Amerisleep AS4 vs Nectar Premier
Detailed side-by-side comparison — pricing, specs, performance ratings, and our pick.
| Feature | Amerisleep AS4 | Nectar Premier |
|---|---|---|
| Overview | ||
Type | foam | Memory Foam |
Firmness 1 = softest, 10 = firmest | 3.5 / 10 | 6 / 10 |
Queen Price Current / sale price | $1,149 | $549 |
Trial Period Return window | 100 nights | 365 nights |
Warranty | 20 years | Lifetime |
| Performance Ratings | ||
Cooling Hot sleepers | Average | Good |
Motion Isolation Partners, light sleepers | Excellent | Good |
Pressure Relief Hip/shoulder pain | Excellent | Excellent |
Edge Support Sit/sleep near edge | Average | Average |
Durability Long-term performance | Good | 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 | Available | Affirm |
| 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 Nectar Premier over the Amerisleep AS4. It scores higher in cooling, price-to-value and delivers stronger overall value. The Amerisleep AS4 is the better choice only if you specifically prefer a softer, more plush feel.
Amerisleep AS4 vs Nectar Premier: What Actually Differs
The Amerisleep AS4 is a foam build, while the Nectar Premier is a memory foam — that single difference drives most of the cooling, motion, and feel decisions below. The Nectar Premier stands 13" tall versus 12" for the Amerisleep AS4 — a 1.0" gap that matters if you need deep-pocket sheets or are pairing with an adjustable base. The Nectar Premier is the firmer of the two at 6/10 (medium-firm), and the Amerisleep AS4 sits at 3.5/10 (medium-soft) — a meaningful enough gap that sleeper position and weight should drive the choice. The single largest performance gap is in cooling: the Nectar Premier rates noticeably higher than the Amerisleep AS4, which is the deciding factor if that dimension is high on your list. On a Queen, the Nectar Premier runs $549 versus $1,149 for the Amerisleep AS4 — roughly $600 (52%) less, which is enough to factor into the decision unless the pricier model wins clearly on the specs you care about. Trial periods aren't symmetrical either: the Nectar Premier ships with a 365-night sleep trial versus 100 nights for the Amerisleep AS4, giving you a longer in-home runway to send it back if the feel doesn't land.
Which Is Better For Your Sleep Style?
Both rate the same for pressure relief — choose on firmness instead (side sleepers usually prefer the softer of the two: Amerisleep AS4 at 3.5/10).
Firmness of 6/10 is closer to the medium-firm sweet spot back sleepers need for lumbar support (vs 3.5/10).
Firmer at 6/10 vs 3.5/10 — stomach sleepers need the extra support to keep the pelvis from sinking and arching the lower back.
Stronger cooling rating, which matters most for sleepers who run hot or live in warm climates.
Durability and edge-support ratings are equivalent — either holds up.
Softer at 3.5/10 vs 6/10 — lighter sleepers compress less, so they typically need the softer of two options to get proper contouring.
Higher motion-isolation rating, which means less disturbance when a partner moves or gets out of bed.
Price Comparison (Queen)
| Mattress | MSRP | Current | Sale? |
|---|---|---|---|
| Nectar Premier | $949 | $549 | Save $400 |
| Amerisleep AS4 | $1,649 | $1,149 | Save $500 |
The Nectar Premier is the budget choice at $549 — $600 less than the Amerisleep AS4 ($1,149). That's a 52% 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)
Nectar Premier
Strengths
- ✓Enhanced cooling
- ✓365-night trial
- ✓Lifetime warranty
- ✓Excellent pressure relief
Considerations
- —Priced above entry-level options in this category — reflects premium materials and construction above mainstream mattress standards
- —Limited edge support
- —Foam only (no coils)
Who Should Buy Which?
Choose the Amerisleep AS4 if you…
- →Couples / light sleepers
- →Softer feel seekers
Choose the Nectar Premier if you…
- →Hot sleepers
- →Budget-conscious shoppers
- →Trial-period sensitive buyers
- →Organic / non-toxic priority shoppers