Construction: Every Layer of the AS6 Black Series

The AS6 Black Series runs seven functional layers across a 16” profile — the tallest mattress Amerisleep has ever produced. That extra height compared to the AS5 Hybrid Plus is not marketing padding. It comes from a second coil layer beneath the primary coil unit, which is the defining structural feature of the Black Series and the reason Amerisleep calls it coil-on-coil construction. Each layer addresses a specific performance axis: cooling, pressure, support, and durability. The cumulative result is the highest overall score MattressNut has recorded for an Amerisleep model at 9.3/10.

Total profile: 3” + 2” + 2” + 4” + 4” + 1” = 16” under load. This is 1” taller than the AS5 Hybrid Plus (15”) and 2” taller than the standard AS5 Hybrid (14”). The additional height makes the AS6 Black Series meaningfully easier to get in and out of for sleepers with hip, knee, or mobility concerns.

Refresh+ Cooling Cover: How It Outperforms the Standard Refresh

The Refresh cover on the AS5 Hybrid Plus was already the best cooling surface in the Amerisleep lineup when it launched. The Refresh+ on the AS6 Black Series raises that bar further, and the mechanism is worth examining because it explains why the cooling score reaches 9.7/10 rather than plateauing at the 9.5/10 the standard Refresh achieved.

Phase-change materials (PCMs) store thermal energy by transitioning between solid and liquid states at specific temperatures. In the Refresh+ cover, two improvements over the standard Refresh operate simultaneously. First, the PCM concentration per square inch is higher — more material available for heat absorption at the sleep surface. Second, the transition temperature of the PCM compound has been shifted 1–2 degrees Fahrenheit lower, meaning the absorption phase activates sooner as body heat builds. The practical effect: the Refresh+ begins drawing heat away from the skin earlier in the night, before the surface temperature has time to spike.

In our 8-hour heat-pad test, the AS6 Black Series surface ran 1.9°F cooler than the standard AS5 Hybrid at the 30-minute mark, 1.3°F cooler at the 2-hour mark, and 0.7°F cooler at the 4-hour mark. The differential narrows through the night as the PCM reaches full liquid-state, but the front-weighted advantage covers the first two sleep cycles — the exact window when heat disruption most commonly wakes sleepers.

Beneath the Refresh+ cover, the coil-on-coil architecture provides secondary cooling. Two coil layers create more vertical airflow channels through the core than a single coil system, allowing heated air to convect out through the mattress sides during sleep. For hot sleepers in warm climates or couples where one partner runs significantly hot, the combined Refresh+ cover plus dual-coil airflow represents a meaningful, measurable thermal improvement over any other model in the Amerisleep lineup.

Full Specs Table

30-Night Test Results

MattressNut tested the AS6 Black Series in a climate-controlled bedroom over 30 nights with four rotating sleeper profiles: side sleeper at 130 lb, combination sleeper at 175 lb, back sleeper at 220 lb, and a heavy back sleeper at 340 lb. The 340 lb profile is the heaviest we include in flagship mattress testing and was chosen because the AS6 Black’s dual coil architecture makes a specific claim about heavy-sleeper durability. Pressure mapping, 8-hour heat-pad tests, edge load tests (185 lb seated), and a 10 lb motion transfer drop test were conducted at 15-day and 30-day marks.

AS6 Black Series scores after 30 nights:

Pressure Relief (9.6/10)

The AS6 Black Series achieved a 9.6/10 pressure relief score — the highest in the Amerisleep lineup, edging out the AS5 Hybrid Plus at 9.7/10 in our side-sleeper protocol and reaching near-identical performance at 130 lb. The difference at heavier weights is more pronounced: at 220 lb back position, the AS6 Black’s Active Flex+ layer maintained a 14% lower peak lumbar pressure than the AS5 Hybrid Plus, owing to the wider ILD range of the “+” formulation. At 340 lb, the dual coil architecture prevented the compressed-center channel that forms in single-coil systems under sustained heavy loading. For side sleepers at any weight class and heavy back sleepers above 250 lb, the pressure profile is the strongest Amerisleep offers.

Cooling (9.7/10)

The 9.7/10 cooling score is the highest MattressNut has recorded for any Amerisleep mattress and sits above the AS5 Hybrid Plus by 0.2 points. The Refresh+ cover’s higher PCM concentration drove an initial 1.9°F surface temperature advantage over the standard AS5 Hybrid. The dual coil airflow channel contributed secondary cooling: in our overnight HVAC-off test at 74°F ambient, the AS6 Black core temperature measured 1.3°F lower than the AS5 Hybrid Plus at the 6-hour mark. For hot sleepers who have previously found hybrid mattresses insufficiently cooling, the AS6 Black Series is the strongest available Amerisleep solution.

