The LG LDTH7972S is the value pick that doesn't feel like one. At $949 it matches the Bosch 800 Series on noise (42 dBA), beats most everything in its class on warranty depth, and is the only machine in this comparison with a true steam generator. The lower rack has a documented cleaning dead-zone, but on the Heavy cycle with TrueSteam the LG removes over 99% of stains.
Full review
Cleaning Performance and the Dead-Zone Caveat
Reviewed measured the LG LDTH7972S removing more than 99% of stains on its Heavy cycle and called it 'incredible, effective cleaning'. The 1-Hour Wash & Dry cycle actually outperforms Normal by about 3 percentage points in their testing — an unusual result that suggests the higher-temperature short cycle is more forgiving than the longer thermal soak.
There is one real wart. Reviewed documented that items placed at the back-center of the lower rack come out with up to 70% of their staining still present during Normal cycles. The TrueSteam pre-treatment plus the Heavy cycle largely dissolves this issue, but the LG is the only machine in this comparison where rack placement is something you actively have to think about.
TrueSteam and Why It Helps
TrueSteam is the only true steam-injection system in this comparison. It uses a small boiler to inject actual steam into the cabinet at the start of the cycle, which softens baked-on starches and proteins before the wash arms even start spraying. Reviewed describes the system as 'eliminating water spots by up to 60%' and notes the steam helps loosen baked-on food.
In practice this matters most for casserole pans, baking dishes, and anything with stuck-on starch. The KitchenAid Heat Boost and Bosch PowerControl options approach the same problem with hotter water and targeted spray, respectively — TrueSteam is the more elegant solution and is genuinely the LG's headline differentiating feature.
Drying With Dynamic Heat Dry
LG calls their drying system Dynamic Heat Dry — it's a fan-circulated heat system similar to KitchenAid's Fan-Enabled ProDry. Reviewed describes it delivering 'bone dry results' on standard tableware, with plastics being the exception (they 'can occasionally retain small pools of water').
This puts the LG in the same drying category as the KitchenAid and meaningfully behind the Bosch 800's zeolite CrystalDry on plastic items. For a household that runs a lot of plastic food containers through the dishwasher, the Bosch is worth the upcharge; for most other dishware the LG is functionally equivalent.
Noise Level and Cabinet Quality
42 dBA puts the LDTH7972S at the same noise tier as the Bosch 800 Series and quieter than the KitchenAid KDTM604KPS. In a kitchen that opens to a living area, the LG runs as quietly as the Bosch — and at the LG's $400-lower price, that's a meaningful trade.
The cabinet itself is solidly built. The stainless tub uses LG's NeveRust treatment, the door has soft-close damping, and the PrintProof exterior resists fingerprints. Consumer Reports rates noise as 'very good'.
Smart Features and the ThinQ App
LG's ThinQ app is one of the better connected-appliance apps. It supports remote start/pause, cycle progress monitoring, push notifications when the load is done, leak detection alerts, and a 'Download Cycle' feature that lets you push specialty cycles (sports gear, baby bottles, glassware) to the dishwasher over Wi-Fi. Alexa and Google voice control both work.
This is a clear advantage over the KitchenAid KDTM604KPS, which has no Wi-Fi at all, and is roughly on par with Bosch Home Connect.
Warranty and Long-Term Cost
LG's warranty stack is one of the deepest in the built-in dishwasher category: 1 year on parts and labor, 2 years on the stainless tub and rack components, and a full 10 years on the direct-drive motor. The 10-year motor coverage is particularly valuable because the motor is the most expensive single component to replace.
Yale Appliance puts LG's 12-month service rate at 11.6%, which is higher than Bosch (7.8%), KitchenAid (7.4%), or Miele (5.6%). Yale specifically notes the rate is 'largely due to one fixable rack issue', which the long warranty stack helps absorb. Real-world reliability is below the German brands, but the warranty math evens out for most owners.
Where It Falls Short
The lower-rack dead zone is the main thing. On Normal cycles, dishes placed at the back-center bottom can come out with significant residual staining. The fix is to load dirty items toward the front of the lower rack and run Heavy + TrueSteam for the worst loads — but it's a workaround other machines in this comparison don't require.
Plastic drying is also a step behind the Bosch 800's CrystalDry. And the 1-year parts-and-labor warranty (vs Miele's longer coverage) means that anything that fails outside the motor or tub coverage is on you to fix after year one.
Who It's Best For
Buy the LDTH7972S if you want the quietest cabinet in the value tier, the only true steam generator at this price, deep warranty coverage on the motor, and a strong smart-home story — and you're willing to default to the Heavy cycle to dodge the Normal-cycle dead zone. For a family with $1,000 to spend, this is the best built-in dishwasher available.
Skip it if you primarily run light loads on Normal (the dead zone will bite), or if you want the absolute best plastic drying or the absolute lowest long-term service rate.
How It Compares to Alternatives
Against the Bosch 800 SHX78CM5N: LG matches on noise and Wi-Fi at $400 less, but loses on drying and on lower-rack cleaning consistency. Against the KitchenAid KDTM604KPS: LG is quieter (42 vs 44 dBA), cheaper, has Wi-Fi the KitchenAid lacks, and has steam; KitchenAid wins on third-rack capacity and on reliability.
