LG LW1022FVSM 10,000 BTU Dual Inverter Window AC Review: 44 dB
An ENERGY STAR 10,000 BTU dual inverter window air conditioner for rooms up to 450 sq. ft. with a listed 44 dB in low mode, LG ThinQ app, Alexa and Google Assistant control and a complete EZ Mount kit.
By Daniel Brooks
Updated October 8, 2026
The LG LW1022FVSM 10,000 BTU Dual Inverter Window Air Conditioner pairs LG’s DUAL Inverter compressor and BLDC motor with Wi-Fi control for rooms up to 450 square feet. LG describes it as ENERGY STAR certified, and lists sound levels as low as 44 dB. Among mid-size conventional window air conditioners, it is one of the most refined smart options, with 4.1 stars from 210 ratings.
It suits a living room, large bedroom or home office. The main consideration is its unusually deep 26.97 inch cabinet. We evaluated it based on the manufacturer’s specifications.
Our Verdict
This LG is a premium pick for quiet, efficient cooling. Its strongest points are the DUAL Inverter compressor, a listed 44 dB in low and sleep mode, ENERGY STAR certification, LG’s claim of up to 35% more energy savings than the ENERGY STAR requirement, LG ThinQ app control with Alexa and Google Assistant, an LED display, a remote and a complete EZ Mount installation kit with a support bracket.
The trade-offs are size and weight. At 62.8 pounds and 26.97 inches deep, it projects further into the room or out over the sill than most 10,000 BTU units. If you want quiet, connected inverter cooling for a room up to 450 square feet, it is a strong contender.
LG 10,000 BTU Dual Inverter Window Air Conditioner
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Key Specifications
| Feature | Specification |
|---|---|
| Brand | LG |
| Model | LW1022FVSM |
| Type | Dual inverter window air conditioner |
| Cooling Capacity | 10,000 BTU |
| Room Size (listed) | Up to 450 sq. ft. |
| ENERGY STAR | Certified |
| Efficiency | 15 (listed as SEER) |
| Noise Level | As low as 44 dB (low and sleep mode) |
| Voltage / Power | 115V, 60 Hz, 970W |
| Window Fit | Double-hung, 22″ to 36″ wide, 13″ high |
| Dimensions | 26.97″D x 19.57″W x 12.36″H |
| Weight | 62.8 pounds |
| Smart Controls | LG ThinQ app, Alexa, Google Assistant, remote |
| Display | LED display |
| Filter | Slide-out washable filter |
| Compressor | DUAL Inverter with BLDC motor |
| Refrigerant | R-32 |
| Warranty | 1 year parts and labor |
Cooling Capacity and Room Size
LG rates the LW1022FVSM at 10,000 BTU for medium to large rooms up to 450 square feet. That covers most apartment living rooms, a large primary bedroom or an open home office.
The DUAL Inverter compressor adjusts its speed to hold the set temperature rather than cycling fully on and off. That gives steadier comfort, quieter running once the room is cool, and better humidity control, especially overnight.
If your room is well under 400 square feet, a smaller unit may suit it better. Even with an inverter, a unit sized well beyond the room spends much of its time at minimum output.
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 10,000 BTU, it lines up with rooms of about 400 to 450 square feet, which matches LG’s coverage claim.
Installation and Fit
The fixed chassis installs in a double-hung window from 22 to 36 inches wide and 13 inches high, using the included EZ Mount kit. The kit is unusually complete: 2 foam-PE pieces, a foam strip, a curtain panel, 3 L brackets, 2 heatproof foam pieces, a support bracket and screws.
The cabinet measures 26.97 inches deep, 19.57 inches wide and 12.36 inches tall, and weighs 62.8 pounds. The depth is the key consideration, so check how far it will project into the room and outside. Plan on two people, use the support bracket as the manual directs and plug it into a standard 115V outlet.
Noise, Energy Use and Efficiency
LG lists sound levels as low as 44 dB in sleep and low mode, crediting its BLDC motor and DUAL Inverter compressor. That is very quiet for a 10,000 BTU window unit and well suited to bedrooms.
LG describes the unit as ENERGY STAR certified and claims up to 35% more energy savings than the ENERGY STAR certification requirement; treat that as a manufacturer claim. The listing gives an efficiency figure of 15, labeled as SEER, and a power draw of 970 watts.
Controls and Smart Features
LG ThinQ lets you control the unit from your phone, and it is compatible with Google Assistant and Amazon Alexa for voice commands. An LED display, a simple control panel and the remote cover everyday use.
App control is especially useful with an inverter unit: start it early so it can bring the room down gradually and quietly, rather than switching on at full power when you arrive.
Voice control is handy at night when the remote is out of reach, and other people in the household can control the unit from their own phones. Combined with the low listed noise level, that makes this a strong bedroom unit.
Maintenance and Drainage
The slide-out filter makes cleaning simple, and LG recommends cleaning it every 30 days to keep the unit running its best.
The listing does not describe condensate drainage. Check the manual for how water is handled and for seasonal removal steps.
Pros and Cons
| Pros | Cons |
|---|---|
| DUAL Inverter compressor | Very deep 26.97″ cabinet |
| Listed 44 dB in low and sleep mode | Heavy at 62.8 pounds |
| ENERGY STAR certified | No heat mode |
| LG ThinQ, Alexa and Google Assistant | Not for windows under 13″ high |
| Complete EZ Mount kit with support bracket |
Who Should Buy It
| Who Should Buy It? | Who Should Look Elsewhere? |
|---|---|
| Bedrooms and living rooms up to 450 sq. ft. | Small bedrooms that need less capacity |
| Light sleepers who want a quiet unit | Spaces where a deep cabinet will not fit |
| Buyers who want inverter efficiency | Anyone installing alone |
| Smart home users with Alexa or Google | Buyers who need heating |
| Homes with a standard 115V outlet | Casement or sliding window owners |
Final Verdict
The LG LW1022FVSM 10,000 BTU Dual Inverter Window Air Conditioner combines a DUAL Inverter compressor, a listed 44 dB, ENERGY STAR certification and ThinQ smart control for rooms up to 450 square feet. The compromises are a very deep cabinet and a 62.8 pound weight. If quiet, efficient cooling is your priority, you can check the current price and details for the LG LW1022FVSM 10,000 BTU Dual Inverter Window Air Conditioner, or compare other inverter window air conditioners.
Frequently Asked Questions
Is the LG LW1022FVSM an inverter model?
Yes. It uses LG’s DUAL Inverter compressor and a BLDC motor.
How quiet is it?
LG lists sound levels as low as 44 dB in low and sleep mode.
Can I control it with Alexa?
Yes. LG ThinQ supports phone control, and the unit works with Amazon Alexa and Google Assistant.
What window size does it fit?
It fits double-hung windows from 22 to 36 inches wide and 13 inches high, using the included EZ Mount kit.
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.