Amerisleep Liberty Mattress AS4: All Models Reviewed 2022

It’s not a secret that buying the latest mattress in a box can be an overwhelming experience. Amerisleep Liberty Mattress AS4

In just five minutes of searching online, you’ll be bombarded with ads and companies claiming their mattress is the best. However, in my many years of mattress testing I’ve learned that there isn’t an best mattress for every person.

Companies like Amerisleep, however, make it much easier to find the right fit for you. They offer an all foam and hybrid mattress collection with a variety of different levels of firmness. They truly offer something for to everyone!

Which mattress is most suitable for you?

Continue reading for our full Amerisleep mattress review.

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Amerisleep Overview Amerisleep Liberty Mattress AS4


As we’ve said before, Amerisleep is all about offering their customers a variety of choices. AS1, AS2, AS3, AS1, AS2, AS3, AS4, and AS5 are the five mattress options available. They range from rigid (AS1) to delightfully comfortable (AS2) (As5). Amerisleep mattresses are available in both all-foam and hybrid versions.

Today, we’ll concentrate specifically on the all-foam models. Read on to learn more about hybrid models. We’ll start by looking at the AS3 Hybrid, which is the most well-known hybrid model.

Although the firmness, comfort and support of Amerisleep mattresses differ greatly however, the whole line is likely to be a better choice for certain clients.

Who Would Like The mattresses from the Amerisleep brand?

  • Customers are interested in a variety of firmness options
  • Those who like mattresses made from memory foam
  • People who want to limit their partner’s capacity to feel motion on the mattress.

Who Might Not Like this? Amerisleep mattresses?

  • For those looking for a bouncey mattress
  • People looking for a cheap mattress
  • People who sleep in hot environments at late at night

 

Amerisleep Mattress Firmness and Feel


The subject of firmness has been discussed a few times. There are many mattresses that can be described as firm. Amerisleep mattress has been distinguished with its broad selection of firmness options. Let’s talk about the firmness of each Amerisleep mattress as well as how they feel.

How Firm Are The Amerisleep Mattresses?

Each Amerisleep mattress is firm in its own unique way. For instance, the Amerisleep AS1 is a stiffer-than-average 8/10 mattress , which is the firmer end of the spectrum. The AS2 is the next-softest model. It scores 7.5/10, which is still harder than usual. With scores of 6.5/10 The Amerisleep AS3 is right in the middle of the firmness range. It is the Amerisleep AS4 and AS5 are the two softest versions after that. The AS4 is more comfortable than average at 6/10, while the AS5 is more comfortable than average at 5.5/10.

Having said that the mattress’s firmness will be dependent on your height and weight. On the one hand, these mattresses may feel firmer when you are able to press more deeply into the mattress and get to the support layers if are a heavier person. If you’re an overweight person it is possible the five mattresses significantly soft.

 

Sleeping On The Amerisleep Mattresses


I spent a significant amount of time on all five mattresses, evaluating their sleeping positions in various ways. You can clearly see that each performed differently!

Amerisleep AS1

AS1

As one of the firmest mattresses in the Amerisleep series, the AS1 could be too firm for those who sleep on their backs. The support is great however there isn’t a comfort layer enough for our hips to fully sink into it. We were disappointed. If you sleep on your back, would like that your hips sink enough to ensure your spine remains in a neutral position while you sleep.

If we lie on our backs and sleep on our backs, we experience lots of pressure on our shoulders and hips due to the AS1. We’ll have a look at the soft variations in the coming moments and see how they alleviate tension.

The Amerisleep AS1 really shines while you sleep on your stomachs. People who sleep on their stomachs should have an appropriate mattress that offers the hips with support. When the hips are not properly supported, the spine may be forced out of its position. Amerisleep AS1 offers adequate spinal support, thus it shouldn’t pose a problem.

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Amerisleep AS2

AS2

Because the AS2 is less abrasive than the AS1, we get more comfort and support while sleeping in a back position. Our hips are properly bowed, and the top foam layers are pushing up into the lumbar region.

