Amerisleep AS3 mattress review was conducted because it is one of the most popular mattresses in the Amerisleep lineup — designed as a balanced, all-purpose hybrid that aims to provide comfort, support, and temperature regulation for a wide range of sleepers. With a unique plant-based memory foam layer and zoned support system, the AS3 seeks to deliver pressure relief without excessive sink, making it especially appealing for combination sleepers.
In this review, we break down how the Amerisleep AS3 performs in comfort, firmness, cooling, support, motion isolation, edge support, durability, and overall value, so you can confidently decide whether it’s the right mattress for you.
🛏️ Amerisleep AS3 Mattress Review: Quick Summary
- Best for: Side sleepers, combination sleepers, back sleepers
- Not ideal for: Strict stomach sleepers who need extra firmness
- Firmness: Medium (about 5.5–6/10)
- Mattress type: Hybrid (foam + coil)
- Sleep positions: Side, back, combo
- Trial & warranty: 100-night trial, 15-year warranty
🧠 Amerisleep AS3 Construction
The Amerisleep AS3 features a multi-layer design that combines foam comfort with a responsive coil base:
How We Test Mattresses
Our reviews are based on firsthand, hands-on testing and real-world sleep experience. We evaluate mattresses using consistent criteria, including pressure relief, spinal alignment, motion isolation, temperature regulation, and durability. We do not use any fancy gimmicks, proprietary scoring systems, or manufacturer-provided ratings. Each mattress is tested the same way so comparisons are fair, transparent, and based on actual performance, helping readers make informed, trustworthy buying decisions. Read our full mattress testing methodology!
- Bio-based memory foam comfort layer – adapts to the body without feeling like traditional slow memory foam
- Transition foam with zoned support – softer at the shoulders and firmer around the hips
- Pocketed coil support core – for lift, airflow, and responsiveness
- Quilted performance cover – increases breathability
This combination creates a balanced feel that’s not too soft and not too firm — an ideal middle ground for many sleepers.
💤 Amerisleep AS3 Mattress Review: Comfort & Feel
The AS3 delivers a balanced, adaptive feel that contours the body without excessive sink. You’ll notice:
- Gentle pressure relief at shoulders and hips
- A slightly buoyant response (easier to move on than slow memory foam)
- Comfortable transition from comfort layer to support core
Sleepers often describe the feel as “adaptive, not enveloping,” which makes it easy to change positions — a big plus for combination sleepers.
🧍 Amerisleep AS3 Mattress Review: Firmness & Support
The AS3 is rated around 5.5–6 out of 10 on the firmness scale:
- Side sleepers: Excellent pressure relief with enough lift
- Back sleepers: Good spinal alignment and moderate support
- Combination sleepers: Easy repositioning and balanced feel
- Stomach sleepers: May feel slightly too soft, depending on body weight
The zoned support layer helps maintain alignment without a “floating” sensation, which is common on less supportive foam beds.
🌬️ Amerisleep AS3 Mattress Review: Cooling & Temperature Regulation
Cooling is one of the Amerisleep AS3’s strengths thanks to:
- Breathable quilted cover
- Open coil core promotes airflow
- Bio-based memory foam that sleeps warmer than latex but cooler than traditional dense memory foam
This makes the AS3 a good option for sleepers who tend to run warm, though very hot sleepers may still benefit from more advanced cooling materials.
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🔁 Amerisleep AS3 Mattress Review: Motion Isolation (Couples)
Thanks to the foam comfort layers, the AS3 isolates motion well:
- Minimal disturbance when partners move
- Slight spring response from coils, but nothing disruptive
- Good for couples who wake easily
Winner for motion isolation: Strong performance for a hybrid.
🔧 Amerisleep AS3 Mattress Review:Edge Support
The pocketed coil system provides better edge support than all-foam beds:
- Good stability when sitting near edges
- Minimal collapse at the perimeter
- Reassuring support when sleeping near the edge
This is a noticeable upgrade over traditional foam mattresses.
🪶 Durability & Longevity
Amerisleep uses quality materials, and the 15-year warranty reflects confidence in durability. The coil core resists sagging over time, and the zoned foam adds structural resilience. While all mattresses wear differently based on sleep habits, average-weight sleepers should expect strong long-term performance.
🧾 Trial, Warranty & Policies
- 100-night sleep trial
- 15-year limited warranty (longer than many competitors)
- Free returns during trial
The extended warranty gives buyers extra peace of mind.
✅ Pros & Cons
Pros
- Balanced comfort for a wide range of sleepers
- Good airflow and cooling for a hybrid
- Zoned support improves spinal alignment
- Strong edge support
- Excellent motion isolation
Cons
- May not be firm enough for strict stomach sleepers
- Slightly slower response than latex hybrids
- Price higher than basic foam/hybrid options
🧠 Final Verdict
The Amerisleep AS3 stands out as a versatile, balanced hybrid that appeals to side, back, and combination sleepers. It expertly blends comfort and support, making it especially suitable for those who want pressure relief without feeling “trapped” in slow memory foam. Its cooling performance, zoned support, and edge stability are strong for a mattress in this class.
If you’re a warmer sleeper or change positions frequently, the AS3 deserves a close look. However, if you need a firmer, more lifted feel (especially for stomach sleeping), you may want to consider firmer options like a firm hybrid or a more supportive innerspring design.
Overall, the AS3 is a well-rounded, reliable mattress with broad appeal and excellent build quality.
Check Pricing Direct From Amerisleep.
🔗 Helpful Next Steps
- Compare it in our Amerisleep AS3 vs AS5 comparison
- Check our Best Mattresses Buyer’s Guide