• 31 cu. ft. Capacity
  • Slim SpacePlus® Ice System
  • Door-in-Door® Easy Access
  • 10 Year Manufacturer's Limited Warranty on Linear Compressor
31 cu. ft. Super Capacity 3-Door French Door Refrigerator w/Door-in-Door®


    • Door Type
    • French 3-Door
    • Total Capacity
    • 30.5 cu. ft.
    • Size (W x H x D)
    • 35 3/4" 70 1/4" 36 1/4"


    • Refrigerator
    • 20.5 cu. ft.
    • Freezer
    • 10.0 cu. ft.
    • Total
    • 30.5 cu. ft.


    • Door-in-Door®
    • Yes
    • Sustainability Standard Certified (CSA)
    • Yes
    • Ice & Water Dispenser
    • Yes
    • Dispenser Type
    • Tall Ice & Water Dispenser®
    • Ice System
    • Slim SpacePlus®
    • Daily Ice Production
    • 3.5 lbs/3.8 IcePlus
    • Ice Storage Capacity
    • 3.2 lbs
    • Water Filtration System
    • Filter LT700P
    • Smart Cooling® Plus System
    • Yes
    • Multi-Air Flow Cooling
    • Yes
    • Temperature Sensors
    • 10
    • Linear Compressor
    • Yes
    • Fresh Air Filter
    • Yes, Air Filter LT120F
    • Dual Evaporator
    • Yes
    • Display Type
    • SmoothTouch™ Control/White LED
    • Temperature Controls
    • Electronic/Digital
    • Door Alarm
    • Yes
    • Child Lock
    • Yes
    • LoDecibel™ Operation
    • Yes
    • SmartDiagnosis™
    • Yes
    • Auto Closing Door Hinge
    • Yes
    • Freezer Door Type
    • Pull Drawer


    • No. of Shelves
    • 4 Split
    • Folding Shelf
    • 1
    • Cantilevered Shelves
    • Yes
    • Shelf Construction
    • Spill Protector™ Tempered Glass
    • Crisper Bins
    • 2 Humidity Crispers / 1 Bonus Drawer
    • Glide N’ Serve®
    • Yes
    • Refrigerator Light
    • Ceiling and Side LED


    • No. of Shelves/Bin
    • 6 (2 Adjustable Gallon Size)
    • Door-In-Door®
    • Yes
    • Door Bin Construction
    • Clear Bins with Deco


    • Door Type
    • Pull Drawer
    • Drawers
    • 3
    • DuraBase™ Solid Drawer Base
    • Yes
    • Drawer Divider
    • Yes
    • Ice Bin
    • Yes
    • Freezer Light
    • Premium LED
    • No. of Door Bins/Construction
    • Tilting Drawer / Plastic


    • Contour Door
    • Yes
    • Hidden Hinges
    • Yes
    • Surface
    • Stainless Steel
    • Back
    • Flush & Metal Cover Over Mechanical Parts
    • Available Colors
    • Stainless Steel (ST)
    • Handles
    • Matching Commercial Handles


    • Depth with Handles
    • 36 1/4"
    • Depth without Handles
    • 33 3/4"
    • Depth without Door
    • 29 1/2"
    • Depth (Total with Door Open)
    • 48 1/8"
    • Height to Top of Case
    • 68 7/8"
    • Height to Top of Door Hinge
    • 70 1/4"
    • Width
    • 35 3/4"
    • Width (Door Open 90° with Handle)
    • 45"
    • Width (Door Open 90° without Handle)
    • 40"
    • Door Edge Clearance with Handle
    • 4 7/8"
    • Door Edge Clearance without Handle
    • 2 1/8"
    • Installation Clearance
    • Sides 1/8", Top 1", Back 1"
    • Weight (Unit/Carton)
    • 340 lbs. / 380 lbs.
    • Carton Dimensions (WxHxD)
    • 38" x 73" x 39"


    • Limited Warranty
    • 1 Year Parts and Labor, 7 Years on the Sealed System, 10 Years on Linear Compressor
    • UPC
    • 048231784511

What people are saying

Rated 5 out of 5 by from Amazing design! Owned for 8 years. We have owned this fridge for 8 years and love it! Not only is it huge, it’s easy to clean and organize. The third door is great for grabbing items without letting all the cold air out. I will only buy LG appliances now.
Date published: 2022-09-21
Rated 1 out of 5 by from Freon Leak I bought this model brand new and for the last 10yrs it has leaked Freon and the compressor has been replaced twice. Now a month before the warranty expires LG does NOT was to honor it. So I am never buying LG products again.
Date published: 2022-09-19
Rated 5 out of 5 by from Holding up well after ten years LG 31 CU. FT. SUPER CAPACITY 3-DOOR FRENCH DOOR REFRIGERATOR W/DOOR-IN-DOOR. We have had this fridge for nine years and ten months. Last month the compressor failed. The warranty for the parts still applied and was replaced by LG with much less hassle than I expected. We had to pay for the labor but it was reasonable.
Date published: 2022-09-12
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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.

