LG LFX25991ST/02 refrigerator Parts

The LG LFX25991ST is a 36-inch class French door, bottom-mount refrigerator. For exact cabinet and door-clearance measurements (width, depth, height, and door-open depth), we recommend confirming the specifications in the LFX25991ST owner's manual.

Typical size details you should confirm

For a 36-inch class LG French door bottom-mount refrigerator like the LFX25991ST, the key measurements to verify before delivery or installation are:

• Overall width (cabinet and with doors)
• Overall height (to top of case and to top hinge cover)
• Overall depth (without handles, with handles, and with doors)
• Door-open clearance (depth with doors open)
• Required side, top, and rear clearances for airflow

Quick measurement checklist (what to measure at home)

Use a tape measure and write down these numbers before ordering parts, planning a move, or adjusting cabinetry:

• Opening width between cabinets
• Opening height to any overhead trim
• Depth to the wall (include baseboards)
• Pathway width (doors, hallways, turns)
• Space in front for doors and freezer drawer to fully open

Size summary table (what “36-inch class” means)

Spec	What it means	Why you care
Width class	36-inch class	Fits most standard 36-inch refrigerator cutouts
Configuration	French door, bottom-mount	Needs front clearance for both doors and the freezer drawer
Exact dimensions	Listed in the manual	Prevents fit issues with cabinets, walls, and door swing

Why it matters

Even small differences in depth and door swing can cause rubbing against cabinets or prevent drawers from opening fully. Confirming the exact LFX25991ST dimensions also helps you plan water line routing for the ice maker and dispenser.

If you are also planning filter space and service access, you can match the correct replacement filter for this model, such as the LG kenmore refrigerator water filter ADQ36006101, and order parts directly from the parts list for your model or search by model number on Sears PartsDirect.

Last updated: February 2026

On the LG LFX25991ST bottom-mount refrigerator, the most common “problem” customers notice is a cooling or airflow issue: the fresh food section warms up, temperatures swing, or frost builds up while the freezer seems to run differently. We start by checking airflow, door sealing, and the defrost system using the LFX25991ST owner's manual.

Most common symptoms and what they usually point to

• Fresh food warm, freezer cold: restricted airflow at the evaporator cover, iced-up evaporator, or a defrost control/sensor issue
• Frost or ice buildup on the back wall: defrost system problem (sensor, heater circuit, or airflow blockage)
• Water under the refrigerator or inside drawers: defrost drain restriction or water line leak
• Ice maker slow or no ice: water supply pressure issue, filter restriction, or inlet valve problem
• Door not sealing well: gasket not seating, door alignment, or flipper/mullion issue

Quick checks we recommend first (no tools)

1. Confirm settings: refrigerator about 37°F and freezer about 0°F.
2. Make sure vents are not blocked by food packages.
3. Check door closing and gasket contact all the way around.
4. Listen for the evaporator fan; a failed fan often causes uneven cooling.
5. If you recently changed the filter or had the water off, purge air from the dispenser.

Parts that commonly solve the underlying cause on this model

If your symptoms match, these model-specific parts are common fixes:

Symptom	Likely system	Example part for LFX25991ST
Warm fresh food, frost buildup	Defrost sensing	Refrigerator defrost sensor assembly 6615JB2005R
No water or slow water, poor ice	Filtration	LG kenmore refrigerator water filter ADQ36006101
No water to dispenser/ice maker	Water supply control	LG refrigerator water inlet valve AJU72992603
Interior light or door alarm issues	Door sensing	Refrigerator door switch 6600JB1010A

Why it matters

Uneven cooling is not just inconvenient; it can spoil food and force the compressor to run longer than necessary. Catching airflow restrictions, gasket leaks, or defrost problems early helps protect the sealed system (compressor, condenser, evaporator) and keeps temperatures stable.

