Frigidaire FDSH4501A vs WD21X31906 Dishwasher Electronic Control Board
Updated July 2026 — Frigidaire FDSH4501A wins on price and energy efficiency, WD21X31906 Dishwasher Electronic Control Board wins on sales rank.
The Frigidaire FDSH4501A is a comprehensive dishwasher with advanced features, while the WD21X31906 is a necessary replacement part. Choose based on whether you need a new appliance or a repair component.
Why Frigidaire FDSH4501A is better
Functionality
Complete dishwasher vs. replacement part
Features
Advanced cleaning and drying capabilities
Capacity
Holds up to 14 place settings
Why WD21X31906 Dishwasher Electronic Control Board is better
Price
Significantly lower cost
Specificity
Designed for specific dishwasher repairs
OEM Quality
Genuine replacement part
Overall score
Specifications
| Spec | Frigidaire FDSH4501A | WD21X31906 Dishwasher Electronic Control Board |
|---|---|---|
| Type | Dishwasher | Control Board |
| Material | Stainless Steel | OEM Plastic |
| Drying System | EvenDry | N/A |
| Installation | Standard | Specific |
| Warranty | 1 Year | N/A |
Dimension comparison
Overview
When comparing the Frigidaire FDSH4501A 24 Inch Wide Top Control Dishwasher with EvenDry and the WD21X31906 Dishwasher Electronic Control Board, the key takeaway is that these two products serve very different purposes. The Frigidaire FDSH4501A is a fully functional dishwasher, while the WD21X31906 is a replacement part for dishwashers. Understanding their distinct roles will help in making an informed decision based on your specific needs.
Product Purpose
The Frigidaire FDSH4501A is designed as a complete dishwasher solution, equipped with features that ensure efficient cleaning and drying of dishes. It boasts a large capacity, holding up to 14 place settings, making it suitable for families or individuals who frequently entertain guests. On the other hand, the WD21X31906 serves as an electronic control board replacement, which is essential for the operation of certain dishwashers. Without the control board, the dishwashing unit cannot function properly, highlighting the importance of having the right part for maintenance and repair.
Price Comparison
The Frigidaire FDSH4501A is priced at $579.00, while the WD21X31906 is significantly cheaper at $183.99. This makes the electronic control board about 68% less expensive than the dishwasher itself. However, it's important to note that the lower price of the control board reflects its function as a replacement part rather than a complete appliance. Therefore, while the price difference is substantial, it is also indicative of the differences in their roles and functionalities.
Features and Benefits
The Frigidaire FDSH4501A offers several impressive features, including an EvenDry fan-assisted system and a BladeSpray arm, ensuring thorough washing and spot-free drying. Additionally, it operates quietly at 49 dB and is ENERGY STAR certified, promoting energy efficiency. In contrast, the WD21X31906 features genuine OEM quality, replacing several part numbers and ensuring compatibility for repairs. While the control board does not have the broad feature set of the dishwasher, its reliability as a replacement part is crucial for maintaining the functionality of existing dishwashers.
Brand Reputation
Frigidaire is a well-known brand in the kitchen appliance market, with a strong reputation for quality and performance. The Frigidaire FDSH4501A holds a sales rank of 1623, indicating its popularity among consumers. In comparison, Allstar Appliance Parts, the brand behind the WD21X31906, specializes in replacement parts but does not have the same level of brand recognition as Frigidaire. This difference in brand reputation may influence buyer confidence, particularly for those investing in a major appliance versus a component part.
Target Audience
The target audience for the Frigidaire FDSH4501A includes homeowners and renters looking for a reliable dishwasher that can handle multiple place settings and provide efficient cleaning and drying. This product appeals to those who prioritize convenience and performance in their kitchen. Conversely, the WD21X31906 is aimed at those who may already own a dishwasher that requires a replacement electronic control board. This audience is typically more focused on maintenance and repair rather than purchasing a new appliance, as they seek to extend the life of their existing unit.
Installation and Maintenance
Installation of the Frigidaire FDSH4501A is typically straightforward, as it is designed to replace any standard dishwasher setup. However, it does require a basic understanding of plumbing and electrical connections, which may necessitate professional installation for some users. On the other hand, the WD21X31906's installation is contingent upon the user's ability to identify the correct part for their dishwasher. The manufacturer notes that if the part does not match, it should not be installed, emphasizing the importance of proper identification for maintenance and ensuring the component's effectiveness.
Which should you buy?
Choosing between the Frigidaire FDSH4501A and the WD21X31906 ultimately depends on your specific needs. If you are in the market for a new dishwasher that offers extensive features and capacity, the Frigidaire FDSH4501A is the clear choice. However, if you own a dishwasher that requires a replacement electronic control board, the WD21X31906 is a cost-effective option to ensure your appliance remains functional. Each product serves its purpose effectively, but they cater to different aspects of kitchen appliance ownership.

