Amerisleep AS2 mattress

Amerisleep AS2 vs AS3 Mattress Comparison

Deciding between the AS2 and AS3 mattresses? Our comparison will help you make the right choice.

Amerisleep is a bed-in-a-box mattress brand that crafts their beds in the USA. They have 5 memory foam mattress models and have recently begun offering hybrid mattresses. In this review, we’re going to compare two of the most popular Amerisleep mattresses, the AS2 and AS3 memory foam beds. 

Thanks to variations in their inner compositions, these mattresses work best for different sleepers. Read on to find out which Amerisleep bed is right for you.

AS2 vs AS3 Overview

Customer Rating
MA Score
Trial Period

Amerisleep AS2

Customer Rating
MA Score
8.8 / 10

Memory foam mattress with cooling technology (part of Amerisleep's Firm Collection)


Firm - 7/10


Memory foam

Trial Period

100 days


20-year limited warranty

Amerisleep AS3

Customer Rating
MA Score
8.4 / 10

Memory foam mattress with cooling technology (part of Amerisleep's Soft Collection)


Medium: 6/10


Memory foam

Trial Period

100 days


20-year limited warranty

Key Similarities

  • Both are memory foam mattresses made from the same 3 types of proprietary Amerisleep foam. 
  • Both are cool for all-foam mattresses thanks to open cell foam and an identical cooling Celliant cover
  • Both work well for all body types
  • Both come with the same 20-year warranty and 100-night sleep trial with a full refund

Key Differences

  • The AS2 adapts more quickly to movement and is superior for those who toss and turn. 
  • The AS3 is better for couples thanks to superior edge support and motion isolation properties. 
  • The AS2 is a medium firm to firm mattress while the AS3 has a softer medium firmness level
  • The AS3 hugs the body more closely than the AS2. 
  • The AS2 offers superior pressure relief and spine alignment, making it better for sleepers with aches and pains. 

Related: Amerisleep AS1 Mattress Review

Amerisleep AS2 mattress

AS2 Mattress Review Highlights

  • The AS2 has a medium-firm to firm feel that registers as a 7 on the 1-10 firmness scale, offering the right mixture of support and cushion for most back and stomach sleepers.
  • The AS2 scored highly in our tests for pressure relief and spine alignment. Thanks to a thick 3” zoned foam transition layer, pressure points are cushioned while the spine is properly supported. It’s a great combination for those with lower back pain
  • The AS2 mattress is incredibly responsive, making it easy to move around and get comfortable. Combo sleepers do best on a responsive bed.
  • Thanks to a cooling cover and memory foam with an open-cell structure, the AS2 is a good fit for hot sleepers.
Amerisleep AS3 mattress

AS3 Mattress Review Highlights

  • The AS3 is the most popular Amerisleep mattress model. 
  • With a medium feel that registers a 6 on the 1-10 firmness scale, the AS3 delivers a balance of plush cushioning and support that works for every sleeping position—although it’s best for side and back sleepers.  
  • The AS3 scored highly in our tests for motion transfer and edge support, two attributes that make it an excellent mattress for couples who sleep together. 
  • Thanks to its high-quality foam construction, the AS3 is impressively durable, earning an 8.5/10 in our durability evaluation.
  • The Celliant fabric in the mattress cover has unique properties that help to keep the mattress cool while boosting tissue oxygenation, speeding recovery, and supporting deep sleep.

Compare Sizes

The Amerisleep AS2 and AS3 mattresses come in the same sizes and have identical dimensions. 

Thickness 12” 12”
Twin 38” x 74” 38” x 74”
Twin XL 38” x 80” 38” x 80”
Full 54” x 75” 54” x 75”
Queen 60” x 80” 60” x 80”
King 76” x 80” 76” x 80”
California King 72” x 84” 72” x 84”
Split King 76” x 80” 76” x 80”

Learn more about mattress sizes.

Head-to-Head Prices

The AS3 mattress is slightly more expensive, costing $100-$200 more, depending on the mattress size. 

Twin $999 $1,099
Twin XL $1,049 $1,149
Full $1,149 $1,249
Queen $1,299 $1,399
King $1,599 $1,699
California King $1,599 $1,699
Split King $1,898 $2,098

Related: Amerisleep AS4 Mattress Review

Compare Mattress Feel

The Amerisleep AS2 and AS3 mattresses are both 12” memory foam mattresses made from the same 3 layers. Thanks to variations in the thickness of each layer, these beds are best for different sleepers. 

Let’s take a look at what sets these mattresses apart. 

The Amerisleep AS2 mattress is crafted from three layers of foam that contribute breathability, contouring, and support. 

With a thin (2”) comfort layer, the AS2 doesn’t allow the body to sink in too low. Directly underneath the top layer of memory foam is a thicker (3”) polyfoam layer. Thanks to zoned support, this layer ensures that the spine stays supported and the hips and shoulders cushioned. 

