The Best Backup Freezer

Whether you’re stocking up for a big family, prepping for emergencies, or simply tired of squeezing frozen goods into your kitchen fridge, a dedicated backup freezer offers the extra storage you need.

In this guide, we’ve researched and analyzed the top options on the market, evaluating each model against consistent criteria and scoring it on our 0 to 10 BP Score.

Our roundup covers chest and upright freezers from trusted brands, helping you find the perfect unit for your home, garage, or basement. Scroll down to see our top picks.

BestProducts is an independent review site. We do not conduct our own product trials; our evaluations are grounded in research, published data, expert review consensus, and verified buyer feedback. We earn a commission when you purchase through our links, but this never influences our recommendations.

Best Backup Freezer Buying Guide

Capacity and Size

Choosing the right capacity is crucial. Freezers range from compact 3.0 cubic feet models perfect for a dorm or small apartment to large 14 cubic foot units that can store months of food for a family.

Consider your household size and how often you plan to shop in bulk. A smaller unit (under 5 cu. ft.) works well as a supplementary freezer, while a 7+ cu. ft. model offers substantial backup storage.

Also measure your available floor space and check the door swing clearance, especially for upright freezers. For more on fitting freezers into tight spots, see our slimline freezer guide.

Chest freezers typically offer more usable space for the same footprint compared to upright models, but upright freezers make organization easier with shelves and bins.

If you prioritize easy access to frequently used items, an upright design may suit you better. For large families, a chest freezer with over 10 cu. ft. is often the most cost-effective choice.

Remember that a full freezer runs more efficiently than an empty one, so don’t oversize too much.

Type: Chest vs. Upright

The classic debate in backup freezers is chest versus upright. Chest freezers have a top-opening lid and are generally more energy-efficient because cold air doesn’t spill out when opened.

They also tend to be more affordable per cubic foot and can hold awkwardly shaped items. However, you may need to dig to find items at the bottom.

Upright freezers open like a refrigerator, making it easier to see and reach everything. They often include adjustable shelves, bins, and sometimes even a lock.

Uprights take up less floor space and are easier to organize, but they can be pricier and may have less insulation, leading to slightly higher energy use.

For a deeper dive into different freezer types, check out our commercial freezer roundup if you need heavy-duty performance.

Both types are available in various sizes, so your choice ultimately depends on your storage habits and space constraints. If you plan to store large cuts of meat or bulk boxes, a chest freezer is hard to beat.

If you value quick access and visibility, an upright is the way to go. Many modern upright models also offer convertible functionality, allowing you to switch between freezer and refrigerator modes, adding flexibility.

Energy Efficiency and Operating Costs

A backup freezer runs 24/7, so energy efficiency directly impacts your electricity bill. Look for Energy Star certified models, which use at least 10% less energy than non-certified units.

Chest freezers are generally more efficient due to their better insulation and less cold air loss. Upright freezers with auto-defrost may use more energy than manual defrost models, but they save you the hassle of defrosting.

Consider your local electricity rates and how often you open the door. For example, a high-efficiency chest freezer in a garage can keep costs low.

Also, place your freezer in a cool, well-ventilated area away from heat sources to maximize efficiency. For more tips on selecting an efficient freezer, see our quality freezer guide.

Some freezers offer adjustable temperature controls and even digital displays, allowing you to set the ideal temperature for different foods. A temperature range down to -10°F or lower is beneficial for long-term meat storage.

Models with a fast-freeze function can quickly bring down the temperature after adding a large batch of groceries. Energy consumption is typically listed in the specs as annual kilowatt-hours (kWh); lower is better.

Temperature Control and Features

Precise temperature control is essential for keeping food safe and preserving quality. Most freezers allow you to set a target temperature, but some offer more granular control than others. Look for models with a mechanical dial or digital thermostat.

Digital displays show the actual internal temperature, which is helpful for monitoring. Some freezers include a low-temperature alarm or power failure indicator, giving you peace of mind during a power outage.

Additionally, features like removable baskets, dividers, and interior lights can make organization and access much easier. For more on freezers with advanced features, check our frostless freezer guide.

Convertible freezers are becoming popular, especially for those who want flexibility. These units can switch between freezer and refrigerator modes, making them ideal for garages or basements where seasonal needs change.

If you think you might need extra fridge space during holidays, a convertible model is a smart choice. Also, consider noise levels: freezers with compressor insulation or low-noise design are better for living areas.

Build Quality and Warranty

A backup freezer is a long-term investment, so build quality matters. Look for sturdy handles, smooth-rolling casters (or leveling legs), and a durable exterior finish that resists rust and scratches.

