LG LW5025R 5,000 BTU Window AC Review: Remote, LCD, 50 dB
A compact 5,000 BTU window air conditioner for rooms up to 150 sq. ft. with a full-featured remote, LCD control panel, 2 cooling modes, 2 fan speeds, an Energy Save function and a listed 50 dB.
By Daniel Brooks
Updated October 8, 2026
The LG LW5025R 5,000 BTU Window Air Conditioner is a compact, remote-controlled unit for small rooms up to 150 square feet. It has an LCD control panel, a full-featured remote, 2 cooling modes, 2 fan speeds and an Energy Save function. LG describes it as the smaller sibling of the LW6024R. Among compact conventional window air conditioners, it holds 3.7 stars from 387 ratings.
The listed noise level is 50 dB. The main limit is the basic feature set, with no timer listed. We evaluated it based on the manufacturer’s specifications.
Our Verdict
This LG is a sensible pick for a small bedroom, home office or other compact space. Its strongest points are the remote, which lets you adjust temperature and fan speed without leaving your bed or desk, the LCD panel, the Energy Save function, a slide-out washable filter, a fixed chassis with the EZ Mount kit and a compact 34 pound cabinet.
The trade-offs are typical of a small unit: 2 cooling modes and 2 fan speeds only, no inverter, no Wi-Fi and no timer in the feature list. If you want quiet, remote-controlled cooling for a room up to 150 square feet, it is worth considering.
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Key Specifications
| Feature | Specification |
|---|---|
| Brand | LG |
| Model | LW5025R |
| Type | Window air conditioner |
| Cooling Capacity | 5,000 BTU |
| Room Size (listed) | Up to 150 sq. ft. |
| Efficiency | 12.1 listed, plus a SEER figure of 14 |
| Noise Level | 50 dB |
| Voltage / Power | 115V, 450W |
| Window Fit | 21″ to 35″ wide, 12″ high |
| Dimensions | 12.83″D x 17.33″W x 11.14″H |
| Weight | 34 pounds |
| Speeds | 2 cooling modes, 2 fan speeds |
| Controls | LCD panel, full-featured remote, Energy Save |
| Filter | Slide-out, washable |
| Compressor | No inverter |
| Refrigerant | R-32 |
| Warranty | 1 year limited |
Cooling Capacity and Room Size
LG rates the LW5025R at 5,000 BTU for one room or space up to 150 square feet. That fits a small bedroom, a home office or a nook that needs its own cooling.
The 2 cooling modes and 2 fan speeds keep things simple. Use the higher setting to cool the room quickly, then switch to the lower one to hold the temperature more quietly.
For a small room used mostly in the evening, such as a bedroom, the 5,000 BTU size avoids the short cycling that an oversized unit can cause. Short cycling leaves a room cool but clammy, because the unit does not run long enough to remove moisture.
ENERGY STAR publishes this general guide for sizing a room air conditioner by floor area:
| Room Size (sq ft) | Cooling Capacity (BTU/hr) |
|---|---|
| 100 to 150 | 5,000 |
| 150 to 250 | 6,000 |
| 250 to 300 | 7,000 |
| 300 to 350 | 8,000 |
| 350 to 400 | 9,000 |
| 400 to 450 | 10,000 |
| 450 to 550 | 12,000 |
| 550 to 700 | 14,000 |
| 700 to 1,000 | 18,000 |
Adjust for your room: reduce capacity by 10 percent for a heavily shaded room, increase it by 10 percent for a very sunny room, add 600 BTU for each regular occupant beyond two, and add 4,000 BTU if the unit cools a kitchen. Source: ENERGY STAR.
At its listed 5,000 BTU, it lines up with rooms of about 100 to 150 square feet, which matches LG’s coverage claim. A sunny room or one with several electronics may need a larger unit.
It also works well in rooms used only part of the time, such as a guest room or a home office used a few days a week. The small size makes it easy to remove and store when it is not needed.