The AS2 isn’t firm enough to be used for sleeping on the side and we can drive over the mattress and feel bunched in our shoulders and hips. After some nights, we can see the cause of this discomfort and pain.

We can feel a decent support under our hips while resting on our stomachs in the Amerisleep AS2. However, if you only rest on your stomach then it is the Amerisleep AS1 is the best way to go.

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Amerisleep AS3

AS3

A mattress that is medium-firm like one like the Amerisleep AS3 is ideal for back sleepers. As a result, it’s no surprise to find that the AS3 is one of our top options for back sleepers. The Bio-Pur foam on top provides a bit of contouring to our contours while also holding us in the right position. It’s one of the greatest mattress for those who sleep on their backs among the Amerisleep types.

There isn’t much pressure on my shoulders and hips when I sleep on my side with the AS3. The Bio-Pur foam actually cushions our joints, unlike the previous experiences we had using AS1 or AS2.

In our belly The Bio-Pur foam isn’t doing us any good. When it comes to compression reduction it’s amazing but we’re not receiving enough support for our hips.

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Amerisleep AS4

AS4

We’re now in the realm of a mattress that is soft. Because the AS4 mattress has been rated as Amerisleep’s 2nd most flexible, we’re experiencing a loss of support when we lie in a back position. Lumbar support is not as strong and we’re sinking into the mattress a little.

It’s true that the Amerisleep AS4 mattress performs best when placed on its side. The mattress is sinking due to the huge 4-inch Bio-Pur foam, as well as our hips and shoulders aren’t feeling much strain.

When it comes to stomach sleeping, a mattress that is suitable for side sleep is not the best choice. The Amerisleep AS5 is not an exception, and it doesn’t give us the assistance we need.

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Amerisleep AS5

Amerisleep Liberty Mattress AS4

There’s a layer of Active Flex in the Amerisleep AS5 which is their softest and most luxurious model. In the end, we feel more support for our head and shoulders while lying in our backs.

The AS5 is a great choice for side sleepers because it is the softest mattress. The burden of the world disappears as we sink to the soft comfort layers.

If you are sleeping on your stomach The A5 doesn’t offer enough support, even with it’s Active Flex foam. When we sleep in a back position, we prefer the Amerisleep AS1 and AS2.

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What Is the Feel of the Amerisleep Mattress?


The foam used in the majority of Amerisleep mattresses has a similar texture and feels firm and soft at the same at the same time. Despite the fact that we sink a little when we lie on the mattresses, we experience no problem moving about in any way. The Bio-Pur foam used in these five mattresses is different in thickness, and we sink more into the softer beds more. Check out our Amerisleep vs Tuft & Needle comparison to see how they stack up against another responsive mattress. Find out the way Amerisleep and GhostBed fare against a mattress made of latex in our Amerisleep and GhostBed comparison.

Average Weight Sleepers – 130 lbs- 230 lbs

The Amerisleep AS3 offers the most convenience and comfort for middle-weight back sleepers, but the AS2 is the best choice for those who need extra support. If you are in between both the AS4 as well as AS5 the weight categories, you ought to opt for the AS4. The Amerisleep AS1 is the firmest mattress for stomach sleepers within this weight range!

Heavyweight Sleepers – Over 230 lbs

It is the AS1 (or AS2 from Amerisleep is ideal for people who weigh more and want to sleep on their backs on a more firm mattress. The AS3, AS4, and AS5 might not be able to withstand their weight increase. The Amerisleep AS4 or AS5 will be suitable for those who weigh more and prefer to lie on their backs. This Amerisleep AS5 is a better option for those who weigh more than 300 pounds. Even if they plan to stomach sleep, the AS1 is the best choice however, their size might make it insufficient.

