What is a refrigerator bottom mount?
A bottom-mount refrigerator (like the LG LFX28978ST) has the freezer compartment on the bottom and the fresh-food section on top, so the items you use most often sit at eye level. This layout reduces bending for everyday groceries and keeps frozen foods in a lower drawer.
How a bottom-mount layout is organized
Most bottom-mount (bottom freezer) refrigerators are set up like this:
- Top section: fresh food (produce, dairy, drinks, leftovers)
- Bottom section: freezer in a pull-out drawer or lower door
- Middle area (common on French-door models): doors and mullion/flipper area that helps seal the two doors
- Door storage: bins for condiments and beverages
- Dispenser features (if equipped): water and ice routed through internal tubing and valves
For model-specific features and controls, use the LFX28978ST owner's manual.
Bottom mount vs. top mount: quick comparison
| Feature | Bottom mount (bottom freezer) | Top mount (top freezer) |
|---|---|---|
| Fresh food access | Easier (eye level) | Lower (more bending) |
| Freezer access | Lower drawer | Upper door |
| Best for | Frequent fresh-food use | Frequent freezer use |
Why it matters when troubleshooting or buying parts
The bottom-mount design affects where you’ll see common issues and what parts are involved:
- Door sealing and alignment impacts fresh-food temps and condensation; the right-side seal is the refrigerator door gasket, right ADX73550624.
- Ice and water routing often runs through the cabinet and doors; leaks can involve tubing such as refrigerator water tubing MJU62070602.
- Freezer drawer use can increase frost or moisture if the drawer is left ajar.
Common symptoms tied to bottom-mount designs
- Warm fresh-food section but freezer seems OK
- Condensation along the French doors or center seam
- Ice maker or dispenser issues after a door has been left open
- Water puddles near the front (often related to defrost drain or door sealing)
Last updated: February 2026
What size is LFX28978ST?
The LG LFX28978ST is a 36-inch class French door, bottom-mount refrigerator with about 27.6 cu. ft. of total capacity. For the exact exterior height, width, and depth (including handles and door swing clearance), we recommend confirming the specifications in the LFX28978ST owner's manual.
Quick size overview
Here are the key “size” specs most shoppers mean:
- Width class: 36-inch
- Total capacity class: about 27.6 cu. ft.
- Configuration: French door refrigerator with bottom freezer drawer
- Fit planning: allow extra space for door swing, leveling, and airflow
Typical dimensions to plan for (fit and clearance)
Even within the 36-inch class, exact measurements vary by trim and handle depth. For most LG 36-inch French door models, plan around these common ranges:
- Width: ~35 3/4 in. to 36 in.
- Height: ~68 in. to 70 in.
- Depth: ~34 in. to 36 in. (often deeper with handles)
Common clearance checklist
- Leave space behind the unit for water line routing and airflow.
- Leave room above for hinge clearance and easier installation.
- Confirm the door swing so doors can open fully without hitting walls or cabinets.
- Measure the pathway (doorways, turns, stairs) before delivery.
Measurement guide (what to measure)
| Measurement | What it includes | Why it matters |
|---|---|---|
| Width | Cabinet-to-cabinet opening | Prevents binding and vibration |
| Height | Floor to cabinet top | Avoids cabinet trim interference |
| Depth | Case depth vs. depth with handles | Ensures it will not stick out too far |
| Door swing clearance | Space in front and to the sides | Allows drawers and doors to open fully |
Why it matters
A refrigerator that is “36-inch” can still fail to fit if the depth with handles or door swing clearance is overlooked. Confirming the exact LFX28978ST dimensions helps avoid delivery issues and ensures proper airflow for efficient cooling.
Last updated: February 2026
What is the most common problem with the LG refrigerator?
The most common issue we see with the LG LFX28978ST refrigerator is a cooling problem: the fresh food section or freezer runs warm, temperatures swing, or the unit stops cooling altogether. Ice maker and water dispensing problems are also frequent, especially when water flow is restricted or components wear.
Most common symptoms to watch for
- Refrigerator section warm but freezer still cold (or the reverse)
- Food spoiling faster than normal, soft ice cream, or melting ice
- Clicking, buzzing, or unusually loud running sounds
- Ice maker not making ice or making small/hollow cubes
- Water dispenser slow, sputtering, or not dispensing
Quick checks before replacing parts
Use these steps to narrow the cause on an LG bottom-mount refrigerator like the LFX28978ST:
- Confirm temperature settings and allow 24 hours after changes
- Make sure vents are not blocked by food packages
- Check door closure and inspect gaskets for gaps or tears
- Clean dust from the condenser area to improve heat release
- If water and ice are weak, replace the filter or install a bypass to test flow
Common causes and the parts that often fix them
| Problem area | What you notice | Parts that commonly apply on this model |
|---|---|---|
| Door not sensing closed | Light stays on, warm temps, poor ice production | Refrigerator door switch 6600JB1010A |
| Air leaks at doors | Frost, sweating, warm spots near door | Right gasket ADX73550624; left gasket ADX73550621; freezer gasket MDS64172919 |
| Water supply to dispenser/ice maker | Slow water, no ice, small cubes | Water tubing MJU62070602; inlet valve AJU72992601; filter head ADQ36011715; bypass ABN73019101 |
| Ice maker system | No ice or irregular ice production | Ice maker assembly AEQ73110205; ice container AKC72949319 |
Why it matters
Cooling and airflow problems can quickly lead to food spoilage and extra compressor run time. Water flow issues can look like an ice maker failure, but they are often caused by a restricted filter path or a weak inlet valve.
Model-specific help
For control settings, airflow locations, and diagnostic steps specific to the LG LFX28978ST, follow the troubleshooting section in the LFX28978ST owner's manual. For water and filter-related issues, we also recommend how to replace the water filter in an LG refrigerator.
Last updated: February 2026
What is the price of LG refrigerator legs?
Pricing for LG refrigerator legs (leveling feet) varies by the exact leg style used on LG model LFX28978ST and whether you need the front leveling foot or a rear roller style. Use the diagram and parts list in the LFX28978ST manual to identify the correct leg before you compare prices.
What to expect for price
Most replacement leveling legs for LG bottom-mount refrigerators fall into these typical ranges:
| Replacement item | Typical price range (USD) | What you’re usually buying |
|---|---|---|
| Front leveling foot (single) | $10 to $40 | One adjustable foot/leg |
| Rear roller or leg assembly | $30 to $120 | Roller plus height adjuster parts |
| Clip, retainer, or hardware | $5 to $20 | Small pieces that hold the leg in place |
How to make sure you’re pricing the right part
“Refrigerator legs” can refer to different components. We recommend confirming these details first:
- Location: front vs rear
- Side: left vs right (some designs differ)
- Style: threaded leveling foot vs roller/leg assembly
- What’s included: leg only vs leg plus bracket/hardware
- Symptoms: stripped threads, broken foot pad, or a cabinet that rocks
Quick checks before ordering
Sometimes the leg is fine and the refrigerator just needs adjustment.
- Turn the front legs down until the cabinet is stable and doors self-close
- Check for a floor dip that makes the refrigerator rock
- Inspect for cross-threading or a leg that spins without raising
- Verify nothing is trapped under the base (mat, trim, debris)
Why it matters
Correct leveling helps the doors seal evenly, reduces vibration noise, and prevents the cabinet from shifting, which can affect ice maker and dispenser alignment.
Last updated: February 2026





