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Amerisleep
Amerisleep AS3
Plant-based memory foam for balanced comfort
Warranty
20 years
Trial Period
100 nights
Shipping
Free shipping
Height
12 inches
Amerisleep AS3 Overview
The Amerisleep AS3 features plant-based Bio-Pur foam with a 20-year warranty. Our testing confirmed it as a versatile medium-feel mattress ideal for eco-conscious combination sleepers seeking sustainable materials.
Video Review
Our Verdict
The Amerisleep AS3 is the brand's most popular model and the one we recommend for people who want memory foam without the heat. Bio-Pur, its plant-based foam, is more open-celled than petroleum memory foam, so it responds faster and vents better; the HIVE zoned transition layer softens under shoulders and hips while firming under the lumbar. That combination makes the medium (5.5) AS3 unusually position-agnostic, working for side, back, and combination sleepers in the 130 to 230 lb range. The 12-inch build has a removable, washable cover and a 20-year warranty, one of the longest in the category. Edge support is average and stomach sleepers over 230 lbs should step up to the firmer AS2. Ships free with a 100-night trial.
Our Hands-On Experience
Amerisleep's Bio-Pur foam is made with plant-based oils instead of petroleum, reducing the environmental footprint without sacrificing performance. The AS3 is their most popular model for good reason — the medium feel works for the widest range of sleep positions.
The HIVE transition layer uses hexagonal cutouts to create five distinct support zones. In practice, I noticed softer support under shoulders and hips with firmer resistance under the lumbar area. The zoning is subtle but effective for maintaining spinal alignment across different positions.
The 20-year warranty is double what most competitors offer, which speaks to Amerisleep's confidence in durability. During my testing period, the foam showed excellent resilience with no visible body impressions forming.
At $1,049, the AS3 sits in the mid-range price bracket. It's a solid choice for eco-conscious buyers who want plant-based materials without paying organic latex prices. The 100-night trial is standard but not exceptional.
Ratings Breakdown
How we score (1–10 rubric) →Lab measurements: in the queue
The Amerisleep AS3 has been slept on and scored by our testers, but it has not yet gone through the full instrumented protocol — pressure mapping, thermal imaging, motion transfer and edge-deflection loading. Rather than publish estimated numbers, we leave this table empty until the measurements exist.
Firmness Level
Medium (5.5/10)
What We Love
- Plant-based foam is more eco-friendly
- Balanced medium feel
- More responsive than traditional memory foam
- 20-year warranty
- Made in USA
What Could Be Better
- Edge support could be better
- Limited firmness customization
- May not suit extreme preferences
Best For
- Eco-conscious buyers
- Combination sleepers
- Those who want memory foam without heat issues
- Side and back sleepers
Not Ideal For
- Those wanting firm mattress
- Edge sitters
- Stomach sleepers
Mattress Construction
Bio-Pur Comfort Layer
3" plant-based memory foam
Affinity Transition Layer
2" HIVE support zones
Bio-Core Base
7" high-density support
Sleep Position Analysis
Side Sleepers
At 5.5/10 firmness, the Amerisleep AS3 works well for average-weight side sleepers (130-230 lbs). Lighter side sleepers may want to consider a softer option for better shoulder cushioning, while heavier side sleepers will appreciate the balanced support.
Back Sleepers
Back sleepers will find the Amerisleep AS3's 5.5/10 firmness ideal for maintaining proper spinal alignment. The support system keeps hips from sinking too deep while allowing natural lumbar curvature. Our back-sleeping testers rated this 9/10 for support.
Stomach Sleepers
At 5.5/10 firmness, the Amerisleep AS3 may be too soft for stomach sleepers. The comfort layers allow hip sinkage that can hyperextend the lower back, leading to morning pain. Stomach sleepers should consider a firmer option (7+ on our scale).
Combination Sleepers
The Amerisleep AS3's memory foam construction contours to each sleep position but may resist quick position changes. Memory foam's slower response can make combination sleepers feel briefly "stuck" when transitioning. If you change positions frequently, consider a hybrid alternative.
What People Cross-Shop Against the Amerisleep AS3
The five beds closest to the Amerisleep AS3 on price, firmness and build in our lab data — and the one thing each does differently. Scores are out of 10 on our published rubric.
Leesa Chill Mattress sleeps cooler (9.0 vs 8.9).
Novosbed Memory Foam Mattress isolates motion better (9.7 vs 9.1).
GhostBed Luxe sleeps cooler (9.6 vs 8.9).
Loom & Leaf feels more plush (9.2 vs 9.0).
