The SereneLife SLPAC8 is a portable air conditioner designed for small spaces. It has an advertised coverage of 215 ft² (20 m²). It has a single-hose design and three operating modes: cooling, dehumidifying, and a fan setting. It also has a remote control, but unlike more expensive A/C units, it isn't Wi-Fi enabled, so there's no smartphone app functionality or support for smart home integration.
Our Verdict
The SereneLife SLPAC8 isn't adequate for use in large rooms. Its cooling capacity is very low overall, and simply put, it won't be able to reduce the temperature in a large space to a reasonable level within an acceptable time frame. Its single-hose design is also pretty inefficient in terms of power consumption.
Compressor rarely cycles off, leading to consistent temperature and humidity levels.
Terrible energy efficiency when running.
Cooling capacity is only suitable for the smallest of areas.
High operating noise.
Infrequent compressor cycling places increased wear and tear on components.
Relatively high energy consumption when maintaining desired temperature.
The SereneLife SLPAC8 is a mediocre option for bedrooms, nothing more. Its low cooling capacity means that it'll take a while for even small bedrooms to reach your desired temperature. Not only is its performance poor, but it's also noisy: there's minimal difference in operating noise between its highest and lowest settings, and it can keep you up if you leave it running overnight. Due to its inefficient single-hose design, it's also likely to have a bigger impact on your energy bill than a more powerful unit. On the upside, as a relatively compact, caster-mounted portable unit, you can roll it around your bedroom with minimal effort. There's no smartphone connectivity, but it does come with a remote control that lets you operate the unit without rolling out of bed.
Compact footprint keeps it from taking up space in smaller rooms.
Compressor rarely cycles off, leading to consistent temperature and humidity levels.
Terrible energy efficiency when running.
High operating noise.
Infrequent compressor cycling places increased wear and tear on components.
Relatively high energy consumption when maintaining desired temperature.
The SereneLife SLPAC8's cooling capacity is disappointing, and it's limited in what size room it can actually handle. Even a small bedroom takes a while to cool down, and anything bigger may never reach a comfortable temperature.
Cooling capacity is only suitable for the smallest of areas.
The SereneLife SLPAC8's overall efficiency is poor. Like any single-hose design, it'll have to work harder than other portable AC unit designs to offset the waste heat from its compressor, driving up power consumption in exchange for only limited overall cooling performance. As a result, this unit will have a greater impact on your energy bill than more powerful yet more efficient units.
Terrible energy efficiency when running.
Relatively high energy consumption when maintaining desired temperature.
The SereneLife SLPAC8 does a good job of maintaining ambient temperature and humidity, but with a caveat. Since its capacity is very low, its compressor is forced to run almost continuously in larger spaces, which does at least help minimize humidity and maintain a stable temperature, with no drastic swings due to compressor cycling. However, the moment the compressor cycles off, ambient humidity levels will soon rocket back up. The unit being forced to run continuously is also undesirable from a wear-and-tear perspective.
Compressor rarely cycles off, leading to consistent temperature and humidity levels.
Infrequent compressor cycling places increased wear and tear on components.
The SereneLife SLPAC8 is a noisy A/C unit. While its operating noise can be partially masked by a nearby TV, its fan speed is still rather loud, even at its lowest setting. This can make it a bit of a nuisance if you were to leave it running overnight while trying to get some rest.
High operating noise.
The SereneLife SLPAC8 is a compact A/C unit. It's quite small for a compact unit and isn't too hard to find room for in tighter offices, dorm rooms, or bedrooms.
Compact footprint keeps it from taking up space in smaller rooms.
Performance Usages
Changelog
- Updated Sep 15, 2026: We've updated this review to Test Bench 1.1. which changes how we measure and score performance as a whole. The Capacity, Efficiency When Cooling, Efficiency When Maintaining Temperature, Temperature Stability, and Humidity Stability boxes have been updated. If you're looking for further details, see the Changelog.
- Updated Jun 06, 2025: Review published.
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Differences Between Sizes And Variants
The SereneLife SLPAC8 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 SereneLife SLPAC8 is a simple, portable A/C unit. Its single-hose design already puts it at a disadvantage in cooling efficiency compared to a double-hose portable unit or a basic window A/C with similar capacity, such as the Toshiba RAC-WK0512CMRU, which has no effective way to exhaust compressor waste heat from the room it's cooling. On the upside, it does a far better job of maintaining stable ambient temperatures than the Black+Decker BPAC12HWT, though the latter does offer greater overall capacity and significantly lower operating noise.
If you're looking for alternatives, see our recommendations for the best portable air conditioners, the best bedroom air conditioners, and the best small room air conditioners.
The Black+Decker BPACT12HWT is, for the most part, a better portable A/C unit than the SereneLife SLPAC8. The Black+Decker offers significantly more cooling capacity in a roughly similarly sized package, all while producing less noise. The SereneLife's lower capacity can work to its advantage in oversized spaces, in that its compressor being forced to run constantly will minimize swings in humidity and temperature compared to the more powerful but also more erratic Black+Decker. However, this also increases energy requirements and places more wear and tear on the unit.
The SereneLife SLPAC8 is better than the De'Longhi Pinguino Compact PACEM360-6ALWH. The SereneLife is a little more compact, marginally more power-efficient at cooling and maintaining temperature, and has a higher overall cooling capacity. However, it's still far from spectacular in that last respect. Meanwhile, the De'Longhi runs noticeably quieter, especially at its lowest cooling setting.
Test Results
This A/C unit comes bundled with an extending window bracket that can be locked at any length, rather than having a set of pre-drilled holes. This provides a lot of additional flexibility in terms of where you can set up the unit.
The SereneLife SLPAC8's cooling capacity is poor. This unit takes quite a while to cool the air, even in smaller bedrooms, and it won't reduce the temperature to your desired level in larger spaces within a reasonable time frame.
As is to be expected for a portable A/C without a dedicated intake for cooling its compressor, the SereneLife SLPAC8's cooling efficiency is poor. It consumes far more energy than a window-mounted unit with a comparable cooling capacity.
The SereneLife SLPAC8's temperature-maintenance efficiency is poor. Its single-hose design draws in air from the room it's cooling, bringing in warm outside air. As a result, the unit has to work hard to maintain the desired temperature.
This A/C does a mediocre job of maintaining the desired temperature once the setpoint is reached. Compressor cycling is infrequent, but it has a noticeable impact on room temperature, with temperatures rising immediately when the unit shuts off and dropping as soon as it cycles on.
This unit does a great job of maintaining humidity levels. As a low-capacity portable unit, its compressor cycles off only briefly. This minimizes swings in humidity levels, even in more humid environments, but also puts more wear and tear on the compressor.
This A/C unit occasionally exhibits noise spikes that climb to a very noticeable 78 dBA, though these bursts last less than a second. This can be very disconcerting in smaller spaces.
The SereneLife SLPAC8 has a few quality-of-life features. There's no Wi-Fi connectivity, though you can operate this unit via the onboard controls or with the provided remote control.