LG Signature SDNTH981S 24 inch Smart Fully Integrated Dishwasher with 16 Place Settings, FlushFit, QuadWash, 1-Hour Wash and Dry Cycle, and LED Back-Panel Lighting in Printproof Stainless Steel
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Top Brand
LG
Why this brand stands out for our shoppers
Iconic & Trusted
One of America's most recognizable brands with extremely good service support coast to coast.
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Consumer Reports standouts across laundry and refrigeration that shoppers consistently love.
Low Returns
Fan-favorite reliability keeps return rates low across LG's broad appliance lineup.
LG Signature SDNTH981S Features
Features:
- An effortless FlushFit™ design creates a clean, uninterrupted look
- A refined 1‑hour wash and dry cycle that leaves dishes beautifully ready for the next course
- Experience sophisticated LoDecibel™ operation (39 dB) designed for quiet, refined living
- LED back-panel lighting that highlights every detail with ease
- QuadWash® Pro delivers 38% more cleaning power with multi‑angle jets
- Dynamic Heat Dry™ and AutoVent™ Dry work together for beautifully finished dishes
- BlastZone™ Bottle Wash brings focused cleaning power to bottles and demanding cookware
Why Buy LG SIGNATURE SDNTH981S FlushFit™ Dishwasher
- Seamless built-in luxury design: The FlushFit™ installation creates a clean, uninterrupted look that blends perfectly with cabinetry, ideal for modern high-end kitchens.
- Powerful, next-level cleaning performance: QuadWash® Pro uses multi-angle spray arms for up to 38% more cleaning power, helping remove tough food residue without pre-rinsing.
- Fast 1-hour wash and dry cycle: Perfect for busy households or entertaining, delivering clean and dry dishes quickly without sacrificing performance.
- Ultra-quiet operation: At just 39 dB, LoDecibel™ technology ensures whisper-quiet performance, making it ideal for open-concept kitchens.
- Advanced drying system: Dynamic Heat Dry™ with AutoVent™ Dry improves airflow and moisture release, leaving dishes ready to use without towel drying.
- Targeted cleaning for tough items: BlastZone™ Bottle Wash provides focused high-pressure cleaning for bottles, cookware, and hard-to-clean items.
- Premium interior experience: LED back-panel lighting enhances visibility and adds a sophisticated, high-end feel every time you open the dishwasher.
Frequently Asked Questions
Q: What is the SDNTH981S dishwasher?
A: The SDNTH981S is a premium LG SIGNATURE FlushFit™ dishwasher designed for high-end kitchens, combining ultra-quiet performance, advanced cleaning technology, and a seamless built-in look.
Q: What makes FlushFit™ design special?
A: FlushFit™ allows the dishwasher to sit perfectly flush with cabinetry, creating a clean, uninterrupted built-in appearance ideal for modern kitchens.
Q: How quiet is this dishwasher?
A: It operates at just 39 dB with LoDecibel™ technology, making it extremely quiet and well suited for open-concept living spaces.
Q: How effective is the cleaning performance?
A: The QuadWash® Pro system uses multi-angle spray arms to deliver up to 38 percent more cleaning power, helping remove tough food residue without pre-rinsing.
Q: Does it dry dishes well?
A: Yes. Dynamic Heat Dry™ combined with AutoVent™ Dry improves airflow and moisture removal, leaving dishes dry and ready to use.
Q: What is the 1-hour wash and dry cycle?
A: It is a fast cycle designed to clean and dry dishes in about one hour, making it ideal for quick turnarounds during busy days or entertaining.
Q: Does it have special cleaning zones?
A: Yes. BlastZone™ Bottle Wash provides targeted high-pressure cleaning for bottles, cookware, and heavily soiled items.
Q: Is it energy efficient?
A: Yes. The dishwasher is ENERGY STAR® certified, helping reduce energy consumption while maintaining strong performance.
Q: Does it have smart features?
A: Yes. It includes Wi-Fi connectivity with LG ThinQ®, allowing you to monitor cycles and receive notifications remotely.
Q: What is the capacity and interior setup?
A: It features a third rack and adjustable racks, allowing flexible loading for utensils, cookware, and larger items.
Pros and Cons of LG SIGNATURE SDNTH981S FlushFit™ Dishwasher
Pros
- Seamless FlushFit™ design: Installs flush with cabinetry for a clean, built-in look that elevates modern kitchen aesthetics.
- Powerful cleaning performance: QuadWash® Pro multi-angle jets deliver up to 38% more cleaning power, helping remove tough residue without pre-rinsing.
- Fast 1-hour wash and dry cycle: Quickly delivers clean, ready-to-use dishes, ideal for busy households or entertaining.
