LG
LG LDTH7972S Stainless Steel Top Control Smart Dishwasher
★★★★★
QuadWash Pro multi-arm spray coverage and TrueSteam at 42 dBA make this a straight drop-in upgrade for a standard 24-inch built-in opening.
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Overview
Experience Next-Level Clean with Smart Technology
Introducing the LG LDTH7972S Top Control Smart Dishwasher, engineered to deliver sparkling clean dishes with innovative features and smart capabilities. Operating at a quiet 42 dBA, this stainless-steel dishwasher integrates seamlessly into your kitchen while providing powerful and efficient cleaning performance.
Specifications
- Brand: LG
- Model: LDTH7972S
- Color: Stainless Steel
- Noise Level: 42 dBA
- Special Features: QuadWash Pro, Dynamic Heat Dry, TrueSteam, Height Adjustable 3rd Rack, Adjustable
- Installation Type: Built-In
- Controls Type: Push Button
- Voltage: 120 Volts
- Material: Stainless Steel
- Product Dimensions: 24.63"D x 23.75"W x 33.63"H
- Item Weight: 110 pounds
- Included Components: Dishwasher
- Finish Type: Stainless Steel
Key Features
QuadWash Pro
Dynamic Heat Dry
TrueSteam
Pros & Cons
👍 Pros
- QuadWash Pro uses multiple rotating spray arms rather than a single fixed arm, increasing wash coverage across all rack zones without requiring manual repositioning of items.
- TrueSteam injection penetrates baked-on residue during the wash phase, reducing the need for pre-rinsing or soaking large loads before running a cycle.
- 42 dBA noise output is whisper-quiet during operation — measurably quieter than the 50+ dBA ratings common on mid-range units, making it viable in open-plan kitchens.
- Dynamic Heat Dry actively circulates heated air to dry dishes rather than relying solely on residual heat, which reduces condensation pooling in the bottom rack.
- Height-adjustable 3rd rack provides genuine load flexibility between cycles without tools or rack removal.
👎 Cons
- At 110 pounds, moving and positioning this unit during installation is a two-person job — attempting a solo slide-in risks cabinet damage or a dropped unit.
- Top-control panel is completely inaccessible while the door is closed, so there is no way to check cycle status or pause without opening the door and interrupting the cycle.
- Smart connectivity setup requires Wi-Fi configuration through the LG ThinQ app before smart features are functional — adds non-trivial setup time during initial install.
- The 24.63-inch depth exceeds a flush standard cabinet depth, which may create a slight protrusion past the counter edge in older kitchens without extended toe-kick clearance.
- Built-in installation means no repositioning once plumbed and wired in — factor this into placement decisions before committing to a location.
Frequently Asked Questions
Will the LDTH7972S fit a standard 24-inch cabinet cutout without modification?
The unit measures 23.75 inches wide, which fits a standard 24-inch cabinet opening. The depth is 24.63 inches — slightly deeper than a flush 24-inch cabinet depth — so confirm your counter overhang or toe-kick clearance before sliding it in. Height adjusts to fit standard 33.5–34.5 inch under-counter openings.
What electrical circuit does this dishwasher require?
It runs on 120V and draws standard residential current, but a dedicated 15-amp or 20-amp circuit is strongly recommended to avoid nuisance tripping when TrueSteam and the heating element run simultaneously. Check your panel before install — sharing a circuit with a disposal or refrigerator can cause problems under full load.
Does TrueSteam require a separate dedicated water supply line?
No. TrueSteam generates steam from the main water inlet — no secondary supply line or dedicated steam connection is needed. The steam is produced internally during the wash cycle to loosen baked-on food and sanitize, using the same hot water supply as the main wash.
How does the height-adjustable 3rd rack change what you can load?
The 3rd rack slides up or down to accommodate tall glasses in the upper rack or oversized pots in the lower rack depending on the cycle. It's a real load-flexibility feature — adjusting it takes seconds and does not require removing other racks.
Is the top control panel accessible mid-cycle to check or change settings?
No. Because the controls are on the top edge of the door, they are hidden when the door is closed and the dishwasher is running. You must open the door to access the panel. If mid-cycle visibility matters to you, this is a genuine ergonomic trade-off of the top-control design.
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