Leesa vs Amerisleep Mattress Comparison

If you’re researching the Leesa and Amerisleep mattresses, then I’ll bet that you’re shopping for an all-foam bed-in-a-box mattress. Trying to sort out which is the right bed for you? You’ve come to the right place. 

In this comparison, we’ll take a focused look at the key differences between the Leesa Original mattress and Amerisleep AS3. Although they seem similar at first glance, they’re actually quite different mattresses.

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An Overview

Key Similarities

• Both of these beds have a medium to medium-firm feel, which is also known as the universal firmness option because so many people love it. This firmness level cushions all sleeping positions and relieves back pain for most body types. 
• The Leesa and AS3 are both all-foam mattresses with a few simple—but effective—layers of foam.
• Each of these beds did notably well on our motion transfer test, which is typical of foam mattresses. They effectively isolate motion on one side of the bed from the other.
• As bed-in-box companies, both Leesa and Amerisleep offer a 100-night sleep trial to test out their beds.

Key Differences

• The Leesa and AS3 mattresses deploy different cooling technologies. Leesa’s comfort layer is remarkably breathable, allowing for lots of airflow. The AS3 mattress features open cell memory foam that enables body heat to escape from the foam.  
• Amerisleep’s 20-year warranty is twice as long as Leesa’s 10-year warranty. 
• The Leesa’s foam layers do a better job of quickly responding to tossing and turning than those of the AS3.
• Amerisleep’s AS3 has a luxury mattress price range. It runs $350-$500 more expensive than the Leesa.

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Leesa and Amerisleep Sizes

Curious how the sizes for these mattresses compare? Check out the chart below.

	Leesa	Amerisleep
Thickness	10”	12”
Twin	39” x 75”	38” x 74”
Twin XL	39” x 80”	38” x 80”
Full	53” 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”

Learn more about mattress sizes.

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Compare Prices

Take a look at the prices for the mattress sizes offered by Leesa and Amerisleep.

	Leesa	Amerisleep
Twin	$849	$1,149
Twin XL	$899	$1,199
Full	$1,099	$1,349
Queen	$1,199	$1,399
King	$1,399	$1,699
California King	$1,399	$1,699
Split King	N/A	$2,098

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Compare Layers and Feel

Next, we’ll look inside the Leesa and AS3 mattresses to get a better idea of what’s behind their special features.

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Compare Our Scores

We tested both of these mattresses in our lab using our 14-point assessment. Get a more nuanced sense of where these two mattresses shine by comparing their Mattress Advisor assessment scores below.

	Leesa	Amerisleep
Shipping	10	8
Trial Period	9	9
Return Policy	10	10
Warranty	9	10
Set-Up Test	8.5	9.5
Motion Transfer Test	9	8.75
Edge Support Test	8.5	8
Pressure Relief Test	8.5	7.75
Spinal Alignment Test	9	8.25
Responsiveness Test	9.5	7
Cooling Evaluation	8.5	8
Durability Evaluation	8	8.5
Customer Service Score	9	9
Social Impact Score	10	4
TOTAL SCORE	9.3/10	8.4/10

At this point, you probably have an idea of which mattress is better for you. We’d like to help that reasoning along by highlighting these mattresses’ performances in pressure relief, spinal alignment, and responsiveness.

Pressure Relief and Alignment

The Leesa scored almost a full point better than the AS3 for pressure relief. It does a slightly better job of lifting stress off of your pressure points, making it the better option for side sleepers. The Leesa also outperformed the AS3 by 0.75 points for spinal alignment. This is an important factor for all sleeping positions, but particularly stomach sleepers. 

Responsiveness

Combo sleepers should pay attention to the scores for responsiveness, which measure how well a mattress responds to your changes in position. Again, the Leesa scored higher, this time by 1.5 points. 

We’d like to point out that neither of these mattresses scored poorly in any of these areas, so you’re set for success with both beds. 

Motion Transfer

Your particular sleep environment plays a role in which mattress will feel the most comfortable. Couples often look for a mattress that will reduce disruptions from their sleeping partners. Both the Leesa and AS3 scored high on motion isolation, so both are good picks. 

Cooling

Additionally, hot sleepers or those in warm climates look for mattresses that sleep cool. While the Leesa marginally outperformed the AS3 in this category, both mattresses feature effective cooling technologies. 

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Which Is the Best Mattress? 

While we love both of these all-foam mattresses, the Leesa outperformed the Amerisleep AS3 in all but two categories. Not only is it one of Mattress Advisor’s highest-rated mattresses, but it’s also more affordable than the Amerisleep AS3. It also has a super soft and breathable cover to keep you comfortable all night long.

The AS3 is the bed for you if you’re looking for the long-term insurance the 20-year warranty can provide. Like the Leesa, it incorporates a cooling cover to prevent you from overheating. It’s great for couples, plus-sized individuals, and those with neck or back pain.

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