Amerisleep As3 Vs As4: Ultimate Comfort & Support Showdown
Choosing the right mattress can feel overwhelming, especially when you come across models like the Amerisleep AS3 and AS4. You want a mattress that supports your body perfectly, helps you sleep deeply, and fits your lifestyle.
But how do you decide between these two popular options? This comparison will break down everything you need to know about the Amerisleep AS3 and AS4, so you can make the best choice for your comfort and rest. Keep reading to discover which mattress matches your sleep style and helps you wake up refreshed every morning.
Amerisleep As3 Features
The Amerisleep AS3 mattress offers a great balance of comfort and support. It suits many sleeping styles and is popular for its thoughtful design. The features of this mattress make it stand out in the crowded market.
Each feature works together to improve your sleep quality. Let’s explore what makes the AS3 mattress special.
Material Composition
The AS3 uses a mix of memory foam and support foam. The top layer is made of Bio-Pur foam. This foam is plant-based and eco-friendly. It feels soft and adapts to your body shape. Below this is a firmer support foam that keeps the mattress stable. The combination offers pressure relief and good durability.
Firmness Level
This mattress has a medium firmness. It is firm enough to keep your spine aligned. Yet, it is soft enough to cushion your shoulders and hips. This level suits side and back sleepers well. It provides comfort without feeling too soft or too hard.
Cooling Technology
Amerisleep added special cooling features to the AS3. The Bio-Pur foam has an open cell structure. This design allows air to flow freely. It helps keep the mattress cool at night. The cover is made from breathable fabric. This also helps reduce heat buildup during sleep.
Motion Isolation
The AS3 absorbs movement well. Its foam layers reduce motion transfer between sleepers. This means you won’t feel your partner move at night. It is a good choice for couples who share a bed. You can sleep peacefully without disturbances.

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Amerisleep As4 Features
The Amerisleep AS4 mattress offers a balance of comfort and support. It suits many sleeping styles. Many find its features ideal for a good night’s rest.
Explore the key features of the Amerisleep AS4 to see why it stands out.
Material Composition
The AS4 uses plant-based memory foam. This foam feels soft and molds to your body. It also has high-density foam at the base for strong support. The materials are CertiPUR-US certified, meaning they are safe and free from harmful chemicals.
Firmness Level
The mattress has a medium firmness rating of 5 out of 10. It feels soft but offers enough support. This level suits side and back sleepers well. It helps keep your spine aligned all night.
Cooling Technology
The AS4 includes Bio-Pur foam, which helps with cooling. It allows air to flow and reduces heat build-up. The cover is made from breathable fabric. This keeps the mattress cool and comfortable throughout the night.
Motion Isolation
The memory foam layers absorb movement effectively. This reduces disturbance from a partner’s movements. It helps light sleepers stay undisturbed. Motion isolation is a strong feature of the AS4 mattress.
Comfort Comparison
The comfort of a mattress is key to a good night’s sleep. Amerisleep AS3 and AS4 offer different comfort levels. Each mattress suits different needs and preferences. This section compares their comfort features to help you decide.
Pressure Relief
The AS3 has a medium firmness that eases pressure points well. It uses memory foam that adapts to your body shape. This helps reduce pain in shoulders and hips. The AS4 is firmer but still soft enough for pressure relief. It supports heavier body parts without sinking too much. Both mattresses offer good pressure relief but feel different on the body.
Support For Different Sleep Positions
The AS3 works well for side and back sleepers. It cushions curves while keeping the spine aligned. The AS4 suits stomach and back sleepers who need firmer support. It prevents the body from sinking too deep. Both mattresses support different positions but target different sleepers. Choose based on how you sleep most nights.
Edge Support
The AS3 has moderate edge support that helps when sitting or sleeping near the edge. The foam compresses but stays stable. The AS4 offers stronger edge support. It feels firmer and holds shape better at the edges. This makes the AS4 better for people who use the whole mattress surface. Edge support varies but both offer good stability.
Durability And Build Quality
Durability and build quality are key factors when choosing between Amerisleep AS3 and AS4. Both models promise lasting comfort, but they differ in material strength and construction. Understanding these differences helps make a smart purchase.
Foam Density
The AS3 uses medium-density memory foam. It balances softness and support well. The AS4 features higher-density foam. This makes it feel firmer and more durable. Higher density usually means longer mattress life. Both mattresses resist sagging and wear over time.
Warranty And Trial Period
Amerisleep offers a 20-year warranty for both AS3 and AS4. This covers defects and significant sagging. The trial period is 100 nights for both models. This gives enough time to test comfort and durability at home. A strong warranty and trial show confidence in build quality.
Price And Value
The price and value of a mattress matter a lot for buyers. Choosing between Amerisleep AS3 and AS4 means thinking about what each offers for its cost. Both models aim to provide good comfort and support but at different price points. Understanding the cost and long-term value helps make the right choice.
