A comparative noise level analysis of built-in dishwashers shows that 32% of models operate within the 42 dB to 45 dB range, making it the most competitive quiet-performance segment (see the comparative chart). In this LG LDTH7972S dishwasher review, the model sits right in that sweet spot at 42 dB, delivering whisper-quiet operation without stepping into ultra-premium pricing tiers. Beyond its quiet build, this built-in dishwasher offers 7 wash cycles and uses just 2.9 gallons (10.98 liters) per Normal cycle, balancing flexibility with water efficiency.
![A bar chart comparing the noise level distribution of Builtin Dishwashers, showing LG LDTH7972S positioned in the [42dB, 45dB] noise range, which covers 32% of models. Other noise ranges include [38dB, 41dB] (5%), [46dB, 49dB] (23%), [50dB, 53dB] (30%), [54dB, 57dB] (9%), and [58dB, 63dB] (2%).](https://washdrydazzle.com/wp-content/uploads/2025/05/05_LG-LDTH7972S-Comparative-Noise-Level-Analysis-DW.png "05_LG LDTH7972S Comparative Noise Level Analysis-DW")
![A bar chart comparing the noise level distribution of Builtin Dishwashers, showing LG LDTH7972S positioned in the [42dB, 45dB] noise range, which covers 32% of models. Other noise ranges include [38dB, 41dB] (5%), [46dB, 49dB] (23%), [50dB, 53dB] (30%), [54dB, 57dB] (9%), and [58dB, 63dB] (2%).](https://washdrydazzle.com/wp-content/uploads/2025/05/06_LG-LDTH7972S-Comparative-Noise-Level-Analysis-MW.png "06_LG LDTH7972S Comparative Noise Level Analysis-MW")
Read on to discover why the LG LDTH7972S is a top-tier choice for modern kitchens, or check out our Overview Summary below for a quick verdict and pricing history.
Table of Contents
Overview Summary
Performance Indicators:
LG LDTH7972S Price History:
Pros:
- Quiet 42 dB operation
- ENERGY STAR® certified
- 15 place settings capacity
- QuadWash Pro™ cleaning system
- Dynamic Heat Dry™ drying
- Wi-Fi and smart assistant compatible
- 2.9 gallons per cycle
Cons:
- Manual filter maintenance required
- No built-in water softener
- No auto door opening
LG LDTH7972S – Competitive Edge in the Market
💰 Mapping the Market: A Visual Guide to Price Ranges
The LG LDTH7972S sits in the $700 to $1009 bracket, which represents 36% of built-in dishwashers. This places it in the second most saturated segment of the market, just behind the $390 to $699 range at 37%. It clearly positions itself as upper mid-range rather than budget.
Higher-end categories above $1010 collectively account for 26% of models, meaning premium pricing is less common. While it is not the cheapest option, it competes strongly in the value-driven performance tier where most buyers focus.
🔇 Decibel Duel: Comparing Noise Levels Across Top Models
Operating at 42 dB, the LG LDTH7972S falls into the 42 dB to 45 dB range, which covers 32% of built-in dishwashers. This is the largest single category, placing it squarely in the most competitive quiet-performance segment.
Only 4% of models operate in the ultra-quiet 38 dB to 41 dB range. Meanwhile, 29% fall between 50 dB and 53 dB, which is noticeably louder. This gives the LG a clear advantage in quiet kitchens without moving into rare ultra-premium territory.
⚖️ Weight Comparison: How This Model Measures Up
At 97 pounds, the LG LDTH7972S falls within the 80.7 lb to 98.4 lb range, which represents 39% of built-in dishwashers. This is the largest category in the market, suggesting manufacturers prefer this weight class for durability and internal component stability.
Lighter models between 45 lb and 62.7 lb cover only 14%, while heavier units above 116 lb represent just 8%. Its weight reflects solid construction rather than portability, which aligns well with long-term built-in installations.
🍽️ Capacity Comparison: Where It Stands Among the Competition
With 15 place settings, the LG LDTH7972S sits in the 15 to 16 place setting category, covering 34% of built-in dishwashers. This is the largest capacity segment, indicating strong demand for family-sized models.
Smaller capacities like 11 to 12 place settings account for only 9%, while mid-range 13 to 14 place settings represent 29%. By landing in the top capacity bracket, the LG offers a clear edge for larger households or heavy daily usage.
🔄 Wash Options in Focus: This Model vs. the Competition
The LG LDTH7972S includes 7 wash cycles, placing it in the 7 wash cycle category, which represents 10% of the built-in market. The most common configuration is 6 wash cycles at 51%, making simpler setups more dominant.
