The LG LP0721WSR is a single-hose portable A/C designed for use in medium-sized spaces. It has an advertised cooling capacity of 7,000 BTU/hr and an advertised coverage of 300 ft² (28 m²). It features a separate dehumidification mode, and you can adjust settings using the remote control, but it lacks Wi-Fi connectivity for app functionality or smart home integration like higher-end LG models.
Our Verdict
The LG LP0721WSR is a sub-par option for cooling large rooms. Its capacity is simply too low for it to reduce the temperature in a large space to a setpoint within an acceptable time frame. Using it in a large room forces its compressor to run constantly, increasing wear and tear over time. Its single-hose design is also rather inefficient, and its compressor is somewhat on the loud end.
Low cooling capacity.
Modest capacity results in near-constant up-time in oversized spaces, increasing wear and tear over time.
Poor overall maintenance and cooling efficiency.
The LG LP0721WSR is a decent option for use in bedrooms and other small rooms. It's a decently compact unit overall, so you can shove it against a wall or stow it away in a closet without it taking up too much space. Its compressor works at a steady rate even in modestly sized spaces, so you won't experience any unpleasant increases in humidity or temperature while it's working. However, its compressor is also somewhat loud and can be a bit of a distraction when you're trying to get some rest.
Maintains consistent temperature and humidity levels.
Decently compact size.
Relatively high compressor noise.
Poor overall maintenance and cooling efficiency.
The LG LP0721WSR's overall efficiency is poor. Its single-hose design is somewhat inefficient, allowing warm outside air to leak into the room it's in and forcing the unit to work harder in both the cooling and maintenance phases.
Poor overall maintenance and cooling efficiency.
Due to its modest capacity, the LG LP0721WSR isn't likely to be oversized for many environments, and it does a good job of maintaining ambient conditions. Its compressor is forced to work at a consistent rate even within modestly sized spaces, steadying the desired setpoint and the perceived ambient humidity level. However, this results in higher energy consumption and increased wear and tear on the compressor.
Maintains consistent temperature and humidity levels.
Poor overall maintenance and cooling efficiency.
The LG LP0721WSR is a little on the louder end of the scale. Its compressor is noticeably louder than that of some other alternatives, and it can be a distraction if you have it set up in your bedroom or home office. Its fan-only modes are rather quiet, though, so you might be forced to rely on those settings if you're a particularly light sleeper.
Relatively high compressor noise.
Performance Usages
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Differences Between Sizes And Variants
The LG LP0721WSR is only available in a single color variant: 'White.' For those interested, here's the product label.
Let us know in the comments if you come across another variant of this air conditioner.
Popular Air Conditioner Comparisons
The LG LP0721WSR is a basic single-hose portable A/C, only really suited for smaller spaces like bedrooms or offices. It competes in a fairly crowded section of the market with many direct competitors. However, compared to options like the De'Longhi Pinguino Compact PACEM360-6ALWH, the Black+Decker BPACT12HWT, and the Whynter Elite ARC-122DS, the LG is simply lacking in terms of capacity and will take longer to cool an equivalently sized room. On the upside, it does consume a little less power than those models.
Neither the LG LP0721WSR nor the Black+Decker BPACT12HWT are especially noteworthy A/C units, but if you're in need of a single-hose portable unit, they've each got their own strengths and weaknesses. The Black+Decker offers greater cooling capacity and will chill the air in a comparably sized room faster. That said, its compressor cycling will result in more noticeable swings in temperature and humidity compared to the LG. It also uses R410a as a refrigerant, which incurs a higher environmental footprint compared to R32, used by the LG and other newer A/C units.
The Whynter Elite ARC-122DS is better than the LG LP0721WSR. The Whynter has a greater overall cooling capacity and won't struggle to the same extent in oversized areas. It also runs far more quietly. It's worth noting that the LG's modest capacity does have a bit of an upside, however, in that its compressor is forced to run almost constantly to achieve your desired temperature instead of cycling on and off, so there are no big swings in ambient humidity or temperature levels.
Test Results
There's a strap at the back of this unit that's meant to hold any excess length of cable in place. However, it's very brittle, and the retention notch snapped off when we attempted to unfasten it.
This air conditioner's cooling capacity is poor. It lacks the capacity to cool even small areas in a timely fashion. This unit was unable to reach the desired 21 °C (69.8 °F) target from a 28 °C (82.4 °F) starting point without our maximum time allotment of 70 minutes.
This unit's cooling efficiency is poor. It's a single-hose model, which means it intakes indoor air to pass over its condenser and cool the unit while operating. This generates negative pressure inside the room it's placed in, leaching in warm outside air and forcing the unit to work even harder. The result is that this unit consumes far more power than dual-hose units with similar capacity, all the while having far less capacity.
This unit's energy efficiency while maintaining the setpoint is bad. It's forced to work very hard due to its single-hose design, which doesn't leave an efficient means of cooling its compressor while it's running.
This unit does an excellent job of maintaining humidity levels, but with an important caveat. As a low-capacity portable unit, its compressor must run constantly to cool even small spaces. This minimizes any swings in humidity levels, but it also puts more wear and tear on its compressor.
