Amerisleep AS5 vs Beautyrest Harmony Lux Carbon Medium Pillow Top
Detailed side-by-side comparison — pricing, specs, performance ratings, and our pick.
| Feature | Amerisleep AS5 | Beautyrest Harmony Lux Carbon Medium Pillow Top |
|---|---|---|
| Overview | ||
Type | Memory Foam | Hybrid |
Firmness 1 = softest, 10 = firmest | 3.5 / 10 | 5.5 / 10 |
Queen Price Current / sale price | $1,849 | $1,149 |
Trial Period Return window | 100 nights | 100 nights |
Warranty | 20 years | 10 years |
| Performance Ratings | ||
Cooling Hot sleepers | 8/10 | High |
Motion Isolation Partners, light sleepers | 9/10 | Excellent |
Pressure Relief Hip/shoulder pain | 9/10 | 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, SEAQUAL |
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 Beautyrest Harmony Lux Carbon Medium Pillow Top over the Amerisleep AS5. It scores higher in motion isolation, pressure relief, edge support and delivers stronger overall value. The Amerisleep AS5 is the better choice only if you specifically prefer a softer, more plush feel.
Amerisleep AS5 vs Beautyrest Harmony Lux Carbon Medium Pillow Top: What Actually Differs
The Amerisleep AS5 is a memory foam build, while the Beautyrest Harmony Lux Carbon Medium Pillow Top is a hybrid (plant-based_memory_foam vs pillow_top) — that single difference drives most of the cooling, motion, and feel decisions below. The Beautyrest Harmony Lux Carbon Medium Pillow Top stands 15.75" tall versus 14" for the Amerisleep AS5 — a 1.8" gap that matters if you need deep-pocket sheets or are pairing with an adjustable base. The Beautyrest Harmony Lux Carbon Medium Pillow Top is the firmer of the two at 5.5/10 (medium), and the Amerisleep AS5 sits at 3.5/10 (medium-soft) — a meaningful enough gap that sleeper position and weight should drive the choice. On a Queen, the Beautyrest Harmony Lux Carbon Medium Pillow Top 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.
Firmness of 5.5/10 is closer to the medium-firm sweet spot back sleepers need for lumbar support (vs 3.5/10).
Firmer at 5.5/10 vs 3.5/10 — 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 3.5/10 vs 5.5/10 — 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? |
|---|---|---|---|
| Beautyrest Harmony Lux Carbon Medium Pillow Top | $1,399 | $1,149 | Save $250 |
| Amerisleep AS5 | $2,349 | $1,849 | Save $500 |
The Beautyrest Harmony Lux Carbon Medium Pillow Top 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 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
Beautyrest Harmony Lux Carbon Medium Pillow Top
Strengths
- ✓Captured Beautyrest PDP copy published 40% more coils and more pressure-relieving foam than Harmony models
- ✓InfiniCool Lux adds two layers of active cooling
- ✓T2 Pocketed Coil system supports motion isolation
- ✓100% USA assembled statement was published on the captured manufacturer page
Considerations
- —Beautyrest now redirects the product URL to the mattress collection page
- —Inventory should be treated as clearance/legacy rather than current core assortment
- —Split King and Split King Dual were not sold on the captured manufacturer PDP
Who Should Buy Which?
Choose the Beautyrest Harmony Lux Carbon Medium Pillow Top if you…
- →Couples / light sleepers
- →Side sleepers / pressure relief
- →Sitting near the edge
- →Budget-conscious shoppers