Models with 8 wash cycles also represent 10%, while 9 to 10 cycles are rare at just 4%. While not the most common setup, the 7-cycle configuration offers a balanced step above standard models without becoming overly complex.
LG LDTH7972S Dishwasher
LG LDTH7972S Performance Breakdown: Key Features and Ratings
The WashDryDazzle team recently put the LG LDTH7972S built-in dishwasher to the test, all in the interest of providing you with the most informed choice for your kitchen.
💵 Price and Design (4.6/5)
At around $950, this stainless steel dishwasher feels like a premium yet sensible investment for a modern kitchen. The 24-inch width fits standard cabinetry, while the sleek, solid door and top control panel give it a clean, uninterrupted front.
The digital touch display is responsive and easy to read, with a beeper and clear end-of-cycle indicator. Wi-Fi connectivity through ThinQ®, compatible with Alexa and Google Assistant, adds smart convenience. Just remember, professional installation is recommended.
| Price | $950 |
| Height | 34 inches |
| Width | 24 inches |
| Depth | 25 inches |
| Weight | 97 pounds |
| Color | Stainless Steel |
| Control Panel Location | Top Control |
| Display | Digital display |
| Touch or Tactile Controls | Touch Control |
| Cycle status/progress indicator on display | Beeper + END Indication on Display with Indicator |
| Wi-Fi Enabled (Smart Dishwasher) | Wi-Fi Enabled |
| Compatibility with home assistants (e.g., Alexa, Google Assistant) | Alexa & Google Assistant (via ThinQ®) |
✨ Cleaning Performance (4.8/5)
With 7 wash cycles, including Auto, Heavy, Delicate, and 1-Hour, this dishwasher adapts well to everyday loads and tough cookware alike. QuadWash Pro™ uses high-pressure jets and variable spray intensities, supported by three spray arms for strong coverage.
TrueSteam® with sanitization reaches up to 167 °F (75 °C), helping loosen stubborn food and improve hygiene. The removable manual filter works efficiently, but for better performance, the entire filter system should be cleaned at least once a week. Features like Steam, Flex Zone, and High Temp boost cleaning flexibility.
| Number of Wash Cycles | 7 (Auto, Heavy, Delicate, Refresh, Normal,1-Hour, Download Cycle) |
| Specialized Cycles | Download Cycle: Machine Clean, Express, Rinse, Pots & Pans, Casseroles, Glassware, Night Care |
| Number of Options / Functions | 6 (Flex Zone, Steam, High temp, Dry Boost, Night Dry, Remote Start) |
| Number of Spray Arms | 3 |
| Filter type (self-cleaning or manual/Removable Filter) | Manual – Removable Filter (need to be cleaned monthly) |
| Sanitization | TrueSteam® with Sanitization |
| Delay Start Timer | Yes (12 hours) |
| Targeted washing zones | QuadWash Pro™ (High-Pressure Jets) + Variable Spray Intensities |
| Soil sensor capability (Turbidity Sensor) | Yes (in Auto Cycle) |
| Option / Function # 01 | Steam: Adds steam at the start of the cycle to loosen tough food and improve cleaning performance |
| Option / Function # 02 | Flex Zone: Customizes wash intensity for upper or lower rack with soft or strong spray settings |
| Option / Function # 03 | High Temp: Raises the main wash temperature to improve the cleaning of heavily soiled dishes |
| Option / Function # 04 | Dry Boost: Extends heated drying time to enhance drying performance, especially for plastics |
| Option / Function # 05 | Night Dry: Runs the internal fan periodically to reduce condensation when dishes stay overnight |
| Option / Function # 06 | Remote Start: Allows remote start, monitoring, and control via the LG ThinQ® smartphone app |
💨 Drying Performance (4.7/5)
This model uses Dynamic Heat Dry™ for post-wash drying. Heat drying uses an internal heating element or system to actively warm the air inside the dishwasher after the wash cycle. This added heat speeds up moisture evaporation and dries dishes more quickly, but it consumes more energy than other methods.
Dynamic Dry™ uses heated air to remove moisture from dishes after the wash cycle. During the drying phase, the dishwasher generates heat inside the tub, allowing warm air to circulate and evaporate leftover water. This process helps dishes, utensils, and plastics dry more effectively, leaving them ready for unloading without excess moisture.
