Amerisleep AS5 vs Beautyrest Harmony Lux Carbon Medium Pillow Top
Detailed side-by-side comparison — pricing, specs, performance ratings, and our pick.
Pricing unavailable — visit Amerisleep for current rates
Check current price at Amerisleep →Pricing unavailable — visit Beautyrest for current rates
Check current price at Beautyrest →| Feature | Amerisleep AS5 | Beautyrest Harmony Lux Carbon Medium Pillow Top |
|---|---|---|
| Overview | ||
Type | Memory Foam | Hybrid |
Firmness 1 = softest, 10 = firmest | 4 / 10 | 5.5 / 10 |
Queen Price Current / sale price | Check retailer | Check retailer |
Trial Period Return window | 100 nights | 100 nights |
Warranty | 20 years | 10 years |
| Performance Ratings | ||
Cooling Hot sleepers | Moderate | High |
Motion Isolation Partners, light sleepers | Excellent | Excellent |
Pressure Relief Hip/shoulder pain | Excellent | Good |
Edge Support Sit/sleep near edge | Fair | Good |
Durability Long-term performance | Good | Good |
| Compatibility & Features | ||
Adjustable Base Head/foot elevation | ✓ Yes | ✓ Yes |
Split King Support Two Twin XL per couple | — | — |
Dual Comfort Zones Different firmness per side | — | — |
Smart Features App, sensors, auto-adjust | — | — |
Financing | Affirm | Synchrony, 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 edge support, price-to-value and delivers stronger overall value. The Amerisleep AS5 is the better choice only if you sleep hot and cooling is your top priority.
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 — 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 4/10 (medium-soft) — a meaningful enough gap that sleeper position and weight should drive the choice. The single largest performance gap is in pressure relief: the Amerisleep AS5 rates noticeably higher than the Beautyrest Harmony Lux Carbon Medium Pillow Top, which is the deciding factor if that dimension is high on your list. On a Queen, the Beautyrest Harmony Lux Carbon Medium Pillow Top runs $1,149 versus $1,599 for the Amerisleep AS5 — roughly $450 (28%) 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?
Higher pressure-relief rating, which is what protects hip and shoulder contact points in the side position.
Firmness of 5.5/10 is closer to the medium-firm sweet spot back sleepers need for lumbar support (vs 4/10).
Firmer at 5.5/10 vs 4/10 — 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.
stronger perimeter / edge support — the two specs heavier sleepers should weight most.
Softer at 4/10 vs 5.5/10 — lighter sleepers compress less, so they typically need the softer of two options to get proper contouring.
Motion isolation rated the same on both — neither has a transfer-disturbance edge.
Price Comparison (Queen)
| Mattress | MSRP | Current | Sale? |
|---|---|---|---|
| Beautyrest Harmony Lux Carbon Medium Pillow Top | $1,399 | $1,149 | Save $250 |
| Amerisleep AS5 | $2,099 | $1,599 | Save $500 |
The Beautyrest Harmony Lux Carbon Medium Pillow Top is the budget choice at $1,149 — $450 less than the Amerisleep AS5 ($1,599). That's a 28% 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
- ✓Plush pressure relief
- ✓Plant-based foam
- ✓20-year warranty
- ✓Excellent for side sleepers
Considerations
- —Too soft for stomach sleepers
- —Priced above entry-level options in this category — reflects premium materials and construction above mainstream mattress standards
- —Limited edge support
Beautyrest Harmony Lux Carbon Medium Pillow Top
Strengths
- ✓InfiniCool Lux cooling technology
- ✓T2 pocketed coils for airflow
- ✓SEAQUAL ocean-plastic fabric cover
- ✓100-night trial
Considerations
- —DISCONTINUED Aug 19, 2025 — clearance only
- —Replaced by Beautyrest Black/Pressure Smart lines
- —Limited inventory — verify availability before publishing links
Who Should Buy Which?
Choose the Amerisleep AS5 if you…
- →Hot sleepers
- →Side sleepers / pressure relief
- →Softer feel seekers
Choose the Beautyrest Harmony Lux Carbon Medium Pillow Top if you…
- →Sitting near the edge
- →Budget-conscious shoppers
- →Organic / non-toxic priority shoppers
- →Firmer support seekers