Cost Breakdown
The Amerisleep AS3 costs less than the AS4. AS3 is a medium-firm mattress designed for most sleepers. It fits well in a moderate budget. The AS4 is softer and made for side sleepers. It has a higher price due to extra materials for softness.
Prices vary based on mattress size. Twin and full sizes cost less than queen and king. Shipping and taxes add to the total price. Amerisleep often has sales, which can lower costs.
Long-term Investment
Both mattresses offer good durability. Amerisleep uses quality foam that lasts years. A longer-lasting mattress saves money over time. The AS4’s softer layers may wear slightly faster than the AS3.
Comfort affects sleep quality and health. Better sleep improves daily life and energy. Choosing the right mattress feels like an investment in well-being. Spending a bit more on comfort can pay off in better rest.
Customer Feedback
Customer feedback offers a real look at how the Amerisleep AS3 and AS4 perform in everyday use. Reviews from buyers reveal what people like and dislike about these mattresses. This insight helps decide which mattress fits your needs best.
Positive Reviews
Many users praise the Amerisleep AS3 for its balanced comfort. It suits side and back sleepers well. The mattress feels soft but supportive. People say it helps reduce pressure on shoulders and hips. Buyers also like its cooling features, which keep them comfortable at night.
The AS4 gets high marks for its extra firmness. It supports heavier body types and stomach sleepers better. Customers feel it promotes good spinal alignment. Several reviews mention less back pain after switching to the AS4. Users appreciate the durable materials and quality build in both models.
Common Complaints
Some users find the AS3 too soft, especially those who prefer firm support. It may cause a sinking feeling for heavier sleepers. A few customers mention a slight off-gassing smell at first. This usually fades after a few days.
For the AS4, some people say it feels too firm or hard on pressure points. Side sleepers sometimes report discomfort on their shoulders and hips. A few reviews note the mattress is heavier and harder to move. These complaints help set realistic expectations for each mattress.
Choosing Between As3 And As4
Choosing between the Amerisleep AS3 and AS4 can feel tough. Both mattresses offer great comfort and support. Understanding who each mattress suits best can help you decide quickly. This guide breaks down the key differences and matches them with your needs.
Both mattresses use high-quality memory foam. Yet, their firmness and feel differ. These differences affect sleep quality for different types of sleepers. Knowing your sleep style and preferences makes picking easier.
Who Should Pick As3
The AS3 mattress is medium-firm. It works well for most sleep positions. Side sleepers find the AS3 gentle on shoulders and hips. It balances softness and support nicely.
People who weigh between 130 and 230 pounds often prefer the AS3. It offers enough pressure relief without feeling too soft. Those who want a cooler sleep experience like the breathable foam layers.
Sleepers who like a mix of plush and firm find the AS3 ideal. It adapts well to body curves but keeps the spine aligned. Couples who share a bed appreciate the motion isolation features.
Who Should Pick As4
The AS4 mattress feels firmer than the AS3. It suits back sleepers and stomach sleepers best. These sleepers need a mattress that keeps their hips and spine aligned.
People weighing over 230 pounds often choose the AS4. It provides strong support and helps prevent sinking too deep. The firmer surface also helps with back pain relief.
Those who prefer a firm and stable feel enjoy the AS4. It offers less sink but maintains comfort. Sleepers who want extra support without losing pressure relief find it a good fit.

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Frequently Asked Questions
What Are The Main Differences Between Amerisleep As3 And As4?
The AS3 is a medium-firm mattress, ideal for side sleepers. The AS4 is softer, designed for pressure relief and contouring. AS4 offers more plush comfort, while AS3 provides balanced support and responsiveness.
Which Mattress Is Better For Side Sleepers, As3 Or As4?
AS3 offers medium firmness, supporting side sleepers with moderate pressure relief. AS4 is softer, better for those needing extra cushioning on hips and shoulders. Side sleepers with sensitive joints may prefer AS4 for added comfort.
How Does The Durability Of As3 Compare To As4?
Both mattresses use high-quality, breathable foam for durability. AS3’s firmer foam tends to maintain shape longer under average weight. AS4’s softer layers may compress slightly faster but still provide lasting support.
Are Amerisleep As3 And As4 Suitable For Back Pain Relief?
Yes, both models support spinal alignment well. AS3 offers firmer support for back pain sufferers. AS4 provides softer pressure relief, ideal for those needing extra cushioning on sensitive areas.
Conclusion
Choosing between Amerisleep AS3 and AS4 depends on your sleep needs. AS3 suits those who want medium firmness and good support. AS4 is softer, ideal for side sleepers or those who prefer plush feel. Both mattresses offer quality materials and good motion isolation.
Think about your comfort preference and budget before deciding. Either option can help improve your sleep quality. Rest well, wake up refreshed. Simple choices lead to better nights.