Interior liners should be easy to clean and resistant to cracking. A good warranty typically covers the compressor for 5, 10 years and parts/labor for 1, 2 years. Some brands offer extended warranties or service plans.

Reading verified buyer feedback can reveal common issues like door seal failures or thermostat malfunctions. For a look at the most reliable freezers, see our reliability freezer guide.

Additionally, consider the garage-ready rating. Some freezers are designed to operate in a wider temperature range, from near-freezing to over 100°F, making them suitable for unconditioned spaces.

If you plan to place your backup freezer in a garage or shed, look for a model explicitly labeled as garage-ready. Otherwise, extreme temperatures can shorten the compressor’s life or cause inconsistent cooling.

Why You Should Trust Us

At BestProducts, we are committed to providing honest, unbiased recommendations. Each product in this roundup has been evaluated against a consistent set of criteria and assigned a BP Score on a scale of 0 to 10.

Our scoring is based on comprehensive research: we analyze specifications, expert review consensus, verified buyer feedback, and published data from reputable sources.

We do not conduct our own product trials; our evaluations are grounded in research, published data, expert review consensus, and verified buyer feedback. Our editorial team has years of experience covering home appliances, and we prioritize transparency.

We earn a commission if you purchase through our links, but this never influences our ratings or recommendations.

Final Thoughts

• Best Overall: Midea 7.1 Cu.ft Upright Freezer, This convertible upright freezer offers excellent capacity, flexibility, and a high BP Score, making it the top choice for most households.
• Best Chest Freezer: WANAI Chest Freezer 3.5 Cu.Ft, Compact, energy-efficient, and affordable, this chest freezer is perfect for small spaces and delivers outstanding value.
• Best Budget Pick: Novadexor Chest Freezer 5.0 Cu Ft, With a low price point and solid performance, this chest freezer is ideal for budget-conscious shoppers needing extra storage.
• Best for Large Families: Hamilton Beach 14 cu ft Chest Freezer, Massive capacity and a garage-ready design make this a great option for families who buy in bulk.
• Best Compact Upright: ICEVIVAL 7 Cu Ft Upright Freezer, This convertible upright combines a space-saving footprint with versatile functionality, earning top marks.

Frequently Asked Questions

What size backup freezer do I need?

The size depends on your household and storage needs. A small 3, 5 cu. ft. unit is enough for a couple or to supplement a kitchen fridge.

A family of four might need a 7, 10 cu. ft. freezer, while larger families or those who bulk-buy meat may want 14+ cu. ft. Also consider available floor space and door clearance. For guidance, see our inexpensive freezer guide for budget options.

Can a backup freezer be placed in an unheated garage?

Yes, but only if the freezer is rated as garage-ready. Most standard freezers are designed for indoor use (temperatures between 32°F and 110°F). In extreme cold, the freezer may not run properly, and in extreme heat, the compressor may overwork.

Look for models with a wider ambient temperature range. Our outdoor freezer guide covers garage-ready options.

How much does it cost to run a backup freezer per month?

Operating cost varies by size, efficiency, and local electricity rates. An Energy Star certified chest freezer of 5, 7 cu. ft. typically uses around 200, 300 kWh per year, costing roughly $20, $40 annually. Uprights may use more.

Using a freezer with good insulation and not overfilling it helps keep costs down. For more on energy-saving freezers, check our performing freezer guide.

Should I choose a chest freezer or an upright freezer for backup?

It depends on your space and usage habits. Chest freezers are more energy-efficient, hold more for the same footprint, and are usually cheaper. Upright freezers are easier to organize and access, and they take up less floor space.

If you need to store large, odd-shaped items, a chest freezer is better. If you want quick access to packaged foods, an upright is more convenient. For a detailed comparison, refer to our tall freezer guide.

Do backup freezers need to be defrosted manually?

Some freezers have auto-defrost (often upright models) which eliminates the need to manually defrost. However, auto-defrost can slightly increase energy use and may cause freezer burn if not managed.

Manual defrost chest freezers are more energy-efficient but require periodic defrosting when frost builds up. If you dislike maintenance, choose an auto-defrost model. For more on defrost options, see our frostless freezer guide.

Can I use a backup freezer as a refrigerator?

Only convertible freezers can switch between freezer and refrigerator modes. If you need both functions in one unit, look for a convertible model like the Midea or ICEVIVAL in our list.

These allow you to adjust the temperature range, typically from about -10°F to 45°F. This flexibility is great for seasonal needs or if you want a dual-purpose appliance. For more convertible options, browse our bottom freezer guide.

Compare Backup Freezers

Ready to choose? Use the table above to compare key specs, BP Scores, and prices. Each model has been vetted through our research process. For additional options, you can explore our freezer category page for more reviews.

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