Against the Miele G 7266 SCVi: LG is less than half the price and matches Miele on cycle count; Miele wins on long-term reliability, water softener for hard-water regions, and the AutoOpen door for drying. Against the Farberware FCD06ABBWHA: not really comparable — the Farberware is a 6-place countertop unit; the LG is full-size 15-place built-in.
Loading Flexibility and the QuadWash System
QuadWash Pro is LG's branding for four spray arms — two oscillating and two rotating — that deliver what LG claims is 38% more cleaning power than two-arm systems. In practice this means a more even spray pattern across the lower rack and meaningfully better coverage on the upper rack, where most three-arm systems are weakest. LG's marketing on the cleaning-power figure is unusually close to what independent reviewers measure in real-world tests.
The EasyRack Plus system pairs adjustable height on the middle rack with foldable tines on both lower and middle racks, plus the third-rack slider that lets you fit tall stemware below by sliding the middle rack up. Real-world loading flexibility is among the best in the value tier, and the rack accessories survive years of use without sagging. The interior LED lighting — a feature usually reserved for premium-tier dishwashers — turns on when the door opens and genuinely helps when unloading at night or in a dim kitchen.
Setup and the ThinQ App Experience
First-time ThinQ setup takes about 5 minutes: plug in the dishwasher, run the LG ThinQ app on your phone, scan the QR code inside the door, and the dishwasher joins your Wi-Fi. From there the app exposes remote start (after a one-time cabinet enable), cycle progress, energy usage tracking, and the Download Cycle library — currently 14 specialty cycles including sports gear, baby bottles, and a Pyrex-safe low-spray cycle. The app's notification system is opt-in per event type, so you can silence the generic 'cycle complete' chime and keep only the leak alert.
The leak detection feature is genuinely useful: the dishwasher has internal moisture sensors and a small pan under the cabinet that catches drips before they reach your floor. If it detects water, it shuts off the supply and pushes a notification to your phone. For a value-tier dishwasher this is a feature you'd usually only see in the $1,500+ price band. The ThinQ app also handles firmware updates over the air, which means the dishwasher gradually picks up new cycle options and bug fixes after purchase without you having to do anything.
Strengths
- +42 dBA noise level matches the Bosch 800 Series at $400 less
- +TrueSteam loosens baked-on food before the main wash, raising Heavy-cycle cleaning past 99%
- +10-year warranty on the direct-drive motor and 2 years on the stainless tub and racks — one of the deepest warranty stacks in the segment
- +1-hour wash-and-dry cycle finishes a full load in under 60 minutes
- +ThinQ Wi-Fi app with downloadable cycles, leak detection, and Alexa/Google voice
Watch-outs
- −Bottom-center of the lower rack can leave heavier stains during Normal cycles (Reviewed measured up to 70% residual staining there in testing)
- −Plastics still require a wipe after the dry cycle despite the Dynamic Heat Dry fan
- −Only 1 year on parts and labor — the deeper warranties are on specific components
How it compares
The single best value built-in in this comparison — matches the Bosch 800 SHX78CM5N on dBA and on Wi-Fi at $400 less. The Bosch and Miele G 7266 SCVi both clean more consistently across the full lower rack; the LG has a documented dead zone at the back-center bottom. Wins decisively over the KitchenAid KDTM604KPS on warranty depth (10-year motor coverage) and on cycle count (10 vs 5). Much louder and cycle-quicker than the Farberware FCD06ABBWHA countertop, as expected for a built-in.
Who this is for
At a glance: Budget-conscious families who want premium-quiet 42 dBA operation, TrueSteam, Wi-Fi smart features, and a strong warranty stack at a value-tier price, and who are willing to run the Heavy cycle to dodge the Normal-cycle dead zone.
Why you’d buy the LG LDTH7972S
- 42 dBA noise level matches the Bosch 800 Series at $400 less.
- TrueSteam loosens baked-on food before the main wash, raising Heavy-cycle cleaning past 99%.
- 10-year warranty on the direct-drive motor and 2 years on the stainless tub and racks — one of the deepest warranty stacks in the segment.
Why you’d skip it
- Bottom-center of the lower rack can leave heavier stains during Normal cycles (Reviewed measured up to 70% residual staining there in testing).
- Plastics still require a wipe after the dry cycle despite the Dynamic Heat Dry fan.
- Only 1 year on parts and labor — the deeper warranties are on specific components.
Rating sources
“Its Heavy cycle offers incredible, effective cleaning... achieves bone dry results on standard tableware”
“Performed very good in our wash test of heavily soiled dishes... performed very good in our noise tests”
“Only model with true steam generator; nearly silent at 42 dBA in typical operation”
Our 4.4 score is the average of these published ratings. Ratings marked * were derived from the reviewer’s written analysis or video transcript — the publisher didn’t print an explicit numeric score, so we inferred one from their own words. Click through to verify. More about methodology.
