EdgeStar BIDW1802SS vs KOSTCH
Updated July 2026 — EdgeStar BIDW1802SS wins on noise level, KOSTCH wins on weight and place settings.
The KOSTCH offers superior features and performance, making it the better choice for larger households. However, the EdgeStar is a more budget-friendly option.
Why EdgeStar BIDW1802SS is better
Price
EdgeStar is approximately 46% cheaper.
Size
EdgeStar is more compact at 18 inches.
Simplicity
EdgeStar has a simpler setup for basic needs.
Why KOSTCH is better
Capacity
KOSTCH accommodates 15 place settings.
Noise Level
KOSTCH operates at a quieter 45 dB.
Features
KOSTCH has 8 wash programs and a third rack.
Overall score
Specifications
| Spec | EdgeStar BIDW1802SS | KOSTCH |
|---|---|---|
| Wash Cycles | 6 | 8 |
| Energy Star | No | Yes |
| Control Type | Front | Top |
| Spray Arms | 1 | 3 |
| Warranty | 1 Year | 3 Years |
Dimension comparison
Overview of the Dishwashers
The EdgeStar BIDW1802SS is priced at $539.00, making it about 46% cheaper than the KOSTCH, which costs $999.00. Both dishwashers are designed for built-in installation, catering to different kitchen needs and budgets. While the EdgeStar accommodates up to eight place settings, the KOSTCH can handle a larger capacity of 15 place settings, appealing to bigger households or those who entertain frequently.
Cleaning Performance
The KOSTCH offers superior cleaning performance with its eight versatile wash programs, including Auto, Heavy, and Eco, compared to the EdgeStar's six wash cycles. This flexibility allows users to select the best wash based on load type, from heavily soiled pots to delicate glassware. The KOSTCH's multi-directional spray arms ensure complete coverage, effectively removing food residues and stains, which can be a significant advantage for users who prioritize a thorough clean.
Noise Levels
The KOSTCH operates at a remarkably quiet 45 dB, making it one of the quieter options on the market. In contrast, the EdgeStar operates at 52 dB, which is still relatively quiet but might be noticeable in an open-concept kitchen. For users sensitive to noise or those who prefer to run their dishwasher during late hours, the KOSTCH’s quieter operation can be a compelling feature.
Design and Build Quality
The KOSTCH emphasizes modern aesthetics with its enamel-coated door and sleek finish, available in multiple colors, including a striking red. This design not only enhances kitchen decor but is also scratch-resistant and easy to clean. The EdgeStar, while functional, lacks the same level of style and variety in finishes. For homeowners looking to blend their appliances seamlessly into a stylish kitchen, the KOSTCH offers a more visually appealing option.
Convenience Features
Both dishwashers come equipped with features aimed at enhancing user convenience, but the KOSTCH stands out with its third layer cutlery basket and height-adjustable upper basket. These features allow for better organization and the ability to wash taller items, such as pots and large utensils. The EdgeStar has a simpler setup, which could be sufficient for users with fewer dishwashing needs but may lack the versatility that larger households require.
Energy Efficiency
The KOSTCH is ENERGY STAR certified, which not only means it is designed to be energy-efficient but also potentially offers savings on utility bills over time. While the EdgeStar does not specifically mention energy efficiency certifications, it is essential to consider that higher-capacity machines like the KOSTCH are built to minimize energy use while delivering performance. Thus, for environmentally conscious consumers, the KOSTCH provides an added incentive to invest in energy-saving technology.
Price Comparison
With EdgeStar at $539.00 and KOSTCH at $999.00, the price difference is substantial. The EdgeStar is approximately 46% cheaper, making it an attractive option for budget-conscious consumers or those who require a basic dishwasher without the bells and whistles. Conversely, the KOSTCH justifies its higher price with advanced features, greater capacity, and enhanced performance capabilities, appealing to those willing to invest more for quality and functionality.
Which should you buy?
Choosing between the EdgeStar BIDW1802SS and the KOSTCH 24-inch Built-In Dishwasher boils down to your specific needs and budget. If you’re looking for a more affordable option that covers basic dishwashing needs, the EdgeStar is an excellent choice. However, if you require greater capacity, advanced cleaning features, and a quieter operation for a larger household, the KOSTCH is worth the investment. Ultimately, both dishwashers serve distinct purposes, catering to different consumer preferences in the competitive appliance market.

