6 Best Quiet Portable Air Conditioners of 2026
We compared six quiet single-hose portable air conditioners on listed noise, sleep modes, cooling, drainage and controls.
By Daniel Brooks
Updated October 17, 2026
Quiet portable air conditioners matter most in rooms where you sleep, work or watch TV. Because a portable keeps its compressor inside the room, noise is the most common complaint about this type of air conditioner, and the gap between a loud and a quiet unit is easy to hear. Our list of the best quiet portable air conditioners compares six single-hose units on listed noise, sleep modes, real-world cooling, drainage and controls. For every single-hose model we cover, see our Single-Hose Portable Air Conditioners page.
Every unit here lists 45 dB or less at some setting, mostly in sleep mode. Brands measure noise in different ways and at different fan speeds, so we note whether each figure is for normal cooling or for a sleep setting.
All Products Compared
| Product | Best For | Cooling Capacity | Room Size | Noise | Notable Feature |
|---|---|---|---|---|---|
| UTHFY 12,000 BTU Portable Air Conditioner | Overall | 12,000 BTU | Up to 550 sq ft | Sleep below 40dB, 35 db spec | Fits hung and sliding windows |
| GrowthWing 12,000 BTU Smart WiFi Portable Air Conditioner | Smart and quiet | 12,000 BTU | Up to 550 sq ft | 42dB sleep | Wi-Fi, 72 hours drainage-free |
| KoolSiln 14,000 BTU Portable Air Conditioner | Large rooms | 14,000 BTU | Up to 700 sq ft | As low as 48dB, 44 db spec | Wi-Fi, auto-evaporation |
| Tehanld 12000 BTU Portable Air Conditioner | Efficiency | 12,000 BTU | Up to 600 sq ft | 42dB sleep | 8.1 CEER |
| Electactic 10,000 BTU Portable Air Conditioner | Budget quiet | 10,000 BTU | Up to 550 sq ft | 45 dB | Self-evaporating |
| DREO 8,000 BTU Portable Air Conditioner | Small bedrooms | 8000 BTU / 5000 BTU DOE | Small rooms | 45dB | Noise isolation, sleep curve |
| Award | Product | WikiCooling Score About WikiCooling ScoreThe WikiCooling Score is our own rating from 0 to 10, based on the criteria described on our How We Review page. It reflects research, not laboratory measurement, and is never influenced by manufacturers, retailers, or affiliate commissions. Learn more › | |
|---|---|---|---|
| Best Value |
UTHFY 12,000 BTU Portable Air Conditioner
|
8.8/10 | Buy |
| Best Premium |
GrowthWing 12,000 BTU Smart WiFi Portable Air
|
8.6/10 | Buy |
KoolSiln 14,000 BTU Portable Air Conditioner
|
7.5/10 | Buy | |
| Best Budget |
Tehanld 12000 BTU Portable Air Conditioner
|
8.4/10 | Buy |
| Best Overall |
Electactic 10,000 BTU Portable Air Conditioner
|
9.1/10 | Buy |
DREO 8,000 BTU Portable Air Conditioner
|
8.1/10 | Buy |
UTHFY 12,000 BTU Portable Air Conditioner
This portable air conditioner delivers 12,000 BTU of cooling for rooms up to 550 square feet. It includes dehumidifier, fan, and sleep modes, with a quiet 35 dB operation and a 24-hour timer. Suitable for bedrooms and small to medium spaces.
Pros
- Powerful 12,000 BTU cooling
- Quiet 35 dB operation
- Multiple operating modes
- Easy roll-around with casters
- Includes remote and timer
Cons
- Single-hose exhaust design
- No heat pump for year-round use
- Heavy at 64.6 pounds
GrowthWing 12,000 BTU Smart WiFi Portable Air
This portable air conditioner from GrowthWing delivers 12,000 BTU of cooling for rooms up to 550 sq ft, with smart WiFi and voice control for convenient operation. Its auto-evaporation system minimizes manual draining, while sleep mode keeps noise as low as 42dB. It's a good fit for users who prioritize connectivity and low-maintenance cooling.