- Ultra-quiet operation (39 dB): LoDecibel™ technology ensures whisper-quiet performance, perfect for open-concept living.
- Advanced drying system: Dynamic Heat Dry™ with AutoVent™ Dry improves airflow and moisture removal for better drying results.
- Targeted cleaning zones: BlastZone™ Bottle Wash provides focused power for bottles, cookware, and hard-to-clean items.
- Premium interior lighting: LED back-panel lighting enhances visibility and adds a high-end feel.
Cons
- Premium price point: As part of the LG SIGNATURE line, it is significantly more expensive than standard dishwashers.
- Limited feature control via app: Smart features focus more on monitoring and alerts rather than full remote control.
- Overkill for basic needs: Advanced features may be unnecessary for users who just need simple dishwashing functionality.
- Installation requirements: FlushFit™ design may require precise installation for best results.
Conclusion
The LG SIGNATURE SDNTH981S FlushFit™ Dishwasher is an excellent choice for homeowners seeking a luxury, ultra-quiet, and high-performance dishwasher with cutting-edge cleaning and drying technology. Its seamless built-in design, powerful QuadWash® Pro system, and fast 1-hour cycle make it ideal for modern kitchens and frequent entertaining. While the premium price and advanced features may not suit every buyer, it stands out as a top-tier dishwasher for those prioritizing design, performance, and convenience.
LG Signature SDNTH981S Specifications
| Width | |
| Exterior Width | 24" |
| Width | 23 3/4" |
| Cutout Width | 24" |
| Depth | |
| Depth | 23 3/4" |
| Cutout Depth | 24" |
| Height | |
| Height | 33 5/8" |
| Cutout Height | 33 7/8" |
LG Signature SDNTH981S Overview
Features:
- An effortless FlushFit™ design creates a clean, uninterrupted look
- A refined 1‑hour wash and dry cycle that leaves dishes beautifully ready for the next course
- Experience sophisticated LoDecibel™ operation (39 dB) designed for quiet, refined living
- LED back-panel lighting that highlights every detail with ease
- QuadWash® Pro delivers 38% more cleaning power with multi‑angle jets
- Dynamic Heat Dry™ and AutoVent™ Dry work together for beautifully finished dishes
- BlastZone™ Bottle Wash brings focused cleaning power to bottles and demanding cookware
Why Buy LG SIGNATURE SDNTH981S FlushFit™ Dishwasher
- Seamless built-in luxury design: The FlushFit™ installation creates a clean, uninterrupted look that blends perfectly with cabinetry, ideal for modern high-end kitchens.
- Powerful, next-level cleaning performance: QuadWash® Pro uses multi-angle spray arms for up to 38% more cleaning power, helping remove tough food residue without pre-rinsing.
- Fast 1-hour wash and dry cycle: Perfect for busy households or entertaining, delivering clean and dry dishes quickly without sacrificing performance.
- Ultra-quiet operation: At just 39 dB, LoDecibel™ technology ensures whisper-quiet performance, making it ideal for open-concept kitchens.
- Advanced drying system: Dynamic Heat Dry™ with AutoVent™ Dry improves airflow and moisture release, leaving dishes ready to use without towel drying.
- Targeted cleaning for tough items: BlastZone™ Bottle Wash provides focused high-pressure cleaning for bottles, cookware, and hard-to-clean items.
- Premium interior experience: LED back-panel lighting enhances visibility and adds a sophisticated, high-end feel every time you open the dishwasher.
Frequently Asked Questions
Q: What is the SDNTH981S dishwasher?
A: The SDNTH981S is a premium LG SIGNATURE FlushFit™ dishwasher designed for high-end kitchens, combining ultra-quiet performance, advanced cleaning technology, and a seamless built-in look.
Q: What makes FlushFit™ design special?
A: FlushFit™ allows the dishwasher to sit perfectly flush with cabinetry, creating a clean, uninterrupted built-in appearance ideal for modern kitchens.
Q: How quiet is this dishwasher?
A: It operates at just 39 dB with LoDecibel™ technology, making it extremely quiet and well suited for open-concept living spaces.
Q: How effective is the cleaning performance?
A: The QuadWash® Pro system uses multi-angle spray arms to deliver up to 38 percent more cleaning power, helping remove tough food residue without pre-rinsing.
Q: Does it dry dishes well?
A: Yes. Dynamic Heat Dry™ combined with AutoVent™ Dry improves airflow and moisture removal, leaving dishes dry and ready to use.
Q: What is the 1-hour wash and dry cycle?
A: It is a fast cycle designed to clean and dry dishes in about one hour, making it ideal for quick turnarounds during busy days or entertaining.
Q: Does it have special cleaning zones?