Last updated: February 2026

Most LG refrigerators have a typical life expectancy of 10 to 15 years with normal home use and basic maintenance. For your LG LFX25991ST, keeping airflow clear and staying on top of cooling and water system upkeep helps you reach the high end of that range; see the owner's manual for care and operating guidance.

Typical lifespan and what to expect

In real-world use, refrigerator longevity is driven by how hard the sealed system works (compressor, condenser, evaporator) and how well the doors seal.

• Typical service life: 10 to 15 years
• Common “life-shorteners”: dirty condenser coil, warm room temps, frequent door openings, poor door sealing
• Common “life-extenders”: stable temperatures, good airflow around the cabinet, clean coils, prompt repair of cooling issues

Maintenance that most improves lifespan

These steps reduce compressor run time and help prevent temperature swings, frost issues, and water leaks.

• Clean dust from the condenser area regularly (more often with pets)
• Keep door gaskets clean and sealing evenly; replace torn or warped seals
• Avoid overpacking; blocked vents reduce airflow and strain the cooling system
• Replace the water filter on schedule to protect the dispenser and ice maker
• Fix puddles or leaks quickly so water does not reach wiring, fans, or insulation

Helpful parts for this model

If you are maintaining or repairing an LFX25991ST, these model-matched parts are commonly involved in long-life performance:

System	What it affects	Example part on this page
Water filtration	Taste, flow, ice maker reliability	LG kenmore refrigerator water filter ADQ36006101
Door sealing	Temperature stability, frost, run time	Refrigerator door gasket, left ADX72930460
Cooling efficiency	Compressor workload, heat removal	Refrigerator condenser coil ACG73645004

Why it matters

A refrigerator that runs longer than it should (because of restricted airflow, weak door sealing, or a clogged filter) puts extra wear on the sealed system. Reducing run time is the most direct way to extend overall refrigerator life.

Ordering replacement parts

We list replacement parts for LG LFX25991ST on this page, and you can also search by model number on Sears PartsDirect if you need additional items not shown in the featured list.

Last updated: February 2026

Yes, LG refrigerator repairs can be expensive, especially for sealed-system problems (cooling failures) that involve major components like the compressor, condenser coil, or evaporator. For the LG LFX25991ST, parts alone for those repairs can run from a couple hundred dollars to well over $600.

What typically makes a repair “expensive”

Major cooling-system and electronic repairs usually drive the highest total cost because they involve higher-priced parts and more labor time.

Common higher-cost repair categories include:

• Sealed system cooling issues (compressor, evaporator, condenser coil)
• Ice maker and dispenser drive problems (motors, switches)
• Control and display problems (PCB, user interface)
• Door sealing and alignment issues that cause temperature swings

Example part costs for LG LFX25991ST (parts only)

These examples are from parts available for this model; labor and any sealed-system service work are additional.

Repair area	Example part	What it affects
Cooling (sealed system)	Refrigerator compressor TCA38091801	No cooling, warm fridge/freezer
Heat removal	Refrigerator condenser coil ACG73645004	Poor cooling, long run times
Cooling (sealed system)	Refrigerator evaporator ADL73341411	Frost buildup, weak cooling
Controls	Refrigerator pcb assembly CSP30021078	Erratic temps, no response

How we recommend deciding whether to repair

Use this quick checklist before buying parts:

• Confirm the symptom (no cooling, ice maker not working, water not dispensing, door not sealing)
• Check warranty coverage details in your owner's manual (sealed system and linear compressor coverage can differ)
• Start with the most likely, lower-cost causes first (filters, switches, gaskets)
• Price the part plus expected labor time before committing
• If the issue is sealed-system related, plan for a higher total repair cost

Why it matters

A refrigerator can look like it needs a “big” repair when the real cause is something smaller (like a restricted water filter or a leaking door gasket). Doing a quick, symptom-based check first helps avoid replacing high-cost parts unnecessarily.

Ordering the right part

We list model-matched replacement parts for LG LFX25991ST on this page; you can also search by model number on Sears PartsDirect if you are comparing options.

Last updated: February 2026