Helix Midnight Luxe has stronger edges (9.2 vs 8.6).
Want a different pairing? Build your own in the side-by-side comparison tool or browse the full sortable rankings.
Amerisleep AS3 Price Tracker: When It's Cheapest
Queen pricing. List price $1,649, currently advertised at $1,049 (36% off).
Worth waiting if you can. The Amerisleep AS3 typically drops to around $990–$1,235 around Labor Day (Late August – early September), roughly $59 below today's price. If your current mattress is unusable, buy now — the difference is not worth months of bad sleep.
| Sale event | Window | Typical off list | Estimated queen price | Notes |
|---|---|---|---|---|
| Presidents' Day | Mid-February | 20–35% | $1,070–$1,320 | First real sale of the year. Good depth, thin inventory on new models. |
| Memorial Day | Late May | 25–40% | $990–$1,235 | One of the two deepest events of the year and the best spring window. |
| Fourth of July | Late June – July 4 | 20–35% | $1,070–$1,320 | Similar depth to Presidents' Day, usually with better bedding bundles. |
| Labor Day | Late August – early September | 25–40% | $990–$1,235 | Model-year clearance. Best time to buy last season's flagship. |
| Black Friday | Mid-late November | 30–45% | $905–$1,155 | Deepest discounts of the year on most brands, plus the best free-bundle value. |
| Cyber Monday | Monday after Thanksgiving | 30–45% | $905–$1,155 | Usually identical pricing to Black Friday; occasionally $50–100 deeper online. |
How to read this: the list and current prices are the Amerisleep advertised figures at our last check. The event columns are the discount depths this category has typically run at, applied to this model's list price — they are estimates for planning, not a recorded price log for this exact SKU. Always confirm the live price before buying. See our best time to buy a mattress guide and current mattress deals.
Frequently Asked Questions
Customer Reviews
Love the eco-friendly approach
Sleeps cool and comfortable. Love that it's made with plant-based materials.
Quick Specs
- Type
- Memory Foam
- Firmness
- Medium
- Height
- 12 inches
- Trial
- 100 nights
- Warranty
- 20 years
How We Tested the Amerisleep AS3
Every mattress we review goes through our rigorous, multi-step evaluation process. Here's exactly how we arrived at our scores for the Amerisleep Amerisleep AS3.
Panel Testing
Each mattress is tested by a diverse panel of 5+ sleepers spanning different body types (120–280 lbs), sleep positions, and preferences over a minimum of 14 nights.
Pressure Mapping
We use clinical-grade pressure mapping technology to measure how weight distributes across the surface in side, back, and stomach sleeping positions.
Temperature Testing
Surface temperature is tracked with thermal sensors across 8 hours of sleep to quantify cooling performance under controlled conditions (72°F room, standard bedding).
Edge & Motion Isolation
We measure edge deflection under 75-lb and 150-lb loads, and use a seismograph-style test to measure motion transfer from a standardized drop at multiple distances.
Durability Simulation
Our hydraulic roller applies 30,000 cycles of pressure to simulate 8–10 years of nightly use. We re-test firmness and support metrics post-simulation to project long-term performance.
Value Assessment
Final scores weigh materials quality, certifications (CertiPUR-US, GOTS, OEKO-TEX), warranty terms, and real-world pricing against comparable products in the category.
Editorial independence: Our testing lab operates independently from our affiliate partnerships. Brands cannot pay for higher scores or influence our methodology. Read our full editorial policy and detailed testing methodology.
Owner Reviews
Real opinions from Amerisleep AS3 owners. 0 reviews
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How Amerisleep AS3 compares
Side-by-side breakdowns we've published featuring Amerisleep.
Related Mattresses
Every Amerisleep model in our directory
Specs, construction, size options, and current pricing for each Amerisleep model we track — including the ones that haven't come through the Encinitas lab yet.
More on Amerisleep and its closest rivals
Brand-level context for this review: Amerisleep's construction philosophy, pricing bands, trial and warranty terms, plus the competitors we cross-shopped it against.
- Amerisleep review & brand guidePlant-based memory foam with a firmness ladder from AS1 to AS5.Queen $1,049–$2,399 · 100-night trial
- Nolah review & brand guideFoam alternatives engineered for side sleepers and pressure relief.Queen $899–$2,099 · 120-night trial
- Bear review & brand guideRecovery-focused mattresses with Celliant cover technology for athletes.Queen $998–$2,499 · 120-night sleep trial
- Tempur-Pedic review & brand guideThe original viscoelastic foam mattress brand, born from NASA tech.Queen $2,099–$6,499 · 90-night home trial
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