SPT SD-9254SSB 18″ Wide Built-In Stainless Steel vs Whirlpool WDP540HAMZ
Updated July 2026 — Whirlpool WDP540HAMZ leads on weight and width.
The SPT SD-9254SSB is a compact and energy-efficient option, while the Whirlpool WDP540HAMZ offers larger capacity and advanced cleaning features. Choose based on your space and needs.
Why SPT SD-9254SSB 18″ Wide Built-In Stainless Steel is better
Compact Size
Ideal for smaller kitchens with 18-inch width.
Lower Price
Priced at $449.99, cheaper than Whirlpool.
Energy Efficiency
Lower energy consumption at 234 kWh/year.
Why Whirlpool WDP540HAMZ is better
Larger Capacity
Holds up to 12 place settings.
Advanced Cleaning
Features Boost Cycle for tough messes.
Quieter Operation
Operates at 55 dBA, still quiet for most homes.
Overall score
Specifications
| Spec | SPT SD-9254SSB 18″ Wide Built-In Stainless Steel | Whirlpool WDP540HAMZ |
|---|---|---|
| Wash Programs | 6 | 5 |
| Energy Star | Yes | Yes |
| Drying System | Heated | Heated |
| Sales Rank | 1757 | 874 |
| Price | $449.99 | $459.00 |
Dimension comparison
Overview of the Products
The SPT SD-9254SSB and the Whirlpool WDP540HAMZ are both solid choices in the dishwasher market, but they cater to different needs and preferences. The SPT SD-9254SSB is priced at $449.99 and offers an 18-inch wide design, making it ideal for smaller spaces. On the other hand, the Whirlpool WDP540HAMZ is slightly more expensive at $459.00 and features a larger capacity, accommodating up to 12 place settings.
Design and Build Quality
The SPT SD-9254SSB features a built-in, top-mount design crafted from stainless steel, which is not only durable but also contributes to a sleek appearance in any kitchen. Its compact 18-inch width is designed to fit snugly in smaller spaces, making it a great option for apartments or homes with limited kitchen real estate. Conversely, the Whirlpool WDP540HAMZ, at 24 inches, provides a larger capacity, allowing it to hold up to 12 place settings. The hybrid tub with a dark gray interior conceals stains and enhances durability, presenting a practical choice for families or those who frequently entertain.
Cleaning Performance
When it comes to cleaning capabilities, the SPT SD-9254SSB offers six wash programs: Normal, Heavy, Energy, Glass, Quick, and Rinse, allowing users to select the best option for their dishwashing needs. The heated drying function during the drying cycle further enhances its performance. However, the Whirlpool WDP540HAMZ takes cleaning to another level with its Boost Cycle, designed specifically for tough messes, utilizing extra water and heat compared to the Normal cycle. This feature, combined with its triple filtration wash system, ensures cleaner dishes by preventing food redepositing.
Noise Level and Operation
Operating at 52 dBA, the SPT SD-9254SSB is relatively quiet, making it suitable for homes where noise may be a concern. In comparison, the Whirlpool WDP540HAMZ operates at a slightly louder 55 dBA, but still quiet enough to run during meals or overnight. The difference of just 3 dBA may not be significant for many users, but it is worth noting for those who prioritize a peaceful kitchen environment.
Energy Efficiency
Both dishwashers are Energy Star certified, indicating they meet or exceed federal guidelines for energy efficiency. The SPT SD-9254SSB consumes 234 kWh per year, while the Whirlpool WDP540HAMZ does not specify its energy consumption but is marketed for efficiency. However, the SPT model has a slight edge in energy savings due to its smaller size, making it potentially more suitable for those conscious of energy costs.
Additional Features
The SPT SD-9254SSB includes features such as a time delay function, error alarm, rinse aid warning indicator, and automatic dispensers for detergent and rinse agents. These practical features enhance user experience and convenience. The Whirlpool WDP540HAMZ, while offering fewer wash cycles with its five options, includes a cycle memory that remembers the last cycle used, streamlining operation. It also features a cycle status indicator light, providing users with clear visibility of the machine's operation.
Price Comparison
The SPT SD-9254SSB is currently priced at $449.99, while the Whirlpool WDP540HAMZ is listed at $459.00. This makes the SPT model about 2% cheaper than its Whirlpool counterpart. While the difference in price is minimal, it may influence buyers who are more budget-conscious and looking for a compact option.
Which should you buy?
Choosing between the SPT SD-9254SSB and the Whirlpool WDP540HAMZ ultimately depends on your specific needs. If space is a primary concern and you're looking for a more compact option at a slightly lower price, the SPT model is an excellent choice. However, if you require a larger capacity and enhanced cleaning features, the Whirlpool model may be worth the extra investment. Both units have their strengths, but understanding your kitchen requirements will guide you to the best decision.