Rinse aid in a dishwasher is a liquid drying agent that improves drying performance and reduces water spots on dishes.
| Hot Air Drying / Heat Drying | Dynamic Heat Dry™ |
| Fresh Air Circulation for Moisture and Odor | Dynamic Heat Dry to actively circulate heated air and remove moisture |
| Auto Door Opening for Natural Drying | N/A |
| Rinse aid availability | Yes |
| Built-in Water Softener (For Hard Water) | N/A |
🔕 Noise Level (4.9/5)
At just 42 dB, the LG LDTH7972S is impressively quiet. To put the 42 dB dishwasher noise level into perspective, standing about five feet away from the dishwasher would sound like a whisper or the faint rustling of leaves on a calm day, so quiet that it might blend into the background, barely noticeable unless you focus on it.
In comparison, competitors like the SHARP SDW6767HS at 45 dB, SAMSUNG DW80B6061USAA at 44 dB, and KoolMore KM-DW2445-PR at 45 dB run slightly louder. While still considered quiet, they are a touch more noticeable in an open-concept kitchen.
⚡ Energy Efficiency (4.5/5)
This dishwasher is ENERGY STAR® certified (Energy Star-certified appliances meet strict energy efficiency standards set by the EPA, using less energy and reducing environmental impact). It operates on standard 120 Volts and consumes about 33.2 kWh per month with daily use of the Normal Cycle and Dynamic Heat Dry™ system.
A Normal Cycle with the Dynamic Heat Dry™ system, running 146 minutes, would use approximately 1.11 kilowatt-hours (kWh) of electricity. To put this into perspective, it’s like running a 1-ton AC at full load for about 66 minutes.
Energy consumption for running this dishwasher daily on Normal Cycle with Dynamic Heat Dry™ system for 30 days = 1.11 kWh/day × 30 days = 33.20 kWh/month.
This function lets you schedule a wash cycle to start at a later time. This feature is perfect for running the dishwasher during off-peak energy hours or ensuring clean dishes are ready when you need them.
| Energy Star rating | ENERGY STAR® |
| Estimated Energy Consumption / Wattage | 33.2 kWh/month for Daily use of Normal Cycle with Dynamic Heat Dry™ system |
| Voltage Required | 120 Volts |
| Delay Start Timer | Yes (12 hours) |
💧 Water Usage (4.7/5)
The LG LDTH7972S uses just 2.9 gallons (10.98 liters) per wash in the Normal cycle, which is impressively efficient for a full-size dishwasher. In comparison, the SHARP SDW6767HS uses 3.0 gallons (11.36 liters), the SAMSUNG DW80B6061USAA consumes 3.2 gallons (12.11 liters), and the KoolMore KM-DW2445-PR operates at 3.0 gallons (11.36 liters) per wash in Normal cycle. While the differences may seem small, over time they add up, especially for households running daily loads.
| Water Consumption (Per Cycle) | 2.9 gallons (10.98 Liters) per wash in Normal cycle |
🕒 Cycle Time (4.6/5)
This dishwasher offers flexible timing to suit different needs. The Auto cycle runs between 109 and 143 minutes, while the Normal cycle takes 119 and 144 minutes. Heavy handles tough messes in 162 minutes, and Delicate completes in 109 minutes. For quicker results, the 1 Hour cycle finishes in 60 minutes, and Refresh wraps up in just 15 minutes. Download cycles range from 60 to 180 minutes.
For a deeper dive into specific wash cycles, please refer to our section: “Specialized Wash Cycles.”
🍽️ Loading Capacity (4.8/5)
With 15 Place Settings (defined further down in this section), this dishwasher easily handles large family meals. It accommodates plates up to 12.5 inches and features three racks plus a dedicated silverware basket for organized loading. The layout feels spacious and practical, making it simple to separate utensils, dinnerware, and cookware without crowding.
| Number of Place Settings | 15 Place Settings |
| Dish or Plate Size: A Rack can Accumulate | 12.5 inches |
| Number of Racks | 3 |
| Special Utensil Holders or Baskets | Silverware Basket |
| Adjustable height of Rack | Height-adjustable upper rack, fully foldable upper and lower racks, with stemware holder and cup rack. |
15 – Place Setting Dishwasher:
A place setting refers to the dishes and utensils needed for one person’s meal. In dishwashers, it indicates the number of such sets the appliance can handle in one cycle.
A 15-place-setting dishwasher is designed to wash 15 dinner plates, 15 dessert plates, 15 soup bowls, 15 cups, 15 glasses, and 15 sets of cutlery in a single cycle.
In reality, the exact combination can vary due to item sizes and shapes. For example, you might fit 15 dinner plates, 15 dessert plates, 13 soup bowls, 13 cups, 11 glasses, and 15 sets of cutlery comfortably in a 15-place setting dishwasher.