Installation and Fit
The fixed chassis installs in a double-hung window 21 to 35 inches wide and 12 inches high using the included EZ Mount kit. The 12 inch height requirement suits many smaller windows.
The cabinet measures 12.83 inches deep, 17.33 inches wide and 11.14 inches tall, and weighs 34 pounds. Most people can lift it on their own, though a helper makes it easier to hold steady while you secure it.
Check that the sill is solid and that the sash can close down firmly on top of the unit. Seal any gaps around the side panels so warm air does not leak in around the cabinet.
It runs on a standard 115V outlet with a listed draw of 450 watts.
Noise, Energy Use and Efficiency
The listed noise level is 50 dB, quiet for a window unit and suitable for a bedroom. LG describes it as ultra-quiet in the listing title.
The efficiency figures in the listing do not agree. One field gives 12.1, and another gives a SEER figure of 14. Check the yellow EnergyGuide label or the manual for the official rating. The Energy Save function helps cut running costs, and the unit uses R32 refrigerant. There is no inverter compressor.
With a 450 watt draw, it is economical to run in a small room. Cleaning the filter on schedule also keeps efficiency up, since a clogged filter makes the unit work harder.
Controls and Smart Features
The LCD display and simple control panel offer up and down temperature adjustment and fan speed selection. The full-featured remote repeats those controls, so you can make changes without leaving your bed, workspace or couch.
There is no Wi-Fi or app control, and the feature list does not mention a timer or auto restart. If either matters to you, the larger LW6024R is the step up LG points to.
For a bedroom, a simple routine works well: cool the room before bed on the higher setting, then switch to the lower setting with Energy Save on for the night.
Maintenance and Drainage
The slide-out washable filter captures dust and makes cleaning simple. LG recommends cleaning it every 30 days to keep the unit running its best. Slide it out, rinse it, let it dry fully and slide it back in.
The listing does not describe condensate drainage. Check the manual for how water is handled and for storage steps at the end of the season.
Pros and Cons
| Pros | Cons |
|---|---|
| Full-featured remote and LCD panel | No timer in the feature list |
| Listed 50 dB | Only 2 cooling modes and 2 fan speeds |
| Energy Save function | Efficiency figures in the listing conflict |
| Fits windows 12″ high | No inverter compressor |
| Slide-out washable filter | No Wi-Fi or app control |
Who Should Buy It
| Who Should Buy It? | Who Should Look Elsewhere? |
|---|---|
| Small rooms up to 150 sq. ft. | Rooms larger than 150 sq. ft. |
| Buyers who want a remote | Buyers who want a timer |
| Light sleepers in small bedrooms | Smart home users wanting app control |
| Smaller windows from 12″ high | Buyers set on an inverter compressor |
| One-person installers | Casement or sliding window owners |
Final Verdict
The LG LW5025R 5,000 BTU Window Air Conditioner combines a full-featured remote, an LCD panel, Energy Save, a slide-out washable filter and a listed 50 dB in a compact 34 pound unit for rooms up to 150 square feet. The compromises are a basic set of speeds, no timer listed and conflicting efficiency figures. You can check the current price and details for the LG LW5025R 5,000 BTU Window Air Conditioner, or compare other compact window air conditioners.
Frequently Asked Questions
What size room is the LG LW5025R for?
LG rates it for rooms up to 150 square feet. On the ENERGY STAR chart, 5,000 BTU fits rooms of about 100 to 150 square feet.
Does it come with a remote?
Yes. A full-featured remote is included alongside the LCD control panel.
How often should I clean the filter?
LG recommends cleaning the slide-out filter every 30 days.
What window size does it fit?
It fits double-hung windows 21 to 35 inches wide and 12 inches high.
About the author
Daniel Brooks is a home cooling editor at WikiCooling, covering window, portable, through-the-wall and mini-split air conditioners, fans, and dehumidifiers. He researches cooling capacity, energy efficiency, noise levels, installation requirements, and buyer feedback to help homeowners choose the right unit for their room size, climate, and budget.