The base layer of the AS2 mattress is their sturdy Bio-Core polyfoam, whose high-density construction adds durability and prevents excess sinkage or sagging.

The Amerisleep AS3 mattress is made using the same 3 foam layers as the AS2 mattress, but thanks to variations in thickness, it boasts a softer, more conforming feel.

The upper layer of the AS3 mattress is a generous 3” of plush memory foam, which is 1” thicker than the AS2. This added thickness makes the AS3 feel much more like a traditional memory foam mattress that deeply cradles the body. 

The transition foam is the same zoned foam as the AS2, just 1” thinner, and the support foam layer is identical.

Inside the AS2 Mattress

  • Celliant mattress cover: A cooling cover with Celliant fabric for enhanced healing and fewer aches and pains. 
  • Bio-Pur comfort foam: A memory foam layer whose open-cell structure facilitates air flow, dissipating body heat. Made from plant-based materials, this layer is eco-friendly
  • Affinity with HIVE transition foam: A zoned support foam that balances pressure relief with lumbar support for optimal body alignment. The softest foam is at the shoulders and firmest foam supports the body’s trunk.
  • Bio-Core support foam: Highly durable high-density polyfoam for added stability and enhanced longevity.
Inside the Amerisleep AS3 mattress

Inside the AS3 Mattress

  • Celliant mattress cover: The same cooling cover that facilitates tissue repair.   
  • Bio-Pur comfort foam: A thicker layer of Amerisleep’s Bio-Pur medium-soft memory foam leads to a deeper hugging feel when compared to the AS2.  
  • Affinity with HIVE transition foam: The same zoned support layer, but less of it. 
  • Bio-Core support foam: An identical support layer for a stable, durable mattress.

Compare Mattress Advisor Scores

We put both of these mattresses to the test at the Mattress Advisor mattress lab. Take a look at how they performed in our side-by-side comparison table. 

Shipping 10 8
Trial Period 9 9
Return Policy 10 10
Warranty 10 10
Set-Up Test 8.5 9.5
Motion Transfer Test 8.5 8.75
Edge Support Test 7.5 8
Pressure Relief Test 9 7.75
Spinal Alignment Test 8.5 8.25
Responsiveness Test 9.5 7
Cooling Evaluation 8 8
Durability Evaluation 8 8.5
Customer Service Score 9 9
Social Impact Score 4 4
TOTAL SCORE 8.8/10 8.4/10

Related: Amerisleep AS5 Mattress Review

Spinal Alignment

Maintaining proper body alignment is just as important while sleeping as when you are awake. Because you aren’t able to control your posture when asleep, it’s up to choosing the right mattress to do it for you. 

When we put these mattresses to the test, the Amerisleep AS2 scored slightly higher than the AS3 for spinal alignment. With an extra inch of zoned support foam, it makes sense that the AS2 would do a better job of keeping the body in a healthy alignment. If you struggle with aches and pains and enjoy a firmer mattress, the AS2 may help you find relief. 

Edge Support

If you’re someone who sleeps along the edge of the bed, or if you use the edges to put your shoes on, the best mattress for you is one with solid edge support. Couples and those who share their bed with kids or pets tend to use the entire mattress surface, making edge support important. 

The AS3 scored higher for edge support, earning an 8/10 (in comparison to the AS2’s 7.5/10). That, combined with impressive motion dampening abilities, makes the AS3 a great option for those who share the bed.  


Memory foam mattresses have a tendency to make it harder to move around when compared to a hybrid or innerspring mattress. Some foams allow you to sink in too much, or they may simply change shape slowly. Both of these properties make it hard to get comfortable when you switch positions at night. Sleepers who toss and turn are best suited by a responsive mattress, which is one that readily adapts to your movements. 

Fortunately, not all memory foam mattresses are hard to move around on. The Amerisleep AS2 scored an impressive 9.5/10 for responsiveness, in comparison to the AS3’s 7.5/10. Combination sleepers and anyone who moves around a lot at night are likely to prefer the ease-of-movement that the AS2 supports. 

The Bottom Line: Which Is the Best Mattress? 

When looking at the performance of the AS2 vs AS3 mattresses during our in-house testing, the AS2 outperformed the AS3. Its impressive responsiveness and ability to balance lumbar support with pressure relief make it an excellent mattress for those who prefer a firmer memory foam feel.

However, there are those who prefer the AS3 to the AS2. With superior motion isolation and edge support, most couples are going to sleep more soundly on the AS3. Additionally, it’s softer and brings a more traditional memory foam feel, a combination that’s better for side sleepers

No matter which bed you choose for your new mattress, it comes with a risk free 100-night sleep trial and generous 20-year warranty

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