Amerisleep AS3 vs Serta iComfort Standard 12" Medium
Detailed side-by-side comparison — pricing, specs, performance ratings, and our pick.
| Feature | Amerisleep AS3 | Serta iComfort Standard 12" Medium |
|---|---|---|
| Overview | ||
Type | Memory Foam | Memory Foam |
Firmness 1 = softest, 10 = firmest | 5.5 / 10 | 6 / 10 |
Queen Price Current / sale price | $1,749 | $1,599 |
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 | Excellent |
Pressure Relief Hip/shoulder pain | 8/10 | Good |
Edge Support Sit/sleep near edge | 6/10 | Fair |
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 Serta iComfort Standard 12" Medium over the Amerisleep AS3. It scores higher in cooling, motion isolation, pressure relief and delivers stronger overall value. 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 Serta iComfort Standard 12" Medium: What Actually Differs
Both the Amerisleep AS3 and Serta iComfort Standard 12" Medium are memory foam mattresses, so the real differences come down to firmness tuning, performance ratings, and price rather than construction type. Profile-wise they're almost identical — the Amerisleep AS3 measures 12" and the Serta iComfort Standard 12" Medium 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-firm feel — so neither one is the answer if you need a dramatically different support level. On a Queen, the Serta iComfort Standard 12" Medium runs $1,599 versus $1,749 for the Amerisleep AS3 — roughly $150 (9%) 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.
Firmness of 6/10 is closer to the medium-firm sweet spot back sleepers need for lumbar support (vs 5.5/10).
Firmer at 6/10 vs 5.5/10 — stomach sleepers need the extra support to keep the pelvis from sinking and arching the lower back.
Cooling rating not available for one or both mattresses — spec not available.
Durability and edge-support ratings not available — spec not available.
Softer at 5.5/10 vs 6/10 — lighter sleepers compress less, so they typically need the softer of two options to get proper contouring.
Motion-isolation data not available for one or both mattresses — spec not available.
Price Comparison (Queen)
| Mattress | MSRP | Current | Sale? |
|---|---|---|---|
| Serta iComfort Standard 12" Medium | $1,599 | $1,599 | At MSRP |
| Amerisleep AS3 | $1,749 | $1,749 | At MSRP |
The Serta iComfort Standard 12" Medium is the budget choice at $1,599 — $150 less than the Amerisleep AS3 ($1,749). That's a 9% gap, which is worth weighing against the spec differences before deciding which delivers better value for your situation.
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
Serta iComfort Standard 12" Medium
Strengths
- ✓Current iComfort Standard medium profile with manufacturer-published 12-inch height
- ✓Graphite-infused Perfect Conform memory foam is designed to redistribute heat
- ✓All-foam construction is designed to minimize partner motion
- ✓Free shipping and returns are published on the current Serta PDP
Considerations
- —Twin and split sizes are not sold on the checked Serta PDP
- —Foam edge support is less robust than Serta's coil and hybrid lines
- —Most orders arrive through scheduled delivery rather than immediate parcel delivery
Who Should Buy Which?
Choose the Amerisleep AS3 if you…
- →Shoppers who prioritize brand reputation and style
Choose the Serta iComfort Standard 12" Medium if you…
- →Hot sleepers
- →Couples / light sleepers
- →Side sleepers / pressure relief
- →Budget-conscious shoppers