A newer model will also give you more control over the refrigerator’s temperature.


When you’ve decided that you’d like to begin taking advantage of these new benefits, it’s time to replace your old refrigerator, especially if it needs to fit in your cabinets. It can be difficult to determine which Sub Zero refrigerator model will best replace your old one.

We’ve created some charts to help you find the exact model that will replace the refrigerator model you’ve been using for years.



Old Sub-Zero Model New Sub-Zero Model
501F Series BI-36F
501R Series BI-36R
506 Series UC-15i
511 Series BI-30U
532 Series 648PRO or 648PROG
532 Series BI-48S or BI-48SID
542 Series BI-42S or BI-42SID or BI-42UFD
550 Series BI-36U or BI-36UFD
561 Series BI-36S or BI-36UFD
590 Series BI-48SD or BI-48SID



Old Sub-Zero Model New Sub-Zero Model
601F Series BI-36F
601R Series BI-36R
611 Series BI-30U
632 Series BI-48SD or BI-48SID
642 Series BI-42S or BI-42SID or BI-42UFD
650 Series BI-36U or BI-36UFD
661 Series BI-36S or BI-36UFD
680 Series BI-42S or BI-42SID or BI-42UFD
685 Series BI-42S or BI-42SID or BI-42UFD
690 Series BI-48SD or BI-48SID
695 Series BI-48SD or BI-48SID


Old Sub-Zero Model New Sub-Zero Model
201FD Series BI-36F
215FD Series BI-36F
211 Series BI-30U
215R Series BI-36R
235 Series UC-15i
241 Series BI-36U
244 Series UC-24
251 Series BI-36U
2511 Series BI-36U
2711 Series BI-36U
2811 Series BI-36U
3211 Series BI48S or BI-48SID
315i Series UC-15i
361 Series BI-36S

Need help matching up the correct new model for your existing refrigerator?

not ready to upgrade, but need to repair your old Sub Zero refrigerator?

Contact us at to get the information you need for your Sub Zero refrigerator needs.