✔️Customer Rating: 4.7/5 | |
✔️MA Customer Experience Score: 8.7/10 | |
✔️Type: Memory Foam | |
✔️Firmness: Medium-Soft | |
✔️Free Shipping & Returns | |
✔️100-Night Sleep Trial | |
✔️20-Year Warranty |
Holiday Sale: Get 30% off + 2 free pillows
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✔️Customer Rating: 4.7/5 | |
✔️MA Customer Experience Score: 8.7/10 | |
✔️Type: Memory Foam | |
✔️Firmness: Medium-Soft | |
✔️Free Shipping & Returns | |
✔️100-Night Sleep Trial | |
✔️20-Year Warranty |
Holiday Sale: Get 30% off + 2 free pillows
Our impression: The Amerisleep AS4 mattress is a medium-soft mattress offered by Amerisleep. This bed is great for side sleepers and those who tend to sleep hot. Its foam layers and breathable cover are conducive for air flow, pain relief, and blood circulation. Get ready for a healthy night’s sleep!
AS4 is best for: |
AS4 may not be best for: |
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The Amerisleep AS4 mattress is one of the softer mattresses from the series of memory foam beds by Amerisleep. It’s built with three layers of memory foam that are softer and more cooling than the AS1, AS2, and AS3 mattresses.
To learn more about this bed, keep reading our in-depth Amerisleep AS4 mattress review.
We’re anxious to get our hands on the AS4 in our lab. Until then, we’ve created a customer experience score that analyzes the purchase process of Amerisleep.
Mattress Advisor Test | Score (Out of 10) |
Shipping | 10 |
Trial Period | 9 |
Return Policy | 10 |
Warranty | 10 |
Set-Up | Pending |
Motion Transfer | Pending |
Edge Support | Pending |
Pressure Relief | Pending |
Spine Alignment | Pending |
Responsiveness | Pending |
Cooling | Pending |
Durability | Pending |
Customer Service | 9 |
Social Impact | 4 |
*Stay tuned for the official Mattress Advisor score of the AS4 mattress.*
The medium firmness level works best for side sleepers as it is the best option for their spinal alignment. Combination sleepers should enjoy the AS4’s responsiveness. Some back sleepers will sleep well above the soft, contouring layers, but we tend to recommend at least medium firmness. But, us stomach sleepers are in for trouble.
While sleeping on your stomach, it is necessary to have a firmer bed that will keep the lower back aligned with the rest of your body. Stomach sleeper should look for a mattress with a firmness level that is a 6/10 or above.
There are a couple features that make AS4 cooler than your average memory foam mattress. Unlike a traditional all-foam mattress, AS4 is made with a plant-based foam that has preferrations that allows airflow to circulate rather than get stuck, promoting breathability.
That being said, the AS4 will not sleep as cool as an innerspring bed or a mattress made with latex foam.
The AS4 has a weight limit of 800 pounds per side on a queen-size mattress; that’s up to 400 lbs. Per side. This is enough to support most body types and shapes. We recommend that heavier sleepers chose a hybrid mattress, however, for better support.
Amerisleep recommends a flat surface for the AS4. You can use a flat or slatted frame, box spring with plywood, adjustable base or even set it on the floor.
The foam layers inside the Amerisleep AS4 are CertiPUR-US certified described as they appear from top to bottom:
Size |
Dimensions | Weight | Price* |
Twin | 38” x 74” x 12” | 56 lbs. | $1399 |
Twin XL | 38” x 80” x 12” | 62 lbs. | $1449 |
Full | 54” x 75” x 12” | 79 lbs. | $1549 |
Queen | 60” x 80” x 12” | 94 lbs. | $1699 |
King | 76” x 80” x 12” | 118 lbs. | $1899 |
California King | 72” x 84” x 12” | 119 lbs. |
$1899 |
*Prices listed are standard without sales or Mattress Advisor exclusive discounts. Check price using the button below for the best deals on the AS4 mattress.
Policy | Details |
Delivery | Free shipping |
Trial Period | 100 days |
Warranty | 20-year limited warranty |
Return Policy | Free returns |
Shipping and delivery is free with Amerisleep. It takes anywhere from 3-7 business days for your mattress to ship, and then another 7 business days until it is delivered to your door. Your mattress will arrive in a box via FedEx and you do not have to sign for your package.
The AS4 comes with a 100-night trial period, which means once you receive your AS4 mattress, you have 100 nights to decide if it’s right for you. If you decide to return it, you can exchange it for another model or return it for a full refund. Remember to try it out for 30 nights before deciding to part ways as it takes some time to fully adjust to a new mattress.
Your 10 year warranty covers indentations more than three-quarters deep and other physical defects. The first 10 years offer full replacement, and the next 10 years are prorated. To file a claim, call or email customer service.
With a 9/10 in our customer service test, Amerisleep has a pretty kick butt customer care team. You can live chat with a representative on their website, call 1-800-500-4233, or email cs@amerisleep.com. Their hours are 9 a.m. – 6 p.m. (MST) on weekdays.
To return your AS4, you must do so after 30 nights (the break-in period) but before your 100-night trial is up. If you decide the AS4 isn’t the best mattress for you, simply contact customer service, and they will have a team come and retrieve your bed for recycling. AFter this process, you should receive your full refund.
Read More: Amerisleep Mattress Return Policy Break Down
See what actual customers have to say about the Amerisleep AS4 mattress.
Time to decide if the AS4 is for you or if you should keep on searching. We think you’ll like this mattress if you sleep on your side, enjoy sinking into your mattress, or find yourself sleeping in multiple positions.
AS4 may not be the bed for you if you sleep on your stomach or if you’re looking for a value bed. If this sounds like you, we recommend the Bear mattress. It’s medium firmness and price under $1,000 makes it a good choice for your needs.
There are 5 memory foam Amerisleep models and the AS4 is plush, but not the most plush. Let’s see how each Amerisleep bed compares:
Read our full Amerisleep Mattress Reviews here.
Still shopping around? See how the AS4 compares to your other options with our comparison tool.
Compare the AS4Amerisleep does have a few select retail stores where you can see the mattress for yourself before making your purchase. (Right now, they’re only in Arizona.) But luckily, you have 100 nights to try the AS4 mattress in your home risk-free with your trial period.
The removable cover on Amerisleep mattresses are easily washable for normal cleaning issues like perspiration and odor removal.
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