🔒 Safety Features (4.5/5)
This model includes a Control Lock to prevent accidental button presses, especially helpful in homes with children. It is NSF-certified and CEE Tier 1-rated, reflecting strong sanitization standards and compliance with efficiency requirements. Additionally, the dishwasher features a non-slip base, ensuring it stays securely in place during operation. But do not place or use the machine on an unstable or uneven platform.
For safe operation, avoid placing the dishwasher near gas or electric burners. Also, do not use extension cords or adapter plugs.
| Child Lock – Safety Feature | Yes – Control Lock |
| Leak or Overflow Protection – Safety Feature | Built-In Leak Detection with Safety Float Switch |
| Non-Slipping Base | Yes |
🛠 Reliability and Durability (4.6/5)
Built with a stainless steel finish and interior tub, this dishwasher feels solid and well-constructed. Stainless Steel is a strong, corrosion-resistant material prized for its durability, sleek appearance, and ability to withstand high temperatures and exposure to moisture without rusting or degrading.
The dishwasher is sturdy, but avoid overloading the top surface with heavy items. It comes with a 1-year limited parts-and-labor warranty. To keep your warranty valid, use the product only as intended (not for commercial or non-household use), follow the instruction manual, and avoid misuse, mishandling, accidents, neglect, or abuse, as these are not covered.
| Finish Type / Material | Stainless Steel |
| Interior Tub Material | Stainless Steel |
| Warranty Duration | 1-year limited Parts and Labor warranty |
LG built-in dishwasher: Pre-programmed Wash Cycles
The LG LDTH7972S dishwasher features specialized cleaning cycles to tackle messes, ensuring your dishes shine every time. Here’s a quick breakdown of the available wash cycles:
| Cycle Name | Description | Water Usage (gallons) | Cycle Time (minutes) |
|---|---|---|---|
| Auto | Detects soil levels and automatically selects the optimal cycle. | 3 – 6 | 109 – 143 |
| Normal | Ideal for daily use and fully loaded dishwasher with normally soiled dishes. | 3 – 6 | 119 – 144 |
| Heavy | Designed for heavily soiled dishes and baked-on residue. | 7.3 | 162 |
| Delicate | Safely cleans delicate items like fine china and stemware. | 4.35 | 109 |
| 1 Hour | Cleans and dries lightly soiled dishes in just one hour. | 4 | 60 |
| Refresh | Warms and freshens up unused dishes without detergent. | 1.11 | 15 |
| Download Cycle | Includes custom options: Machine Clean, Express, Rinse, Pots & Pans, Casseroles, Glassware, Night Care. | 1 – 5 | 60 – 180 |
Detailed Pros And Cons Of LG LDTH7972S under-counter dishwasher
Pros
- ENERGY STAR® certified with a low 33.2 kWh monthly consumption on Normal cycle.
- Uses only 2.9 gallons (10.98 liters) per wash, helping conserve water.
- TrueSteam® with sanitization improves hygiene and tackles stubborn food residue.
- QuadWash Pro™ system with three spray arms enhances coverage and wash precision.
- Dynamic Heat Dry™ actively circulates heated air for improved drying results.
- Spacious 15 place settings capacity with three racks and an adjustable 3rd rack.
- Wi-Fi enabled with Alexa and Google Assistant compatibility via ThinQ®.
- 7 wash cycles plus downloadable specialty programs for flexible cleaning options.
- Stainless steel tub and exterior resist corrosion and retain heat efficiently.
- 12-hour delay start timer allows scheduled operation during preferred hours.
- Flex Zone and High Temp options improve customization for heavy or delicate loads.
Cons
- A manually removable filter requires regular cleaning for optimal performance.
- No built-in water softener for areas with hard water conditions.
- No auto-door-opening feature for natural post-cycle ventilation.
- Dynamic Heat Dry™ consumes more energy compared to passive drying systems.
LG LDTH7972S Dishwasher
Who Needs LG Tabletop Dishwasher?
- Eco-conscious users can appreciate its efficiency and energy-saving design without compromising performance
- Noise-sensitive individuals will enjoy quiet operation that blends easily into a peaceful home environment
- Smart home users looking for Wi-Fi control and app connectivity will find the smart features convenient and modern
- Busy families and frequent cooks who need a large capacity for everyday dishes and occasional hosting
- Style-conscious homeowners wanting a sleek stainless-steel finish that pairs well with contemporary kitchen decor
- People with specific cleaning needs who value flexible cycles and targeted washing zones for precision cleaning
- Parents with little ones who want added peace of mind from the NSF-certified sanitize function and child lock
- Anyone who prefers hands-off automation, from Delay Start to Remote Start via the LG ThinQ app
Who Can Skip Considering This Dishwasher?