Lightweight Sleepers- Under 130 lbs

Lightweight back sleepers need a mattress that isn’t too firm, as this will stop your hips from sinking fully into the mattress. The best choice is to purchase one of the two Amerisleep AS3 models or the Amerisleep AS4 (if they want something more supple). Its AS3, AS4, and AS5 will provide the best pressure relief for side sleepers because of its light weight however, the AS5’s extra features might not be needed for these sleepers. They’ll get the support they need on either AS1 or AS2 when they’re sleeping.

 

Amerisleep Mattress Construction


There are certain similarities in mattresses made by Amerisleep mattresses, including the use of many of the identical materials. Concerning the comfort layers, though, you’ll notice some notable variations.

Amerisleep AS1

amerisleep-as1-construction

There is a permeable cover that covers the Amerisleep AS1 mattress, as it is on all Amerisleep mattresses. Bio-Pur Foam is a material that’s found on the top of every Amerisleep mattresses, covers 2 inches on the uppermost layer of comfort. A plant-based, breathable foam that’s more comfortable and responsive than traditional memory foam is what we’re calling this innovative material. It’s more environmentally friendly than other mattress foams since it’s open-celled. Bio-Core foam, which is eight inches in thickness, gives extra support for mattresses.

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Amerisleep AS2

amerisleep-as2-construction

In terms of size, the Amerisleep AS2 measures in at 12 inches, much like the other versions. As with the AS1 the mattress comes with two inches of Bio-Pur foam the top. Three inches of HIVE transition layer are also in the bottom layer to give more support and ease of use in different areas of the bed. Bio-Core foam is the material used in the support layer of 7 inches.

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Amerisleep AS3

amerisleep-as3-construction

There is an 3-” thick layer of Bio-Pur foam on the top of the Amerisleep’s comfort layer, and the mattress is 12″ tall. To top the AS3 you will get an inch additional. The HIVE transition layer is 2 inches thick instead of 3” thick. Then, a 7-inch thick Bio-Core foam layer completes this support layer.

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Amerisleep AS4

amerisleep-as4-mattress-construction

Apart from the fact that it is 12 inches high and 12 inches tall, it is also 12 inches tall. Amerisleep AS4 offers the same air-tight cover! Do you see patterns emerging? In comparison to the Amerisleep AS3, the Bio-Pur foam top layer is more thick (it is 4” in thickness!). The Bio-Pur foam top layer is just 1” thick. it is HIVE Transition foam, and seven inches of Bio-Core foam comprise the bottom of the mattress.

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Amerisleep AS5

amerisleep-as5-construction

The Amerisleep AS5 comes with an 8-inch thick cover and you’ll know what it is. There’s a good chance that it’s identical to other mattresses in the store. It is made of Bio-Pur and is sandwiched with layers of distinct AS5 foam. Soft and springy Active Flex is used in the creation of this 2-inch piece. All Amerisleep mattresses have a 7-inch Bio-Core foam as the base.

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Amerisleep Mattresses Size Options And Price


Twin Twin XL Full  Queen King Cal.King Split King
Amerisleep AS1 $899.00 $949.00 $1149.00 $1299.00 $1599.00 $1599.00 $1898.00
Amerisleep AS2 $1199.00 $1249.00 $1349.00 $1499.00 $1799.00 $1799.00 $2198.00
Amerisleep AS3 $1149.00 $1199.00 $1349.00 $1499.00 $1899.00 $1899.00 $2398.00
Amerisleep AS4 $1449.00 $1499.00 $1649.00 $1799.00 $2099.00 $2099.00 $2998.00
Amerisleep AS5 $1849.00 $1899.00 $2049.00 $2199.00 $2499.00 $2499.00 $3798.00
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Amerisleep Mattress Performance


Let’s look at how Amerisleep mattresses fare! Find out how they performed in terms of cooling, motion transfer, and edge support. Read on.

Sleeping Hot Or Cold

Based on our experience, Amerisleep mattresses don’t cause excessive heat while sleeping. Bio-Pur foam is specifically created so that the mattress remains cool which we have mentioned earlier. If you are sleeping in Amerisleep mattresses, you shouldn’t overheat like you do on other mattresses.

