SereneLife 8,000 BTU Portable AC Review: Compact and Simple
A compact 3-in-1 portable air conditioner rated 8,000 BTU ASHRAE for rooms up to 300 square feet, with a 24-hour timer, remote, washable filter and a window vent kit.
By Daniel Brooks
Updated October 15, 2026
The SereneLife 8,000 BTU Portable AC is a compact 3-in-1 unit that cools, dehumidifies and runs as a fan. Sold as model SLPAC182B.7, it is one of the more affordable portable air conditioners from the brand, built for bedrooms, offices and classrooms up to 300 square feet. It has a 4.1 out of 5 average across more than 86 ratings on its listing.
SereneLife lists 8,000 BTU on the ASHRAE scale, two fan speeds, a 24-hour timer, a remote and a washable filter. A window vent kit and a drain pipe come in the box.
Our Verdict
The SereneLife 8,000 BTU is a good fit for a small bedroom, dorm or office where you want simple, inexpensive spot cooling. Its 300 square foot rating is realistic for the size, the footprint of 11.8 by 11.8 inches fits almost anywhere, and the controls are easy for anyone to use.
The limits are what you would expect at this level. There is no SACC rating, only two fan speeds and no smart features, and 54 dBA is typical portable noise. For a small room and a modest budget, it does the basics well.
SereneLife 8,000 BTU Portable Air Conditioner
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Key Specifications
| Feature | Specification |
|---|---|
| Brand | SereneLife |
| Model | SLPAC182B.7 |
| Type | Portable air conditioner, 3-in-1 |
| Cooling Capacity | 8,000 BTU ASHRAE |
| Room Size | Up to 300 sq ft (manufacturer) |
| Noise Level | 54 dBA |
| Power | 115 volts, 800 watts |
| Dehumidifying | Up to 1 liter per hour |
| Fan Speeds | 2 |
| Timer | Up to 24 hours |
| Dimensions | 11.8″D x 11.8″W x 27.5″H |
| Weight | 47 pounds |
| Filter | Removable, washable pre-filter |
| Warranty | 1 year |
Cooling Capacity and Room Size
SereneLife rates the unit at 8,000 BTU on the ASHRAE scale and for rooms up to 300 square feet. The listing does not give a SACC or DOE figure, which would show real cooling after accounting for the exhaust hose. Even so, 300 square feet is a sensible claim for an 8,000 BTU portable.
A small to medium bedroom, home office, dorm room or classroom is the right fit. In a room with a lot of afternoon sun or several people, the unit will run longer to keep up. A rotary compressor handles cooling, and two fan speeds let you choose between faster cooling and quieter running.
Installation and Fit
The box includes the AC unit, an exhaust hose, a window installation plate, a hose connector, a drain pipe and a remote. The kit lets you vent the unit through a window without permanent mounting, which suits renters.
At 11.8 inches deep and wide and 27.5 inches tall, this is one of the most compact portables around. It weighs 47 pounds, and universal castors and rolling wheels make it easy to move between rooms. The unit plugs into a standard 115 volt outlet.
Keep the exhaust hose short and straight, and seal any gaps around the window plate to stop warm air from leaking in.
Noise, Energy Use and Efficiency
SereneLife lists 54 dBA operation. That is typical for a portable, since the compressor sits in the room with you. Light sleepers may want to cool the room before bed and use the lower fan speed overnight.
Power draw is listed at 800 watts, which is light for an air conditioner and easy on a standard circuit. Other efficiency figures in the listing are inconsistent, so we would not rely on them. As with any single-hose portable, a window unit of similar size will usually cost less to run.
Controls and Features
You can adjust temperature, fan speed and timer settings from the control panel on the unit or from the included remote. The 24-hour timer lets you schedule the unit to shut off after you fall asleep or start before you get home.
The three modes, cool, fan and dehumidifier, cover most summer needs. There is no Wi-Fi or app control, which keeps it simple for shared rooms, classrooms and offices.
Dehumidifying and Maintenance
The built-in moisture removal system removes up to 1 liter per hour, according to SereneLife. That helps on humid days when you want a drier room without running full cooling. A drain pipe is included, so check the manual for when and how to drain collected water.
The removable, washable pre-filter makes upkeep easy. Rinse it every couple of weeks during heavy use to keep airflow strong. Before storing the unit for winter, drain it fully and let it dry.
Placement Tips
Set the unit close to the window so the hose stays short, and leave a few inches of space around it so the intake is not blocked. Close the door of the room you want to cool, and draw blinds on sunny windows during the hottest hours. In a shared office or classroom, aim the airflow toward where people sit rather than at the doorway.
Portable or Window Unit?
If your window and lease allow it, a window air conditioner of similar capacity will usually cool more efficiently and run more quietly, because its compressor sits outside. The SereneLife makes the most sense when a window unit is not an option, such as in a rental with strict rules, a casement or sliding window that cannot hold a window unit, or a room where you only need cooling for part of the year. Its small size also makes it easy to store in a closet once summer is over.
Pros and Cons
| Pros | Cons |
|---|---|
| Very compact 11.8 by 11.8 inch footprint | No SACC or DOE rating listed |
| Realistic 300 sq ft room rating | 54 dBA is typical portable noise |
| 24-hour timer and remote | Only two fan speeds |
| Light 800 watt power draw | No Wi-Fi or app control |
| Washable filter and drain pipe included | Efficiency figures in the listing conflict |
Who Should Buy It
| Who Should Buy It? | Who Should Look Elsewhere? |
|---|---|
| Small bedrooms and dorm rooms | Rooms larger than about 300 sq ft |
| Offices and classrooms | Light sleepers who need a quiet unit |
| Renters who need a no-drill setup | Smart home users who want app control |
| Budget buyers who want simple controls | Buyers who compare by SACC rating |
Final Verdict
The SereneLife 8,000 BTU Portable AC is a compact, simple and affordable 3-in-1 portable for small rooms. Its realistic 300 square foot rating, tiny footprint, 24-hour timer and washable filter make it easy to live with. Expect typical portable noise and no smart features. You can check the current price and details for the SereneLife 8,000 BTU Portable Air Conditioner.
Frequently Asked Questions
What size room does the SereneLife 8,000 BTU cool?
SereneLife rates it for rooms up to 300 square feet, such as a small bedroom, office or dorm room.
Is it quiet?
SereneLife lists 54 dBA, which is typical for a portable air conditioner.
Does it have a timer?
Yes. You can set a timer of up to 24 hours from the panel or the remote.
Does it need to be drained?
A drain pipe is included. Check the manual for draining, especially after long dehumidifier sessions.
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.