Amerisleep AS3 vs Casper Dream
Detailed side-by-side comparison — pricing, specs, performance ratings, and our pick.
| Feature | Amerisleep AS3 | Casper Dream |
|---|---|---|
| Overview | ||
Type | Memory Foam | Hybrid |
Firmness 1 = softest, 10 = firmest | 5.5 / 10 | 5.5 / 10 |
Queen Price Current / sale price | $1,749 | $1,325 |
Trial Period Return window | 100 nights | 100 nights |
Warranty | 20 years | 10 years |
| Performance Ratings | ||
Cooling Hot sleepers | 8/10 | Good |
Motion Isolation Partners, light sleepers | 9/10 | Good |
Pressure Relief Hip/shoulder pain | 8/10 | Good |
Edge Support Sit/sleep near edge | 6/10 | Good |
Durability Long-term performance | 5/10 | Good |
| 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 | Affirm, Klarna | Affirm |
| Materials & Safety | ||
Certifications Organic / non-toxic | CertiPUR-US | CertiPUR-US |
Off-Gassing New-foam smell concern | CertiPUR-US certified foam | CertiPUR-US certified foam |
| Best For | ||
Ideal sleeper profiles |
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| Actions | ||
Need Help Deciding?
For most sleepers, we recommend the Casper Dream over the Amerisleep AS3. It scores higher in cooling, motion isolation, pressure relief and offers strong overall value at $1,325 (vs $1,749). The Amerisleep AS3 is the better choice only if you have a strong preference for that brand's specific feel or design.
Amerisleep AS3 vs Casper Dream: What Actually Differs
The Amerisleep AS3 is a memory foam build, while the Casper Dream is a hybrid — that single difference drives most of the cooling, motion, and feel decisions below. Profile-wise they're almost identical — the Amerisleep AS3 measures 12" and the Casper Dream measures 12", so neither will dictate your sheet depth or bed-frame compatibility. Both sit at roughly 5.5/10 on the firmness scale — a medium feel — so neither one is the answer if you need a dramatically different support level. On a Queen, the Casper Dream runs $1,325 versus $1,749 for the Amerisleep AS3 — roughly $424 (24%) 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 (5.5/10 vs 5.5/10) — either works.
Effectively the same firmness (5.5/10 vs 5.5/10). 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? |
|---|---|---|---|
| Casper Dream | $1,895 | $1,325 | Save $570 |
| Amerisleep AS3 | $1,749 | $1,749 | At MSRP |
The Casper Dream is the budget choice at $1,325 — $424 less than the Amerisleep AS3 ($1,749). That's a 24% gap, which is worth weighing against the spec differences before deciding which delivers better value for your situation. Only the Casper Dream is on sale right now.
Amerisleep AS3
Strengths
- ✓Medium feel fits a broad sleeper range
- ✓Strong motion isolation for couples
- ✓HIVE zoning gives extra shoulder and hip pressure relief
Considerations
- —Current page payload did not publish per-size sale prices, so sale fields are intentionally NULL
- —All-foam edge support is more modest than AS3 Hybrid
- —Shoppers who want a springy feel may prefer the hybrid
Casper Dream
Strengths
- ✓Zoned memory foam over encased springs
- ✓More bounce and edge support than The One
- ✓QuickCool cover upgrade path is published on the PDP
Considerations
- —Standard Cozy Cover is not the cooling upgrade
- —Medium feel may be less plush than Dream Max
- —Higher Queen price than Casper's foam models
Who Should Buy Which?
Choose the Amerisleep AS3 if you…
- →Shoppers who prioritize brand reputation and style
Choose the Casper Dream if you…
- →Hot sleepers
- →Couples / light sleepers
- →Side sleepers / pressure relief
- →Sitting near the edge