Mattresses made of latex and coils will help you stay cool at night if you have a major problem with overheating. Hybrid mattresses are excellent for sleepers who are hot since they are more air-conditioned.

Motion Transfer

Even though they are more responsive than the majority of mattresses mattress brands, they are not as responsive to motion and have a lower coefficient. As a result of the Bio-Pur foam’s motion isolation, if you sleep with someone else and you move around, it shouldn’t be disruptive to them.

The more dense Bio-Pur foam layers that are on the AS3 and AS4 make them ideal for couples seeking the most comfortable mattress.

Edge Support

Edge support is different among Amerisleep mattresses. The firmer models let us feel more comfortable sitting or sleeping on the edge of them (the AS1 and AS2). We felt less edge support particularly when we’re lying down, when we upgrade to the soft versions.

Durability

All of Amerisleep’s mattresses are made from high-density materials and are built to last. Therefore, we estimate that the mattresses will last 7 to 10 years, at the minimum.

Off-gassing

The Amerisleep mattresses do show some initial off-gassing. However, this is to be expected considering the fact that they’re delivered in the form of a box. If you purchase a mattress online that contains chemicals, the smell should disappear within 48 hours.

Noise

As we move around on Amerisleep mattresses, they don’t produce any noticeable noise. In the end, you won’t hear your spouse’s movements through the house at night.

Sex

Mattresses from Amerisleep are more flexible, which could be ideal for sex, as per this review. But, if you’re using AS4 or the AS4 or AS5 mattress, you could sink deeper and experience difficulties moving your partner around.

Warranty Info

All Amerisleep mattresses come with a 100-night sleep trial and a 20 year warranty.

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Amerisleep Hybrid Mattress Review


In addition to Amerisleep’s popular all-foam mattresses now makes hybrid options. The Amerisleep AS3 Hybrid model is a hybrid version of its all foam AS3 model and we’re here to discuss our experience with the AS3 Hybrid model.

Support layers are the main distinction between the two models. AS3 Hybrid has zoned pocketed coils, whereas AS3 all-foam is built on a polyfoam base. Even so, just like the AS3’s all-foam counterpart, the AS3 Hybrid features Bio-Pur foam on top.

Its AS3 Hybrid’s coils give it extra support over the AS3 mattress’s all foam counterpart. As a result, it could be a better option for people who weigh more and want additional assistance. It is also a better option for those who require additional support. AS3 Hybrid mattress has a higher ventilation because of the coils, which makes it a more comfortable mattress overall. When it comes to cost, it is the AS3 Hybrid mattress is going cost you around 200 dollars more expensive than AS3 foam mattress.

The Amerisleep foam mattresses are the most suitable choice for those on a tight budget or are in the lighter end in the range. If you’re heavier or need a mattress that is more permeable then the Amerisleep hybrid models are the ideal choice.

 

Summary Amerisleep Liberty Mattress AS4


Overall, I think that the Amerisleep mattresses are fantastic.

Many sleepers can pick the Amerisleep mattress that is best for them due to the numerous options available.

The mattresses are extremely cool to the touch, and offer great comfort and support for the cost.

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Amerisleep Mattress FAQs


Is Amerisleep a good mattress?

There’s no doubt that Amerisleep mattresses are fantastic. There are a variety of firmnesses offered, making it easy to find the right mattress for your needs. Also, they have breathable foams made from plants that can help regulate the body’s temperature.

How long do Amerisleep mattresses last?

Your weight and how well you care for your mattress determines how long the mattress will last. If you’re looking for a long-lasting mattress, go to Amerisleep mattresses.

Can you flip an Amerisleep mattress?

An Amerisleep mattress cannot be flipped because the layers are made for placement in a specific way. In general, the top layer should be the most comfortable, while the bottom layer should be most uncomfortable. Amerisleep Liberty Mattress AS4