LG SIGNATURE 31 cu. ft. Smart wi-fi Enabled InstaView™ Door-in-Door® Refrigerator

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  • InstaView™ Door-in-Door®
  • Auto Open Door™
  • Textured Steel™ Finish
  • Fresh Filter
  • Custom Chill™
LG SIGNATURE 31 cu. ft. Smart wi-fi Enabled InstaView™ Door-in-Door® Refrigerator


    • Door Type
    • French 4-Door
    • Refrigerator Type
    • InstaView™ Door-in-Door®
    • Series
    • SmartThinQ®
    • Yes
    • Ice & Water Dispenser
    • Yes


    • Refrigerator
    • 18.80 cu. ft.
    • Freezer
    • 12.00 cu. ft.
    • Total
    • 30.8 cu. ft.


    • Multi Air Flow Cooling
    • Yes
    • Temperature Sensors
    • 7
    • Fresh Air Filter
    • Yes, Air Filter LT120F
    • Dual Evaporator
    • Yes
    • Water Filtration System
    • Compact Filter LT800P
    • Ice & Water Dispenser
    • Yes
    • Dispenser Type
    • Integrated Tall Ice & Water Dispenser® with Measured Fill
    • Ice System
    • Slim SpacePlus®
    • Linear Compressor
    • Yes
    • Display Type
    • White Pinhole / White LED
    • Daily Ice Production
    • 4.5 lbs / 4.9 (IcePlus™)
    • Ice Storage Capacity
    • 3.0 lbs
    • Door-in-Door®
    • Yes
    • ENERGY STAR® Qualified
    • Yes (807 kWh/Year)
    • InstaView™Door-in-Door®
    • Yes
    • ColdSaver™ Panel
    • Yes
    • Cooling System
    • Top Cooling


    • No. of Shelves
    • 4 Split (2 Slide Out / 2 Fixed)
    • No. of Door Bins
    • 3 Piece (Clear & Steel Bar)
    • Cantilevered Shelves
    • Yes
    • Shelf Construction
    • Tempered Glass with LED Light
    • Crisper Bins
    • 2
    • Refrigerator Light
    • Premium LED (Ceiling and Shelves)
    • EasyReach™ Bins
    • Yes
    • Handle
    • Pocket
    • Undershelf Lighting
    • Yes


    • Drawers
    • 6 Drawers
    • Freezer Light
    • Premium LED
    • Door Bins
    • 6 /2 Piece (Clear)
    • Door Type
    • Side Swing
    • Handle
    • Pocket


    • Depth with Handles
    • 36 5/8"
    • Depth without Handles
    • 36 5/8"
    • Depth without Door
    • 30 7/8"
    • Depth (Total with Door Open)
    • 49 1/2"
    • Height to Top of Case
    • 69"
    • Height to Top of Door Hinge
    • 70 1/4"
    • Width
    • 35 3/4"
    • Width (Door Open 90˚ with Handle)
    • 40 1/3"
    • Width (Door Open 90˚ without Handle)
    • 40 1/3"
    • Installation Clearance
    • Sides 1/8", Top 1", Back 2"
    • Weight (Unit/Carton)
    • 483 lbs / 516 lbs
    • Carton Dimensions (WxHxD)
    • 38'' x 73'' x 39''


    • Available Colors
    • Textured Steel™
    • Hidden Hinges
    • Yes
    • Surface
    • Smooth
    • Back
    • Flush & Metal Cover Over Mechanical Parts
    • Door Rim
    • Glass/Chrome (Hairline)


    • Temperature Controls
    • Electronic/Digital
    • Door Alarm
    • Yes
    • LoDecibel™ Quiet Operation
    • Yes
    • SmartDiagnosis™
    • Yes
    • Auto Closing Door Hinge
    • Yes
    • Child Lock
    • Yes
    • Wifi Eclipse Display
    • Yes
    • Auto Open Drawer™ (Freezer)
    • Yes
    • Auto Open Door™
    • Yes


    • Limited Warranty
    • 1 Year Parts and Labor, 5 Years on the Sealed System (Parts & Labor), 10 Years on Linear Compressor (Parts: 10 years / Labor 5 years)
    • UPC
    • 048231787635

What people are saying

Rated 3 out of 5 by from Great feature, unreliable, too many problems; Great feature, unreliable, too many problems. I have had several problems from early on. In 2018 the instaview would turn on with slight sound. Technician replaced the door twice, until someone told him to add an extra layer of acoustics. In 2018 he auto drawer of freezer stopped working and I had to call for service and some circuit boards were replaced. In 2020 the refrigerator and freezer stopped working normally, the technician came over and replaced the condenser and compressor. etc... I have been able to connect the dishwasher and oven to LGThiq, but so far I have not been able to connect the refrigerator to LGThiq. However, customer service has been very good and responsive; excellent customer service.
Date published: 2021-03-21
Rated 5 out of 5 by from Keeps Produce Fresh Longer! When we rebuilt our home in 2019 we had the opportunity to create a deeper spot for a larger fridge rather than shallow counter depth which holds less. In searching, the LG Signature 3186 had the largest capacity in the market. The custom kitchen cabinets were designed around it, and we’re so glad we did! The advanced features, interior lighting and beauty made this one of our best decisions.
Date published: 2021-03-20
Rated 2 out of 5 by from I brought this 18 mts ago the ice maker start giving problems the fridge is making hissing noise and not cooling waiting for service for about 2wks
Date published: 2020-08-03
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Ask your questions. Share your answers.
Please review the detailed product information and help guides in the
Product Support section for this product prior to posting a question.