A: Yes. BlastZone™ Bottle Wash provides targeted high-pressure cleaning for bottles, cookware, and heavily soiled items.
Q: Is it energy efficient?
A: Yes. The dishwasher is ENERGY STAR® certified, helping reduce energy consumption while maintaining strong performance.
Q: Does it have smart features?
A: Yes. It includes Wi-Fi connectivity with LG ThinQ®, allowing you to monitor cycles and receive notifications remotely.
Q: What is the capacity and interior setup?
A: It features a third rack and adjustable racks, allowing flexible loading for utensils, cookware, and larger items.
Pros and Cons of LG SIGNATURE SDNTH981S FlushFit™ Dishwasher
Pros
- Seamless FlushFit™ design: Installs flush with cabinetry for a clean, built-in look that elevates modern kitchen aesthetics.
- Powerful cleaning performance: QuadWash® Pro multi-angle jets deliver up to 38% more cleaning power, helping remove tough residue without pre-rinsing.
- Fast 1-hour wash and dry cycle: Quickly delivers clean, ready-to-use dishes, ideal for busy households or entertaining.
- Ultra-quiet operation (39 dB): LoDecibel™ technology ensures whisper-quiet performance, perfect for open-concept living.
- Advanced drying system: Dynamic Heat Dry™ with AutoVent™ Dry improves airflow and moisture removal for better drying results.
- Targeted cleaning zones: BlastZone™ Bottle Wash provides focused power for bottles, cookware, and hard-to-clean items.
- Premium interior lighting: LED back-panel lighting enhances visibility and adds a high-end feel.
Cons
- Premium price point: As part of the LG SIGNATURE line, it is significantly more expensive than standard dishwashers.
- Limited feature control via app: Smart features focus more on monitoring and alerts rather than full remote control.
- Overkill for basic needs: Advanced features may be unnecessary for users who just need simple dishwashing functionality.
- Installation requirements: FlushFit™ design may require precise installation for best results.
Conclusion
The LG SIGNATURE SDNTH981S FlushFit™ Dishwasher is an excellent choice for homeowners seeking a luxury, ultra-quiet, and high-performance dishwasher with cutting-edge cleaning and drying technology. Its seamless built-in design, powerful QuadWash® Pro system, and fast 1-hour cycle make it ideal for modern kitchens and frequent entertaining. While the premium price and advanced features may not suit every buyer, it stands out as a top-tier dishwasher for those prioritizing design, performance, and convenience.
LG Signature SDNTH981S Specifications
| Width | |
| Exterior Width | 24" |
| Width | 23 3/4" |
| Cutout Width | 24" |
| Depth | |
| Depth | 23 3/4" |
| Cutout Depth | 24" |
| Height | |
| Height | 33 5/8" |
| Cutout Height | 33 7/8" |
LG Signature SDNTH981S Rebates
LG Studio and Signature ThinQ Warranty 1 Year Extension - April 2026
LG ThinQ 2+1 Year Limited Warranty Promotion
Enjoy a total of 2 year limited warranty on select LG Studio and LG Signature appliances
Purchase an eligible LG Studio/LG Signature-branded product(s) between April 9 - 12/31/2026 and you may be able to redeem an additional 1 year limited warranty with the ThinQ app (valued at $185)
See Rebate for more details
May take up to 14 days for registered product warranty to reflect 2 years on the LG ThinQ app
LG Signature NECO Buy More Save More - Up to $1000 May 2026
LG Signature NECO Buy More Save More Rebate
Get up to $1000 prepaid MasterCard back
PURCHASE ANY 6 FULL SIZE KITCHEN APPLIANCES FOR A $800 REBATE
PURCHASE ANY 4 FULL SIZE KITCHEN APPLIANCES FOR A $500 REBATE
PURCHASE AN ELIGIBLE LAUNDRY CENTER OR AN ELIGIBLE WASHER AND DRYER PAIR FOR A $200 REBATE (ALL PRODUCTS MUST BE ON ONE INVOICE)
Valid between
May 13, 2026 - June 10, 2026
Claims must be submitted online by
August 10, 2026
.
LG Signature SDNTH981S Warranty & Returns
Warranty Information
2 Year Parts and Labor, 5 Year Parts on Control Board and Rack, 10 Year on Direct Drive Motor
Return Policy
Returns accepted within 30 days of delivery. Item must be in original packaging and unused condition.
LG Signature SDNTH981S Why Us
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Free 1 Year Extended Warranty
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3 Level Rebate
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Choose a 3- or 5-year protection plan—get 50% back if you don't use it.
Price Match Guarantee
If you find a lower price on an identical item from a local competitor or select online retailers, we will match it.