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31 cu. ft. Super Capacity 3-Door French Door Refrigerator w/Door-in-Door®

  • LFX31945ST

  • Stainless Steel
  • Discontinued Product

Key Features

  • 31 cu. ft. Capacity
  • Slim SpacePlus® Ice System
  • Door-in-Door® Easy Access
  • 10 Year Manufacturer's Limited Warranty on Linear Compressor
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 Compact Filter LT700P
Smart Cooling® Plus System Yes
Multi-Air Flow Cooling Yes
Temperature Sensors 10
Linear Compressor Yes
Fresh Air Filter Yes
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 4 out of 5 by from Nice design, easy to use I really like this fridge, despite the fact that one month in I had to have a motor replaced and it took a week to do it. When the tech came out, he fixed the motor but somehow disconnected or broke the light inside the freezer. I can't be bothered having it repaired since getting a repair person to do it is a hassle.I also can't get the air filter cap off and I'm not calling a tech and paying someone just for that. Despite all that, it works well, love the inside lighting, I love the outside door that just lets me get small items.
Date published: 2016-06-13
Rated 5 out of 5 by from 3 Years and still AWESOME!!!! We purchased this refrigerator 3yrs ago, and though it wasn't cheap, it was well worth the price. I love EVERYTHING about it, including interior space, features and just overall look. Still get compliments on how nice it is. ONLY drawback is the water/ice dispenser... People always push the water dispenser button while holding glass under the ice dispenser and sure enough water comes streaming out on the floor. Took a while for me to understand why people kept making this mistake, but given most refrigerators dispense ice and water from the same area most thought same of ours. Now we educate everyone on how to use it.
Date published: 2016-06-04
Rated 2 out of 5 by from Lots of Room - Love the Extra Door I purchased the LFX31945ST on 12/31/2012. I have had to have it serviced twice already and I don't believe it still runs correctly. For the price, I expected a higher quality product. I also purchased a HE Top Loading LG Washer - WT5001CW. My 4 year extended warranty expired on 3/22/2016 - the washer expired on 5/22/2016. Again, not what I expected. I'm done with LG products.
Date published: 2016-05-24
Rated 5 out of 5 by from I can see! I can see everywhere in this refrigerator due to the great led lights. No more food gremlins hiding in dark places! Other than that, I am very pleased overall with the features of the product. Love the door- in- door! The bottom freezer has ample room as does the refrigerator section. My only criticism is that we couldn't get it without an icemaker/ water dispenser. We would have preferred the additional door shelf space.
Date published: 2016-05-17
Rated 5 out of 5 by from Super Unit I have had this fridge for almost two years and couldn't be happier with the performance. Loads of space and lots of ways to pack in food. I agree with the ice production being a bit slow and the water dispenser could use more pressure, but definitely would buy again.
Date published: 2016-05-17
Rated 2 out of 5 by from Makes a very loud popping noise when defrosting I bought this refrigerator a little over a year ago. My wife and I were very excited about the door in door feature and the convenience of it, but the noise it makes when it is in the defrost cycle is shocking. It is very loud and it makes this noise throughout the defrost cycle. You can hear from the far end of the house. I contacted LG when it was in warranty and they said that the noise was normal, but I can't believe the decibels this unit puts out is normal. It sounds like a train wreck.
Date published: 2016-05-16
Rated 5 out of 5 by from Love this fridge Only thing with this, if you use a lot of ice you will want to supplement, doesn't make it fast, and water comes out in a smaller stream otherwise I love it!!
Date published: 2016-04-24
Rated 5 out of 5 by from great Refridge this refrigerator is one of the best i've every owned, the space fits my 6 kid household. Also the features are great. the smart technology on it is super. this item has made life much easier in my household. it empress so that we went out and bought the stove microwave dishwasher washer and dryer, when they LG stands for (Lifes good) it really is now. Thanks LG
Date published: 2016-04-07
  • 2016-06-24T12:19CST
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We're here to support you with our product.

View LFX31945ST Product Support

Contact us for any support inquiries.


Ask your questions. Share your answers.
Please first review the detailed product information and help guides in the Product Support section for this product prior to posting a question.

We have been getting a ER FF led msg on panel. What does that mean?

Asked by: Nwebr
Hello , The code generally indicates possible freezer fan repair however you can feel free to call our customer service line for further assistance at 877-543-8325
Answered by: NeilE
Date published: 2016-05-18

Ice is forming on food in frig. Moved temp to 40 from 37. What else should we do?

Asked by: Colby4us
We regret the trouble you have experienced with this refrigerator. It is difficult to determine the cause of this problem with the information provided. Please contact our Customer Interactive Center at 800-243-0000 for further assistance.
Answered by: ShenaS
Date published: 2016-05-03

Er in the refrigerator led and If in the freezer led on the left front door. What's up?

Asked by: LG Jeff
The ER IF code is indicative of a problem with the Icemaker Fan or its motor. This can potentially be resolved by allowing the refrigerator to thaw for about 4 hours, and then reconnecting it. If it does not, then the unit will likely require service. To make service arrangements, you may either contact our Customer Interactive Center at 800-243-0000, or you can check our Repair Provider Lookup on our website, at
Answered by: ShenaS
Date published: 2016-04-28

Where can you buy the plastic bottom shelf thing for the inside refrigerator it's the super capacity 3 door French door refrigerator with door in door stainless steel 

Asked by: Mocha432
Parts and accessories can be obtained through our parts distributor, MCM Electronics. Their contact number, for placing orders and pricing information, is 800-824-9491. You can also use their website, at
Answered by: NeilE
Date published: 2016-04-07

The ice maker is not dumping ice. Also the ice cream is not frozen

Asked by: Bunkoden
We regret the trouble you have experienced with this refrigerator. It is suggested to contact our Customer Interactive Center at 800-243-0000 that we might run the Smart Diagnosis function.
Answered by: ShenaS
Date published: 2016-03-16

What should the freezer setting be used

Asked by: JDKC1219
It is recommended that, when the unit is first installed, the freezer temperature should be set to 0 degrees Fahrenheit, while the refrigerator should be set to 37 degrees. Once the unit reaches these temperatures, you may change the setting to however you would prefer.
Answered by: NeilE
Date published: 2016-03-01

Bought this about a month ago. All the sudden the fridge will not stop beeping. I am not sure why but the doors are all shut and everything is cold. any help would be great.

Asked by: xman2yman
We regret the inconvenience you have experienced. Generally, the only beep in this system would be related to the doors being open to some extent. If this is not the case, then the refrigerator may require service. To make service arrangements, you may either contact our Customer Interactive Center at 800-243-0000, or you can check our Repair Provider Lookup on our website, at
Answered by: NeilE
Date published: 2016-03-01

Im getting Er message on display

Asked by: Gina gina
We regret the trouble you have experienced with this refrigerator. An ER indication is an error message. There are generally some additional letters posted, indicating what type of error this might be. Please contact our Customer Interactive Center at 800-243-0000 for assistance with this code.
Answered by: NeilE
Date published: 2016-02-01
  • 2016-06-24T12:37CST
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