EdgeStar BIDW1802SS 18 Inch Wide 8 Place Setting Built-In Dishwasher vs Sharp SDW6504MS Stainless Steel Dishwasher, 24-inch Pocket Handle, 52 dB, Hybrid Tub, 12 Place Settings, 5 Cycles, Heated Dry

Size and Capacity: Larger, More Flexible Loading

The Sharp SDW6504MS offers significantly more capacity than the EdgeStar BIDW1802SS. With a 12-place setting capacity, it can handle full household loads comfortably, while the EdgeStar model fits only eight place settings. This difference makes the Sharp ideal for larger families or those who frequently wash full loads. The Sharp also features fold-down tines in the lower rack, allowing greater flexibility when loading taller or irregularly shaped dishes, a feature not mentioned in the EdgeStar’s specifications. The EdgeStar’s compact 18-inch width may suit tight spaces or replacements for older appliances like trash compactors, but its smaller size limits overall utility. For users prioritizing space efficiency without sacrificing load size, the Sharp’s 24-inch footprint delivers better value per square inch of kitchen real estate.

Design and Build Quality: Hybrid Construction vs. Standard Interior

The Sharp SDW6504MS uses a hybrid tub construction combining a stainless steel interior with a heavy-duty plastic floor, designed to balance durability and performance. This design is highlighted as optimal for long-term use and resistance to wear. In contrast, the EdgeStar BIDW1802SS does not specify its interior material beyond mentioning a silverware basket and cup tray. While both models feature stainless steel exteriors—Sharp explicitly notes a fingerprint-resistant finish—the Sharp’s hybrid interior suggests a more advanced internal structure. The EdgeStar lacks mention of any special materials or structural enhancements, relying instead on basic functionality. For users seeking a dishwasher built to withstand frequent use and varied dish types, the Sharp’s hybrid construction provides a tangible advantage in build quality that isn’t matched by the EdgeStar’s generic description.

Noise Level and Operation: Whisper-Quiet Performance

Both dishwashers operate at 52 dB, ensuring quiet performance during cycles. However, the Sharp SDW6504MS specifically mentions “library quiet technology” delivering just 52 dBA, a more precise noise rating that emphasizes its suitability for open-concept kitchens where sound can carry. The EdgeStar lists 52 dB operation but doesn’t reference any specialized acoustic technology. Despite identical decibel ratings, the Sharp’s emphasis on low-noise engineering suggests a more refined sound profile. Both units include a child lock feature, but only the Sharp describes a back-lit front control panel for easy visibility and operation. For households sensitive to appliance noise, especially during evening use, the Sharp’s targeted noise reduction claims offer a stronger assurance of peace and quiet compared to the EdgeStar’s general specification.

Wash Cycles and Features: More Options, Better Efficiency

The Sharp SDW6504MS includes five wash cycles—Normal, Heavy, ECO, Quick, and Sanitize—plus four options including a half-load setting, which reduces water and energy usage for smaller loads. This efficiency-focused feature is absent in the EdgeStar BIDW1802SS, which offers six cycles (Heavy, Normal, ECO, Glass, Rapid, Rinse) and three options (Sanitize, Hi Temp, Heated Dry). While both models support sanitization, the Sharp’s inclusion of a half-load option adds practical value for daily use. The EdgeStar’s rapid cycle is useful for quick cleanups, but the absence of a dedicated efficiency mode limits its appeal for eco-conscious users. The Sharp’s broader feature set, particularly the half-load function, makes it more adaptable to diverse household needs and daily routines.

Price and Value: Clear Cost Advantage for Sharp

The Sharp SDW6504MS is priced at $399.00, making it about 26% cheaper than the EdgeStar BIDW1802SS, which sells for $539.00. This $140 price difference represents significant savings, especially considering the Sharp’s superior capacity and additional features. The EdgeStar’s higher cost is not justified by any clearly superior specs, as the Sharp matches or exceeds it in key areas like capacity, interior construction, and operational efficiency. The Sharp also has a better bestseller rank (132) compared to the EdgeStar’s 657, suggesting stronger market demand and customer confidence. For budget-conscious buyers seeking more value per dollar, the Sharp delivers a compelling combination of price, performance, and features.

Space and Installation: Compact Fit vs. Standard Width

The EdgeStar BIDW1802SS measures just 17.6 inches wide, making it ideal for tight spaces or replacing older appliances like trash compactors. Its cutout dimensions are 32.5 inches high, 17.75 inches wide, and 23 inches deep—perfect for custom cabinetry. The Sharp SDW6504MS is 24 inches wide, fitting standard kitchen cutouts but requiring more room. While the EdgeStar’s narrow profile suits constrained kitchens, the Sharp’s wider design offers greater stability and potentially better access. The EdgeStar’s depth with door open is 42.25 inches, slightly less than the Sharp’s unspecified but likely similar measurement. For users with limited space, the EdgeStar’s compact size is a clear benefit, but for most kitchens, the Sharp’s standard width is more practical and widely supported.

Which should you buy?

Choose the Sharp SDW6504MS if you want more capacity (12 place settings), quieter operation with library-quiet technology, a hybrid tub for durability, and a half-load option for efficiency—all at $399.00, which is $140 less than the EdgeStar BIDW1802SS. It outperforms the EdgeStar in features, build quality, and value, backed by a better bestseller rank. Opt for the EdgeStar BIDW1802SS only if your kitchen space is extremely limited and you need an 18-inch-wide unit to replace a compact appliance like a trash compactor—its narrower width is its only meaningful advantage. For nearly all other users, the Sharp offers superior performance, modern features, and better pricing.