My water is not working but the Ice is. What could be the problem?

Asked by: UsaIce
If your LG 31 cu. ft. Super Capacity 3-Door French Door Refrigerator w/Door-in-Door®, Model # LFX31945ST is not dispensing water, it's possible that the water supply pressure simply isn't strong enough. That low pressure might be enough to supply water to the ice maker but not enough to supply water whenever you try to get it from the dispenser. Other causes may be a failed water inlet valve or a frozen water line or hose behind the refrigerator. It’s possible that the valve on the line leading to the water dispenser is faulty and not opening up fully, assuming it’s opening at all. You will need to have the refrigerator inspected by a qualified LG Service Technician or an LG Authorized Service Center...^Ivan
Answered by: Ivanf
Date published: 2022-06-06

Produce drawer seems to be freezing up, causing all the food into to freeze.  Any help with what to do? 

Asked by: Lisaboymom
When the refrigerator temperature in the LG 31 cu. ft. Super Capacity 3-Door French Door Refrigerator w/Door-in-Door®, Model # LFX3194ST is set too low cold air often settles at the bottom of the fridge. This results in the crisper drawer freezing food before other items are affected. Generally, a refrigerator's temperature should be between 37-42°F to avoid freezing but still keep food cool. Check the settings for the crisper drawers. You can control the amount of humidity in the moisture-sealed crispers by adjusting the control to any setting between HIGH and LOW. Freezing is more likely to occur when the refrigerator does not have enough food to absorb the cold air...^Ivan
Answered by: Ivanf
Date published: 2021-09-08

Hi. I need to replace LFX31945ST refrigerator door gasket for both side. Where can I order them? Thanks.

Asked by: Rck327
There should be a nameplate attached to the inner right wall in the refrigerator compartment of your LG 31 cu. ft. Super Capacity 3-Door French Door Refrigerator w/Door-in-Door®, Model # LFX31945ST that has the serial number and model number for the refrigerator stamped on it. There is a factory suffix on the end of the model # LFX31945ST.XXXXXXX. To order the door gasket for the refrigerator, you will need that factory suffix to make sure that you get the right door gasket for your refrigerator and you can order it from our Authorized Parts Distributor Affiliate, Encompass Parts (800) 432-8542,^IFV
Answered by: Ivanf
Date published: 2020-10-02

I need the plastic covering for the front of the fridge that covers the controls.  Are they available to replace.  The one on mine is peeling off. 

Asked by: Lchad
We hate to hear that, but would love to be able to help. We would be happy to see what's going on. Drop us a line on Twitter at @LGUSSupport or on Facebook so we can get more info and see what we can do. ^CP
Answered by: ChrisPSM
Date published: 2020-01-27

I need a replacement Linear Compressor to replace my failed one. (LFX31945ST). Can you give me the specification and direct me to a supplier? Please treat as urgent.

Asked by: AmetJ
That's not good! We're sorry to see that you've run into these issues with your refrigerator. We'll need to gather some additional details from you in order to see how we can best assist. Please reach out to a specialist via Twitter @LGUSSupport or via Facebook ^CP
Answered by: ChrisPSM
Date published: 2019-10-14

What's the source of water accumulating on the bottom of the refrigerator compartment? And, how do we stop it?

Asked by: Liberty541
Please contact LG Customer Support so that we can better investigate your issues and assist you towards a resolution. You can contact our Customer Support by any of the below options: Phone: 1-800-243-0000 Live Chat: Email: Facebook Messenger: Twitter: @LGUSSupport The LG Community Forum is also a great resource for getting help from other LG customers:
Answered by: ChrisPSM
Date published: 2019-07-21

The freezer temperature is reading -16C on the display. However, the lower compartment of the freezer is not keeping items frozen. How do I troubleshoot the problem? The unit is only 4 years old.

Asked by: President
Hello, hate to hear, sounds like you might need a technician. Please give us a call at 1-800-243-0000 or drop us a line on Twitter at @LGUSSupport or on Facebook at @LGUSSupport when you are with the unit. ^AC
Answered by: Amber C
Date published: 2018-04-12

What does er 1f mean 

Asked by: Jonnyboy2018
Hello, the IF error code indicates that the refrigerator has detected a problem with the refrigerator's ice maker fan. This can sometimes occur when frost or ice buildup occurs around the ice maker fan. This will require service, to set that up you can call in to 1-800-243-0000 or go to: ^AC
Answered by: Amber C
Date published: 2018-03-19
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