LG LW5024 5,000 BTU Window AC Review: Auto Cool, 50 dB
A 5,000 BTU window air conditioner for small rooms up to 150 sq. ft. with Auto Cool, 2 cooling and fan speeds, 2-way air deflection, a slide-out washable filter, a listed CEER of 11.0 and 50 dB in low mode.
By Daniel Brooks
Updated October 8, 2026
The LG LW5024 5,000 BTU Window Air Conditioner is a compact unit for small rooms up to 150 square feet. LG uses a 10 by 15 foot room as its example. It offers 2 cooling and fan speeds with Auto Cool, 2-way air deflection and a slide-out washable filter. Among small conventional window air conditioners, it holds 3.7 stars from 70 ratings.
LG lists sound levels as low as 50 dB in low mode and a CEER of 11.0. The main limits are the basic controls and no timer or auto restart in the feature list. We evaluated it based on the manufacturer’s specifications.
Our Verdict
This LG is a sensible pick for a small bedroom, home office or dorm. Its strongest points are the listed 50 dB in low mode, Auto Cool, 2-way air deflection, a permanent slide-out washable filter, an easy window installation kit that makes seasonal removal simple and a compact 34 pound cabinet.
The trade-offs are typical of a basic unit: 2 cooling and fan speeds only, no inverter, no Wi-Fi, and no timer or auto restart in the feature list. If you want quiet, simple cooling for a room up to 150 square feet, it is worth considering.
LG 5,000 BTU Window Air Conditioner
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Key Specifications
| Feature | Specification |
|---|---|
| Brand | LG |
| Model | LW5024 |
| Type | Window air conditioner |
| Cooling Capacity | 5,000 BTU |
| Room Size (listed) | Up to 150 sq. ft. |
| Efficiency | CEER 11.0 (listed) |
| Noise Level | As low as 50 dB (low mode) |
| Voltage / Power | 115V, 450W |
| Window Fit | 24″ to 35″ wide, 12″ minimum height |
| Dimensions | 12.83″D x 17.33″W x 11.14″H |
| Weight | 34 pounds |
| Speeds | 2 cooling and fan speeds, Auto Cool |
| Airflow | 2-way air deflection |
| Filter | Slide-out, permanent, washable |
| Compressor | No inverter |
| Refrigerant | R-32 |
| Warranty | 1 year limited |
Cooling Capacity and Room Size
LG rates the LW5024 at 5,000 BTU for small rooms up to 150 square feet. That fits a small bedroom, a home office, a dorm room or a nursery.
Auto Cool adjusts operation to hold the temperature you set, and the 2-way air deflection lets you direct airflow where it is needed most. LG says it handles cooling, dehumidifying or just circulating air.
Matching the size to the room matters. In a small room, a 5,000 BTU unit runs long enough to pull moisture out of the air, which keeps the room comfortable rather than cold and clammy.
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 that holds several people may need more capacity.
It also works well in rooms used only part of the time, such as a guest room. The light cabinet and simple kit make it easy to install for the summer and take out for winter.
Installation and Fit
The spec sheet lists a window opening of 24 to 35 inches wide with a minimum height of 12 inches. The included installation kit and window curtain panels make setup straightforward, and LG notes that the unit is just as easy to remove once the season is over.
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 alone, 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 curtain panels so warm air does not leak in.
It runs on a standard 115V outlet with a listed draw of 450 watts.
Noise, Energy Use and Efficiency
LG lists sound levels as low as 50 dB in low mode, which it says eliminates unnecessary noise. That makes it a good fit for a bedroom on the low setting.
The listed CEER is 11.0. With a 450 watt draw, it is an economical unit to run in a small room. There is no inverter, so the compressor cycles on and off to hold the set temperature.
A clean filter and well-sealed panels are the simplest ways to keep running costs down. Both reduce how long the compressor needs to run to hold the room at your set temperature.
Controls and Smart Features
The feature list describes 2 cooling and fan speeds with Auto Cool. The included components list a remote and batteries, so you can make changes from across the room.
There is no Wi-Fi or app control, and the feature list does not mention a timer or auto restart. If you need those, look at a step-up model with a timer.
For a small bedroom, a simple routine works well: cool the room on the higher speed before bed, then switch to low for quieter running overnight.
Maintenance and Drainage
The slide-out, permanent washable filter can be reused, which keeps the unit running well without buying replacements. Slide it out, rinse it, let it dry fully and slide it back in. Clean it regularly during the cooling season.
The listing does not describe condensate drainage. Check the manual for how water is handled. When you remove the unit at the end of the season, clean the filter and store the unit upright.
Pros and Cons
| Pros | Cons |
|---|---|
| Listed 50 dB in low mode | No timer or auto restart listed |
| Auto Cool and 2-way air deflection | Only 2 cooling and fan speeds |
| Listed CEER of 11.0 | No inverter compressor |
| Fits windows 12″ high | No Wi-Fi or app control |
| Permanent washable filter | Basic feature set |
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. |
| Light sleepers in small bedrooms | Buyers who want a timer |
| Seasonal installers | Smart home users wanting app control |
| Smaller windows from 12″ high | Buyers set on an inverter compressor |
| Buyers who want simple controls | Casement or sliding window owners |
Final Verdict
The LG LW5024 5,000 BTU Window Air Conditioner combines a listed 50 dB in low mode, Auto Cool, 2-way air deflection, a permanent washable filter and a listed CEER of 11.0 in a compact 34 pound unit for rooms up to 150 square feet. The compromises are basic speeds and no timer or auto restart listed. You can check the current price and details for the LG LW5024 5,000 BTU Window Air Conditioner, or compare other 5,000 BTU window air conditioners.
Frequently Asked Questions
What size room is the LG LW5024 for?
LG rates it for small rooms up to 150 square feet. On the ENERGY STAR chart, 5,000 BTU fits rooms of about 100 to 150 square feet.
How quiet is it?
LG lists sound levels as low as 50 dB in low mode.
Is the filter washable?
Yes. It has a slide-out, permanent washable filter that can be reused.
What window size does it fit?
The spec sheet lists a window opening of 24 to 35 inches wide with a minimum height of 12 inches.
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.