Amerisleep AS4 vs Amerisleep AS5
Detailed side-by-side comparison — pricing, specs, performance ratings, and our pick.
| Feature | Amerisleep AS4 | Amerisleep AS5 |
|---|---|---|
| Overview | ||
Type | foam | Memory Foam |
Firmness 1 = softest, 10 = firmest | 3.5 / 10 | 3.5 / 10 |
Queen Price Current / sale price | $1,149 | $1,849 |
Trial Period Return window | 100 nights | 100 nights |
Warranty | 20 years | 20 years |
| Performance Ratings | ||
Cooling Hot sleepers | Average | 8/10 |
Motion Isolation Partners, light sleepers | Excellent | 9/10 |
Pressure Relief Hip/shoulder pain | Excellent | 9/10 |
Edge Support Sit/sleep near edge | Average | 6/10 |
Durability Long-term performance | Good | 5/10 |
| Compatibility & Features | ||
Adjustable Base Head/foot elevation | ✓ Yes | ✓ Yes |
Split King Support Two Twin XL per couple | ✓ Yes | ✓ Yes |
Dual Comfort Zones Different firmness per side | — | — |
Smart Features App, sensors, auto-adjust | — | — |
Financing | Available | Affirm, Klarna |
| Materials & Safety | ||
Certifications Organic / non-toxic | None listed | CertiPUR-US |
Off-Gassing New-foam smell concern | — | CertiPUR-US certified foam |
| Best For | ||
Ideal sleeper profiles |
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| Actions | ||
Need Help Deciding?
For most sleepers, we recommend the Amerisleep AS4 over the Amerisleep AS5. It scores higher in cooling, motion isolation, pressure relief and delivers stronger overall value. The Amerisleep AS5 is the better choice only if you have a strong preference for that brand's specific feel or design.
Amerisleep AS4 vs Amerisleep AS5: What Actually Differs
The Amerisleep AS4 is a foam build, while the Amerisleep AS5 is a memory foam (memory-foam vs plant-based_memory_foam) — that single difference drives most of the cooling, motion, and feel decisions below. The Amerisleep AS5 stands 14" tall versus 12" for the Amerisleep AS4 — a 2.0" gap that matters if you need deep-pocket sheets or are pairing with an adjustable base. Both sit at roughly 3.5/10 on the firmness scale — a medium-soft feel — so neither one is the answer if you need a dramatically different support level. On a Queen, the Amerisleep AS4 runs $1,149 versus $1,849 for the Amerisleep AS5 — roughly $700 (38%) less, which is enough to factor into the decision unless the pricier model wins clearly on the specs you care about.
Which Is Better For Your Sleep Style?
Pressure-relief data not available for one or both mattresses — spec not available.
Both fall in the medium-firm zone back sleepers prefer (3.5/10 vs 3.5/10) — either works.
Effectively the same firmness (3.5/10 vs 3.5/10). Stomach sleepers generally want 7+/10 — neither is ideal if both rate lower.
Cooling rating not available for one or both mattresses — spec not available.
Durability and edge-support ratings not available — spec not available.
Both have similar firmness and pressure-relief profile — either works.
Motion-isolation data not available for one or both mattresses — spec not available.
Price Comparison (Queen)
| Mattress | MSRP | Current | Sale? |
|---|---|---|---|
| Amerisleep AS4 | $1,649 | $1,149 | Save $500 |
| Amerisleep AS5 | $2,349 | $1,849 | Save $500 |
The Amerisleep AS4 is the budget choice at $1,149 — $700 less than the Amerisleep AS5 ($1,849). That's a 38% gap, which is worth weighing against the spec differences before deciding which delivers better value for your situation. Both are currently below MSRP.
Amerisleep AS4
Strengths
- ✓Medium-soft feel excellent for side sleepers who need shoulder and hip relief
- ✓HIVE® hex cutouts in the base layer provide zoned support
- ✓Plant-based Bio-Pur foam more breathable than traditional memory foam
Considerations
- —Too soft for stomach sleepers — spinal alignment risk
- —All-foam — less breathable than AS4 hybrid (when available)
Amerisleep AS5
Strengths
- ✓Deepest pressure relief in the foam AS lineup
- ✓Active Flex adds lift so the soft feel does not collapse as easily
- ✓Strong motion isolation for couples
Considerations
- —Soft feel is less aligned with strict stomach sleepers
- —All-foam edges are less reinforced than AS5 Hybrid
- —Tall 14-inch profile may need deeper-pocket sheets
Who Should Buy Which?
Choose the Amerisleep AS4 if you…
- →Hot sleepers
- →Couples / light sleepers
- →Side sleepers / pressure relief
- →Sitting near the edge