LG WM3400CW 4.5 cu ft Front-Load vs LG 4.5 Cu. Ft. Ultra Large
Updated April 2026 — LG WM3400CW 4.5 cu ft Front-Load wins on smart features and design flexibility, LG 4.5 Cu. Ft. Ultra Large wins on noise control and price and value.
$849.00LG 4.5 Cu. Ft. Ultra Large Capacity Front Load Washer, Smart Wi-Fi Enabled, TurboWash 360° Technology, Built-In Intelligence, White
LG
$729.00LG WM3400CW 4.5 cu ft Front-Load Washer – High-Efficiency, LoDecibel™ Quiet Operation, 6Motion™ Technology, White
LG
The LG 4.5 Cu. Ft. Ultra Large (Product B) offers better overall value at $729.00 compared to the LG WM3400CW (Product A) at $849.00. Both models share the same 4.5 cu ft capacity, but Product B includes ENERGY STAR certification and quiet operation technologies at a lower price point. Product A justifies its higher cost with smart technology and a shallow depth design for compact spaces.
Why LG WM3400CW 4.5 cu ft Front-Load is better
Higher Price Point Indicates Premium Tier
Listed at $849.00
Large Capacity for Family Loads
4.5 cu ft capacity
Smart Connectivity Included
Smart Front-Load Washer feature
Why LG 4.5 Cu. Ft. Ultra Large is better
Lower Purchase Price
Listed at $729.00
Large Capacity for Family Loads
4.5 cu ft capacity
Energy Efficiency Certified
ENERGY STAR Certified
Overall score
Specifications
| Spec | LG WM3400CW 4.5 cu ft Front-Load | LG 4.5 Cu. Ft. Ultra Large |
|---|---|---|
| Price | $849.00 | $729.00 |
| Capacity | 4.5 cu ft | 4.5 cu ft |
| Smart Technology | Yes | Not Mentioned |
| Door Type | Tempered Glass | Not Mentioned |
| Tub Material | Stainless Steel | Not Mentioned |
| Depth Design | Shallow Depth | Not Mentioned |
| Noise Operation | Not Mentioned | LoDecibel Quiet |
| Vibration System | Not Mentioned | TrueBalance Anti-Vibration |
| Wash Motion | ColdWash Technology | 6Motion Technology |
| Energy Certification | Not Mentioned | ENERGY STAR |
Dimension comparison
Design and build quality
The LG WM3400CW (Product A) features a tempered glass door which provides durability and visibility into the washing drum during operation. The tub is constructed from stainless steel, offering durability and preventing chips that can potentially snag on clothing during the wash cycle. Product A is also designed with a shallow depth, allowing it to fit in more compact spaces where standard depths might not work. Product B does not explicitly mention door material or tub composition in the provided data, but it emphasizes a TrueBalance Anti-Vibration System which minimizes vibration for smooth and quiet performance. Both units are built by LG, suggesting a baseline of manufacturing quality, though Product A highlights specific physical build advantages like the tempered glass and stainless steel tub.
Capacity and load size
Both washing machines offer a large 4.5 cu ft capacity. This size is capable of handling everyday laundry, bulky towels, bedding, delicates, and family-sized loads in fewer cycles. For Product B, the capacity is explicitly marketed as Ultra Large, emphasizing its ability to manage significant volumes of laundry efficiently. Product A matches this capacity, ensuring that users do not sacrifice load size when choosing the model with smart features or shallow depth. The 4.5 cu ft specification is a key commonality, making both units suitable for medium to large households requiring substantial wash volume per cycle.
Performance and wash technology
Product A utilizes ColdWash Technology, which employs different washing motions and techniques to utilize cold water efficiently. This can help in preserving fabric quality while ensuring cleaning effectiveness. Product B features 6Motion Technology, which provides optimized wash motions to clean clothes effectively while reducing wear on fabrics. Both technologies aim to balance cleaning power with fabric care. While specific cycle times or RPM figures are not provided in the data, the presence of specialized motion technologies in both units suggests a focus on performance beyond standard agitation. The ColdWash feature in Product A may offer specific benefits for energy savings during heating, while 6Motion in Product B focuses on mechanical action optimization.
Smart features and connectivity
Product A is equipped with smart technology, allowing users to control and monitor the washing process remotely. This feature adds a layer of convenience for users who wish to manage laundry schedules from outside the laundry room or via mobile devices. Product B does not mention smart connectivity in the provided specifications. For users who prioritize integration with smart home ecosystems or remote monitoring, Product A holds a distinct advantage. The absence of mentioned smart features in Product B suggests it may be a more traditional appliance focused on core washing functions rather than connectivity. This distinction is significant for tech-oriented households.
Noise and vibration control
Product B highlights LoDecibel Quiet Operation, which reduces noise during wash and spin cycles, making it ideal for homes or apartments where noise pollution is a concern. It also includes the TrueBalance Anti-Vibration System to minimize vibration for smooth and quiet performance even during high-speed spins. Product A does not explicitly mention noise reduction technologies in the provided data. For installations near living spaces or in multi-unit dwellings, the quiet operation features of Product B provide a tangible benefit. The lack of specified noise control in Product A does not necessarily mean it is loud, but Product B actively markets this capability as a key feature.
Energy efficiency and operation
Product B is ENERGY STAR Certified, indicating efficient energy and water use that helps reduce utility costs. This certification is a verified standard for energy efficiency. Product A mentions ColdWash Technology which utilizes cold water efficiently, potentially reducing energy consumption related to water heating, but it does not carry the explicit ENERGY STAR mention in the provided text. For users focused on long-term operational costs and environmental impact, the ENERGY STAR certification on Product B provides a verified benchmark. Product A's cold water efficiency is a beneficial feature but lacks the external certification detail provided for Product B.
Price and value
Product A is priced at $849.00, while Product B is priced at $729.00. This represents a price difference of $120.00 in favor of Product B. Both units offer the same 4.5 cu ft capacity. Product B provides ENERGY STAR certification and quiet operation technologies at the lower price point. Product A justifies the higher cost with smart technology, a tempered glass door, stainless steel tub details, and a shallow depth design. For budget-conscious buyers, Product B offers significant savings. For those requiring specific physical dimensions or smart connectivity, Product A offers value through those specialized features despite the higher upfront cost.
Which one should you buy?
If your priority is cost savings and energy efficiency, the LG 4.5 Cu. Ft. Ultra Large (Product B) is the recommended choice at $729.00. It offers the same capacity as Product A, includes ENERGY STAR certification, and features noise reduction technology. However, if you need a washer that fits in a compact space due to shallow depth, or if remote smart control is essential for your household, the LG WM3400CW (Product A) at $849.00 is the appropriate selection. Both machines provide robust 4.5 cu ft capacity, ensuring either choice can handle family-sized loads effectively. The decision ultimately depends on whether the premium features of Product A outweigh the $120.00 savings and efficiency certifications of Product B.