This Wi-Fi-connected window air conditioner is a significant step up

At a Look

Knowledgeable’s Ranking


  • Inverter expertise makes this air conditioner quieter and extra power environment friendly than most
  • A lot simpler to put in than most window air conditioners of this dimension
  • Onboard Wi-Fi adapter, with assist for Alexa and Google Assistant


  • LG’s SmartThinQ app is a jack of all trades, grasp of none
  • LG’s app is appallingly unhealthy in terms of scheduling the air conditioner
  • Connects to 2.4GHz networks solely

Our Verdict

LG’s Twin Inverter Wi-Fi-connected window air conditioner is quiet and tremendous environment friendly, however LG must rethink its technique of utilizing the identical app for each one in every of its good home equipment.

There are thousands and thousands of old style window air conditioners on the market, however the expertise for these ugly, noisy bins hasn’t modified a lot. You can also make one smarter by connecting it to a third-party controller just like the Sensibo Sky, Ambi Local weather 2, or Tado Good A/C Distant, and that would possibly scale back its power consumption; but when yours is on its final legs, you’re higher off retiring it and shopping for one thing new that has a built-in mind. That’s what LG’s Twin Inverter line of related window air conditioners has, they usually’re supremely environment friendly besides.

LG’s Twin Inverter line ranges from a 9,500 BTU unit to a 22,000 BTU monster that depends on a 220-volt outlet (the kind an electrical garments dryer would use). I reviewed LG’s mannequin LW1517IVSM, which plugs right into a extra widespread 15-amp, 120-volt grounded outlet and is rated at 14,000 BTU. BTU, by the best way, is an acronym for British Thermal Unit. When used within the context of air-con, it measures the quantity of warmth that the air conditioner can take away from a room. So, the upper the BTU depend, the extra highly effective the air conditioner.

Producers also can state the sq. footage an A/C unit ought to be capable to cool. LG recommends this unit for rooms as much as 800 sq. ft. I examined it in a 600-square-foot attic area that’s been transformed to bed room. The transform didn’t convey ducting from our central HVAC system to this room, so the area will get extremely scorching in the summertime months. A window air conditioner is a should.

What’s an inverter?

Earlier than we focus on this air conditioner’s good options, let’s discuss concerning the underlying expertise that makes it extra environment friendly than most. An air conditioner’s compressor motor circulates the refrigerant that’s used for warmth trade. On the everyday air conditioner, the compressor motor runs at a set velocity regardless of the distinction between the ambient temperature and the goal temperature you set with the air conditioner’s controls. The compressor fires up and operates at full tilt till the goal temp is reached. It then shuts off and waits for the ambient temperature to as soon as once more rise above the goal, at which level it begins up once more. This cycle repeats time and again till air-con is not wanted.

lg smartthinq app 1 Jason D’Aprile

Controlling the LG Twin Inverter air conditioner’s fundamental operations with the SmartThinQ app is simple sufficient.

An inverter air conditioner like this one from LG avoids that roller-coaster temperature management as a result of it’s pushed by a variable-speed compressor motor. It would fireplace up the compressor at full velocity at first, however when the goal temperature is reached, it is going to gradual the compressor motor right down to preserve that temperature, as a substitute of shutting it off and ready for the room to get too heat. In essence, the air conditioner determines how onerous it must work to take care of the specified temperature, and it instructs its compressor motor to function accordingly.

In consequence, LG says its Twin Inverter air conditioners are as much as 25-percent extra environment friendly than is required to earn the U.S. authorities’s EnergyStar certification. The EnergyGuide label on the mannequin LW1517IVSM reviewed right here, for instance, estimates it is going to price a shopper $68 to function this unit for one yr, in comparison with a spread of $115 to $182 for comparable fashions which can be much less environment friendly.

This method delivers one other profit, too: For the reason that compressor motor in an inverter air conditioner isn’t consistently working at full capability, this sort of equipment doesn’t produce as a lot noise. This LG unit was actually quiet—it wasn’t whisper quiet, however it was much less noisy than another window air conditioner I’ve heard.

Straightforward set up

The LW1517IVSM the most important mannequin in LG’s Twin Inverter lineup that doesn’t require a 220-volt outlet. It’s an imposing field, weighing 100 kilos. however LG made the unit simple to put in by designing the primary unit in order that it slides out of its cupboard. You safe simply the cupboard to your window sill first, after which slide the unit into the mounted cupboard and lock it down with a few screws.

Plug it in, flip it on, and use both the management pad on the entrance of the unit or the distant management (which has an LCD show) to set the goal temperature and alter the fan settings. In my expertise, LG’s LW1517IVSM wanted simply 25 minutes to decrease the temperature within the room from a stifling 90 levels Fahrenheit to a really nice 68.

Good options

lg smartthinq app 2 Jason D’Aprile

The truth that SmartThinQ is to designed to function all of LG’s good home equipment—from fridges to hoover cleanrs—makes it very troublesome to perform extremely particular duties. Programming the air conditioner to succeed in goal temperatures in accordance with a schedule is a working example.

However no self-respecting good dwelling dweller needs to fiddle with buttons on a management panel once they can concern voice instructions to a sensible speaker or use a smartphone app. That’s the place this air conditioner’s onboard Wi-Fi adapter (alas, it is going to join solely to 2.4GHz networks) and LG’s SmartThinQ app come into play. The unit is appropriate with each Amazon Alexa and Google Assistant, too.

The SmartThinQ app does a fantastic job of controlling and adjusting the air conditioner from afar, however you’ll encounter important flaws when you drill down into its scheduling choices. The app permits you to schedule days and instances when the air conditioner will activate and off, however you possibly can’t create schedules with goal temperatures all through the day. There are additionally dwelling, away, and trip modes within the SmartThinQ app, however they’re amazingly obtuse about what they do and the way they are often adjusted.

The issue stems from the truth that SmartThinQ is designed to regulate a selection of LG good home equipment—fridges, washers and dryers, robotic vacuums, and even LG TVs—so most of the choices inside it don’t apply to its A/C items in any respect.

Inverter tech for the win

With a price ticket that’s not all that a lot larger than in any other case comparable window air conditioners that don’t have inverter motors or Wi-Fi capabilities, the LG LW1517IVSM may be very simple to advocate. It will be an incredible decide even with out its good capabilities. I’m not a giant fan of LG’s SmartThinQ app, however if you happen to don’t want in-depth scheduling, that received’t matter. And if micro management is a must have function, you possibly can at all times add a third-party controller, like one of many ones talked about above.

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