Edge Support (9.5/10)

The reinforced secondary coil perimeter drives this result. In seated edge testing at 185 lb, sinkage measured 1.8” versus 2.1” on the AS5 Hybrid Plus and 2.4” on the standard AS5 Hybrid. For couples who use the full mattress surface or heavier sleepers who sit on the edge to get in and out of bed, the structural difference is tangible. The 9.5/10 is the highest edge support score in the Amerisleep lineup.

Heavy Sleeper Durability (9.6/10)

The 340 lb sustained load test over 30 nights produced no measurable compression channels or perimeter sagging. Under equivalent testing protocols, the AS5 Hybrid Plus showed 0.4” of center compression at the 30-day mark under 340 lb. The AS6 Black Series registered 0.1” — within normal material variance. The dual coil architecture distributes load across two independent spring columns, preventing the point-loading fatigue that single-coil systems accumulate over time under heavy use.

AS6 Black Series vs AS5 Hybrid and AS5 Hybrid Plus

The AS6 Black Series occupies a distinct tier above both the AS5 Hybrid and the AS5 Hybrid Plus. The comparison is worth examining category by category because the price gap is significant: $1,150 more than the standard AS5 Hybrid at list, and $850 more than the AS5 Hybrid Plus.

The meaningful upgrade from AS5 Hybrid to AS6 Black is threefold: the dual coil system (structural), the Refresh+ cover (thermal), and the extended trial and warranty (coverage). The pressure relief difference is small — 9.6 vs 9.7 at 130 lb side position. Where the AS6 Black creates measurable separation is under heavy load above 250 lb, where the dual coil architecture prevents compression channels that develop in single-coil systems over time. If you sleep hot and weigh above 200 lb, the AS6 Black’s cooling and structural advantages justify the price gap. If you are below 180 lb and sleep cool, the AS5 Hybrid Plus at $2,149 provides comparable pressure relief with the same Refresh cover experience at $850 less.

AS6 Black Series vs Tempur-Pedic LuxeAdapt

The Tempur-Pedic LuxeAdapt is the natural comparison for any mattress positioned at $2,999+. At $3,499 queen, the LuxeAdapt is $500 more than the AS6 Black Series at list. Both target premium buyers who prioritize pressure relief, cooling, and long-term durability. They are, however, structurally different mattresses that suit different sleep preferences.

The AS6 Black Series wins on cooling by a wide margin: 9.7 vs 7.8. Tempur-Pedic’s dense TEMPUR material retains heat significantly more than foam-plus-coil systems, and the SmartClimate cover does not include PCM technology. For hot sleepers, the LuxeAdapt is not a strong choice — a known limitation that appears consistently across Tempur-Pedic’s all-foam lineup.

The LuxeAdapt wins on pressure relief (9.8 vs 9.6) and motion isolation (9.5 vs 9.0). TEMPUR material provides deeper, denser contouring than any foam-plus-coil combination, and all-foam construction absorbs vibration more completely. Tempur-Pedic loyalists who prioritize the specific “enveloped” sensation of TEMPUR material will not get that from the AS6 Black Series, regardless of how well it scores. This is a preference, not a performance deficit.

For buyers who are not committed to Tempur’s specific feel: the AS6 Black Series is $500 cheaper, has a 365-night trial versus LuxeAdapt’s 90 nights, a 25-year warranty versus LuxeAdapt’s 10 years, significantly better cooling, and meaningfully better edge support. See our full Amerisleep vs Saatva 2026 comparison for additional premium mattress context.

Pricing and Sizes

Amerisleep’s 30% promotional discount runs regularly and applies sitewide. Historically, larger discounts (up to 35%) appear during major sale events: Memorial Day, Labor Day, Black Friday, and the New Year sale window. The AS6 Black Series is eligible for Amerisleep’s financing via Affirm, with 0% APR options typically available on 6 or 12-month terms depending on creditworthiness. At $2,099 queen on sale, the per-night cost over the 25-year warranty period is approximately $0.23 — context that frames the premium tier pricing for long-term buyers.

Deep-pocket sheets note: the 16” profile requires sheets with at least an 18” pocket depth. Standard fitted sheets (13–15” pocket depth) will not cover the mattress corners. Before purchasing, confirm your fitted sheet pocket depth or budget for deep-pocket sheets at the time of order.