LG LW5016 5,000 BTU Window AC Review: Simple, Proven, Quiet
A compact mechanical-control window air conditioner for rooms up to 150 square feet, with two cooling and fan speeds, 2-way air deflection, auto restart and a slide-out washable filter.
By Daniel Brooks
Updated October 15, 2026
The LG LW5016 5,000 BTU Window AC is a small, mechanical-control window unit built for bedrooms, offices and other rooms up to 150 square feet. It is one of the most widely owned conventional window air conditioners in the 5,000 BTU class, with a 4.4 out of 5 average across more than 1,544 ratings on its listing.
The LW5016 keeps things simple: two rotary knobs, two cooling and fan speeds, 2-way air deflection and a slide-out washable filter. Auto restart turns the unit back on after a power outage, which is a useful extra on a basic model.
Our Verdict
The LW5016 is a reliable choice for a small bedroom, dorm room or home office where you want dependable cooling without a remote, an app or a digital display. It is easy to install, easy to use and has a long track record behind it.
The trade-offs are the ones you accept with a basic unit. There is no remote, no timer and no thermostat readout in degrees, and only two fan speeds. If you want a set-and-forget window unit for a small room, it does the job well.
LG LW5016 5,000 BTU Window Air Conditioner
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Key Specifications
| Feature | Specification |
|---|---|
| Brand | LG |
| Model | LW5016 |
| Type | Window air conditioner, mechanical controls |
| Cooling Capacity | 5,000 BTU |
| Room Size | Up to 150 sq ft (manufacturer) |
| Noise Level | As low as 50 dB on low |
| Power | 115 volts, 440 watts |
| Efficiency (listed) | 11.2 |
| Fan Speeds | 2 cooling and fan speeds |
| Air Direction | 2-way air deflection |
| Dimensions | 14.38″D x 17.31″W x 11.13″H |
| Weight | 40 pounds |
| Refrigerant | R-410A |
| Warranty | 1 year parts and labor |
Cooling Capacity and Room Size
LG rates the LW5016 at 5,000 BTU and for rooms up to 150 square feet, such as a 10 by 15 foot bedroom. That lines up with the smallest row of the ENERGY STAR sizing chart.
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.
For a typical small bedroom, office or dorm room, 5,000 BTU is plenty. If the room gets heavy afternoon sun, or if two or more people regularly use it, you may want to step up to a 6,000 BTU unit. The compressor is a standard rotary type with no inverter, so it cycles on and off to hold the temperature you set on the dial.
Installation and Fit
LG includes a window installation kit with the unit. The LW5016 is designed for standard double-hung windows: you lower the sash onto the top rail, extend the side panels to fill the gaps and secure the unit with the supplied hardware.
At 17.31 inches wide, 11.13 inches tall and 14.38 inches deep, the unit is compact, and it fits into most standard bedroom windows. It weighs 40 pounds, so one person can usually handle installation, though a helper makes it easier to hold the unit steady while you lower the window.
Tilt the unit very slightly toward the outside so condensation drains outdoors. Seal any gaps around the side panels with foam weatherstrip to keep warm air and insects out.
Noise, Energy Use and Efficiency
LG says the unit runs as low as 50 dB on the low setting. That is quiet for a basic window unit and helps in a bedroom. The higher fan speed is louder but cools a hot room faster.
Power draw is listed at 440 watts on a standard 115 volt outlet, which is light enough to share a circuit with other small loads. The listing shows an efficiency figure of 11.2, which is typical for a mechanical 5,000 BTU unit. It is not ENERGY STAR certified.
Controls and Features
Two rotary knobs handle everything. One sets the mode and fan speed, with two cooling speeds and two fan-only speeds. The other is a thermostat dial that runs from cooler to warmer rather than showing an exact temperature. Many people like this approach because it is simple for anyone to use and has nothing to program.
The 2-way air deflection lets you aim airflow left or right. Auto restart is a nice touch on a basic unit: after a power failure, it turns the air conditioner back on at the same setting, so a room stays cool even if the power blinks while you are out.
The listing also notes the unit can dehumidify and circulate air, which helps on humid days. There is no remote, timer or Wi-Fi.
Maintenance and Care
The slide-out washable filter traps dust and allergens. Pull it out every couple of weeks during heavy use, rinse it in warm water and let it dry before reinstalling. A clean filter keeps airflow strong and helps the unit run efficiently.
At the end of the season, remove the unit from the window if you can, or cover the exterior to protect it over winter. Check the side panels and foam seals each spring and replace any that have cracked.
How It Compares
LG sells several 5,000 BTU window units, including newer models with a remote. The LW5016 is the classic mechanical version. Choose it if you prefer physical knobs and the simplest possible operation. If you want a remote, a timer or a digital thermostat, look at one of the newer models instead.
Everyday Use
Living with the LW5016 is about as easy as it gets. Turn the mode knob to high cool on a hot afternoon, then drop it to low cool once the room is comfortable. The thermostat dial takes a day or two to learn, since it shows a range rather than degrees, but once you find the right spot you rarely need to touch it again.
Pros and Cons
| Pros | Cons |
|---|---|
| Proven model with 1,544+ ratings | No remote, timer or digital display |
| As low as 50 dB on low | Only two fan speeds |
| Auto restart after power loss | Thermostat dial has no exact temperatures |
| Light 440 watt power draw | Not ENERGY STAR certified |
| Compact and easy to install | Sized for small rooms only |
Who Should Buy It
| Who Should Buy It? | Who Should Look Elsewhere? |
|---|---|
| Small bedrooms, dorms and offices | Rooms over about 150 sq ft |
| Buyers who prefer simple knobs | Anyone who wants a remote or app |
| Older relatives who want easy controls | Buyers who want a programmable timer |
| Rentals and second homes | Buyers focused on top efficiency |
Final Verdict
The LG LW5016 5,000 BTU Window AC is a simple, proven window unit for small rooms. Its mechanical controls, quiet low setting, auto restart and washable filter make it easy to live with. Skip it if you want a remote, timer or smart features. You can check the current price and details for the LG LW5016 5,000 BTU Window Air Conditioner.
Frequently Asked Questions
What size room does the LG LW5016 cool?
LG rates it for rooms up to 150 square feet, such as a 10 by 15 foot bedroom.
Does the LG LW5016 have a remote?
No. It uses two mechanical knobs for mode, fan speed and thermostat.
Does it restart after a power outage?
Yes. Auto restart turns the unit back on at the same setting when power returns.
How loud is it?
LG says it runs as low as 50 dB on the low setting, which is quiet for a small window unit.
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.