- Households dealing with hard water may prefer models with a built-in water softener to avoid mineral residue.
- Shoppers looking for drawer-style or transparent viewing windows may find the traditional design less appealing.
- Those seeking ultra-lightweight or portable dishwashers may find its 110-pound build less suitable for mobility.
- Renters or short-term dwellers who require plug-and-play options without professional installation may need alternatives.
- Buyers who prefer passive drying methods may miss features like auto door opening or natural air drying.
- Budget-conscious users aiming for basic dishwashers with fewer cycles and features may find it more than they need.
Alternatives to LG LDTH7972S
SHARP SDW6767HS
The SHARP SDW6767HS delivers solid built-in performance with 6 wash cycles and a Smart Wash System featuring a thermal sensor for automatic adjustments. Its 4 spray arms, including a dedicated Power Wash zone, help tackle heavier soil effectively. Operating at 45 dB, it stays relatively quiet, while ENERGY STAR® certification supports efficient operation. With 14 place settings, flexible racks, Heat Dry plus Fan Dry options, and smart home connectivity, it blends modern control with practical cleaning power.
Read more about this model in our comprehensive SHARP SDW6767HS Dishwasher Review.
SHARP SDW6767HS Dishwasher
SAMSUNG DW80B6061USAA
The SAMSUNG DW80B6061USAA stands out with its 7 wash cycles and StormWash+™ targeted spray zone for tough lower-rack cleaning. Running at 44 dB, it offers quiet operation alongside ENERGY STAR® efficiency and about 3.2 gallons per Normal cycle. The AutoRelease™ Door Dry system enhances drying by automatically venting steam, while Wi-Fi connectivity and Smart Control add convenient monitoring. With 15 place settings and a stainless steel tub, it balances capacity, hygiene, and smart features nicely.
Learn more about this model by exploring our detailed SAMSUNG DW80B6061US Dishwasher Review.
SAMSUNG DW80B6061US Dishwasher
KoolMore KM-DW2445-PR
The KoolMore KM-DW2445-PR offers a panel-ready stainless-steel design for seamless kitchen integration. With 6 wash cycles, a Vortex Wash system, and sanitize functionality reaching 158°F (70°C), it focuses on strong core cleaning performance. Operating at 45 dB, it remains reasonably quiet, and ENERGY STAR® certification supports efficiency at about 3.0 gallons per Normal cycle. The heated drying system handles moisture effectively, though it skips Wi-Fi connectivity for a more traditional control approach.
Discover all the details in our thorough KoolMore KM-DW2445-PR Dishwasher Review.
KoolMore KM-DW2445-PR Dishwasher
Final Thoughts on LG LDTH7972S Dishwasher Review
After breaking down performance, wash cycles, competitive positioning, and real-world usability, the LG LDTH7972S clearly proves itself as a strong contender in the built-in dishwasher market. With 42 dB quiet operation, QuadWash Pro™ precision cleaning, TrueSteam® sanitization, and Dynamic Heat Dry™ performance, it balances power and refinement beautifully. Add in ENERGY STAR® efficiency, 15 place settings, and smart Wi-Fi connectivity, and it feels thoughtfully engineered rather than feature-stuffed.
It may sit in the upper mid-range category, but the cleaning consistency, drying strength, and premium stainless steel build justify the investment. If you want a modern, reliable dishwasher that delivers quiet performance and advanced cleaning technology without unnecessary complexity, the LG LDTH7972S is a smart choice for your kitchen.
LG LDTH7972S Dishwasher
Frequently Asked Questions (FAQs)
How quiet is the LG LDTH7972S during operation?
It runs at 42 dB, which sounds similar to a soft whisper in a quiet room.
How many place settings can the LG LDTH7972S handle?
It accommodates 15 place settings, offering spacious loading for full dinner loads and cookware.
Does the LG LDTH7972S dry dishes completely?
Yes, Dynamic Heat Dry™ circulates heated air to improve moisture removal, including better plastic drying.
How much water does the LG LDTH7972S use per cycle?
It uses about 2.9 gallons per Normal cycle, keeping water consumption efficient and controlled.
Does this dishwasher support smart home connectivity?
Yes, it connects via LG ThinQ® and works with Alexa and Google Assistant.
What wash cycles are available on this model?
It offers 7 cycles, including Auto, Heavy, Normal, Delicate, 1-Hour, Refresh, and downloadable options.
Is the LG LDTH7972S energy efficient for daily use?
Yes, it is ENERGY STAR® certified and averages about 33.2 kWh per month.
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