Frigidaire 18 in. ADA Compact Front Control vs WD21X31906 Dishwasher Electronic Control Board
Updated July 2026 — Frigidaire 18 in. ADA Compact Front Control leads on price and noise level.
The Frigidaire dishwasher is a complete unit offering efficient cleaning, while the WD21X31906 is a cost-effective replacement part. Choose based on whether you need a new appliance or a repair.
Why Frigidaire 18 in. ADA Compact Front Control is better
full functionality
Frigidaire offers a complete dishwasher solution.
energy efficiency
Frigidaire is Energy Star certified.
cleaning performance
Frigidaire features a sanitizing cycle.
Why WD21X31906 Dishwasher Electronic Control Board is better
lower price
WD21X31906 is significantly cheaper.
OEM part
WD21X31906 is a genuine replacement part.
installation
WD21X31906 is easy to install.
Overall score
Specifications
| Spec | Frigidaire 18 in. ADA Compact Front Control | WD21X31906 Dishwasher Electronic Control Board |
|---|---|---|
| Brand | Frigidaire | Allstar Appliance Parts |
| Model | B07RBTFKD2 | B0D6WNG8BV |
| Type | Dishwasher | Control Board |
| Sanitize Cycle | Yes | No |
| OEM | No | Yes |
Dimension comparison
Overview of the Products
The Frigidaire 18 in. ADA Compact Front Control Dishwasher and the WD21X31906 Dishwasher Electronic Control Board serve vastly different purposes in the realm of kitchen appliances and repairs. The Frigidaire dishwasher is a complete unit designed for efficient dish cleaning, while the WD21X31906 serves as a replacement part for malfunctioning dishwashers. The former is priced at $743.00, whereas the latter is significantly cheaper at $183.99, making it about 75% less expensive.
Design and Functionality
The Frigidaire dishwasher boasts a compact design that fits up to 8 place settings, making it ideal for smaller kitchens or apartments. Its dual spray arm system ensures a thorough clean, which is essential for effective dishwashing. In contrast, the WD21X31906 is purely a control board, meant to replace a malfunctioning electronic component in a dishwasher. While it doesn't offer any cleaning capabilities, it is crucial for the overall functionality of compatible dishwashers.
Performance and Efficiency
Performance metrics differ greatly between these two products. The Frigidaire dishwasher features a Sanitizing Cycle that removes 99.9% of common household germs, emphasizing its efficiency in maintaining cleanliness. It operates at a quiet 52 DBA, allowing users to run it without disrupting their daily activities. On the other hand, the WD21X31906 is not designed for performance in the cleaning sense, but rather to restore the operational performance of a dishwasher. Its effectiveness hinges entirely on the existing appliance it is installed in.
Features and Special Offerings
The Frigidaire dishwasher includes several noteworthy features, such as six cleaning cycle options and an Energy Saver setting. It's also Energy Star certified, which means it helps conserve energy and reduce utility bills. The WD21X31906, being a replacement part, lacks such features but is guaranteed to be a Genuine OEM component, ensuring compatibility and reliability in repairs. It replaces multiple part numbers, showcasing its versatility in compatibility with various models.
Maintenance and Durability
Maintenance requirements differ significantly between the two products. The Frigidaire dishwasher requires regular upkeep, such as cleaning filters and checking spray arms for clogs, to maintain its efficient performance. Its durable design is built to last, especially given its Energy Star certification. On the other hand, the WD21X31906 is designed for easy installation, but its durability is contingent upon the existing dishwasher's condition. If the appliance itself is in poor shape, the control board may not be a long-term solution.
Cost and Value
At $743.00, the Frigidaire dishwasher represents a substantial investment, but it offers full functionality and benefits that come with a new appliance. In contrast, the WD21X31906 is priced at $183.99, making it a budget-friendly option for those looking to repair an existing dishwasher rather than purchase a new one. The cost difference of about $559.01 highlights the value that each product offers in its respective category. Buyers must weigh whether they need a new appliance or are simply looking to replace a part.
User Experience and Convenience
User experience with the Frigidaire dishwasher tends to be positive, as it includes features like a heated drying system to ensure dishes come out dry the first time. The compact design also aids in convenience, fitting into tighter spaces without sacrificing capacity. The WD21X31906's user experience is more about the peace of mind it provides when repairing a malfunctioning dishwasher. However, it requires the buyer to have technical knowledge or hire a professional for installation, which may not be as convenient for all users.
Which should you buy?
Choosing between the Frigidaire 18 in. ADA Compact Front Control Dishwasher and the WD21X31906 Dishwasher Electronic Control Board depends largely on your specific needs. If you require a fully functional dishwasher that efficiently cleans your dishes, the Frigidaire is the clear choice despite its higher price. However, if you're looking to repair an existing dishwasher and restore its functionality, the WD21X31906 offers an economical solution. Ultimately, your decision should reflect whether you need a new appliance or a replacement part.