Any plans to make this in Black stainless steel? Would be nice to match my all my other LG appliances.

Asked by: Wood24
We appreciate your interest in this unit. At this time, we do not have information regarding future models.
Answered by: ChrisPSM
Date published: 2019-12-23

Hi we just purchased the 31 cu ft version , I was just wondering if anyone can tell me if the sides are in stainless steel ?

Asked by: Yachtnutz
No, the sides of this refrigerator are not stainless steel.
Answered by: ChrisPSM
Date published: 2019-08-05

Greetings- I'm not sure the specific question has been asked or answered here yet. Will the LG Signature LUPXS3186N Model be available with the ThinQ™ Door along with the metal interior?

Asked by: Tater65
Greetings to you too Tater65! Thank you for your inquiry and for your interest in the ENERGY STAR® Qualified LG SIGNATURE 31 cu. ft. Smart wi-fi Enabled InstaView™ Door-in-Door® Refrigerator, Model # LUPXS3186N. Regrettably, LG has not made any announcements about any plans to release a version of this refrigerator that would feature the ThinQ™ Door along with the CoolGuard™ stainless steel panel interior that helps maintain cold air while adding a premium look. If LG has plans on that they will typically put out a press release announcing it...^IFV
Answered by: Ivanf
Date published: 2019-07-21

Does this model come in any other sizes? I have a cabinet above my current refrigerator and the height at the top of the cabinet is 70".

Asked by: colek
Hi Colek. Regrettably, the ENERGY STAR® Qualified LG SIGNATURE 31 cu. ft. Smart wi-fi Enabled InstaView™ Door-in-Door® Refrigerator, Model # LUPXS3186N does not come in other sizes. What you need is the measurement from the floor to the bottom of the cabinet above your current refrigerator and the depth of that cabinet. Typically, standard overhead cabinets are 12 or 13 inches deep except for microwave cabinets which are 15 to 18 inches deep so they can accommodate most standard microwave sizes. Cabinets placed above a refrigerator are also slightly deeper and typically measure 24 inches deep. This refrigerator has a height of 69" to the top of its case and the recommended installation clearance above the refrigerator is 1 inch so if your cabinet is a standard cabinet with a depth of 24" and has a 70" clearance between the floor and the bottom of the cabinet, it will fit. It has a height of 70 1/4" to the top of the door hinges, but again, if your cabinet has a depth of 24", that will not be an issue...^IFV
Answered by: Ivanf
Date published: 2019-05-29

What microwave do you sell that matches this line? None of the others are listed as "textured steel" and no where around me has any of these in stock to look at, so I need to find a match before I purchase

Asked by: Robelpa
Regrettably, we currently don't have any microwave ovens that have the same Textured Steel™ Finish as the LG SIGNATURE 31 cu. ft. Smart wi-fi Enabled InstaView™ Door-in-Door® Refrigerator, Model # LUPXS3186N...^IFV
Answered by: LGJoel
Date published: 2019-02-14

Does the software on this fridge get updated to stay current? As in, will it have the same software features as the upcoming Instaview ThinQ refrigerator (LNXS30996D)?

Asked by: Sean42
Hi Sean42. Your interest in our refrigerators is greatly appreciated. Regrettably, LG does not divulge detailed information on the software for its refrigerators and we cannot advise you about if the software features on this LG SIGNATURE 31 cu. ft. Smart wi-fi Enabled InstaView™ Door-in-Door® Refrigerator, Model # LUPXS3186N will be the same as those for the LG InstaView ThinQ™ Refrigerator, Model # LNXS30996D. What we can assure is that as long as the refrigerators are connected to your network, they can always receive software upgrades to keep them current. Both refrigerators are currently in production so we do not have the full specifications yet, but as production nears completion, the product information pages for each refrigerator will be updated to reflect their full specifications. Thank you for your patience and understanding...^IFV
Answered by: LGJoel
Date published: 2019-01-31

What are in inside deminsions of the freezer drawers? Will pizza boxes fit inside the freezer drawers?

Asked by: CourtneyG82
The dimensions of the freezer drawers are as follows: Part MJS63873401 (TOP FREEZER DRAWER), Front is 13 ¼ Side is 19” Corner is 4 ¼ Part MJS63873501 (BOTTOME FREEZER DRAWER) Front 13 ½ Side is 16” Corner is 5”and 1/8 ^CP
Answered by: ChrisPSM
Date published: 2018-04-08

 My refrigerator needs new doors with the ice  dispenser. Do you sell just the doors 

Asked by: Frank la spisa
Any parts or accessories for this ENERGY STAR® Qualified LG SIGNATURE 31 cu. ft. InstaView™ Door-in-Door® Refrigerator, Model # LUPXS3186N can be ordered from any of LG's Regional Authorized Parts Distributors located in the Western, Central and Eastern regions of the U.S. The one closest to you in your region is: Encompass Parts Distribution 775 Tipton Industrial Dr. Suite F Lawrenceville, GA 30046 Sales: 866-779-7906 Fax: 800-552-1431 The other Parts Distributors can be found at^IFV
Answered by: LGJoel
Date published: 2018-06-28
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