Pros
- Smart WiFi and voice control
- Auto-evaporation minimizes manual draining
- Quiet operation in sleep mode
- Covers rooms up to 550 sq ft
- Quick and easy installation
Cons
- No heating mode
- Hose may be short for some window setups
- Heavy at 66 pounds
KoolSiln 14,000 BTU Portable Air Conditioner
This portable air conditioner delivers 14,000 BTU of cooling power for rooms up to 700 square feet, with a low noise level of 44 dB. It features WiFi and remote control, auto-evaporation technology, and a 3-in-1 design that also works as a fan and dehumidifier. Suitable for large rooms, offices, or garages where easy installation and smart control are priorities.
Pros
- 14,000 BTU cooling capacity
- Cools up to 700 sq ft
- Low noise at 44 dB
- WiFi and remote control
- Tool-free installation in minutes
Cons
- Heavy at 66.6 lbs
- No heating mode
- Dehumidifier mode may require manual draining
Tehanld 12000 BTU Portable Air Conditioner
This portable air conditioner delivers 12,000 BTU of cooling for rooms up to 600 sq ft, making it a strong choice for bedrooms and small living spaces. Its standout sleep mode runs at 42 dB with auto-dimming lights, while the upward airflow and auto-swing prevent direct drafts. With tool-free setup and a full-function remote, it suits anyone seeking quiet, efficient cooling at a budget-friendly price.
Pros
- Quiet sleep mode at 42 dB
- Tool-free setup in minutes
- Effective cooling for 600 sq ft
- Remote control with long range
- Good value for the price
Cons
- Manual drain required for condensate
- Fits only sliding and double-hung windows
- Heavy at 62 pounds
Electactic 10,000 BTU Portable Air Conditioner
This portable air conditioner from Electactic provides 10,000 BTU cooling for rooms up to 550 sq ft. It offers four modes, a self-evaporating system, and a 24-hour timer. A budget-friendly choice for medium rooms where window units aren't an option.
Pros
- Cools rooms up to 550 sq ft
- Self-evaporating system reduces draining
- Four modes including dehumidifier
- Quiet operation at 45 dB
- Includes window installation kit
Cons
- Heavy at 44.6 lbs
- No heating mode
- Requires window venting for exhaust
DREO 8,000 BTU Portable Air Conditioner
This DREO portable air conditioner combines 8,000 BTU ASHRAE (5,000 BTU SACC) cooling with a fan and dehumidifier in one unit. Its drainage-free operation and smart controls make it a convenient choice for cooling a small bedroom or office.
Pros
- Powerful cooling for small rooms
- Drainage-free in most conditions
- Smart app and voice control
- Quiet at 45 dB
- Easy installation with included kit
Cons
- Heavy at 55 pounds
- Window panels may require extra sealing
- Drain hose needed in high humidity
Top 3 Quiet Portable Air Conditioners Reviewed
#1 UTHFY 12,000 BTU Portable Air Conditioner: Best Overall
Why We Picked It
The UTHFY 12,000 BTU unit lists the lowest noise figures in this guide. Its smart sleep mode runs below 40dB, and the spec sheet gives a noise level of 35 db. It has a 4.6 rating from 19 ratings, and UTHFY rates it for rooms up to 550 sq ft, so you get real capacity along with the low noise.
The sleep mode adjusts temperature and wind speed automatically for nighttime use, and a 24-hour timer lets you set how long it runs. It has cooling, dehumidification and fan modes, and an adjustable temperature range from 61 to 90 degrees F. UTHFY uses a newer high-efficiency compressor for faster cooling. A high-definition LED display, physical buttons and a full-function remote handle control, and 360 degree silent casters and a built-in handle help you move it. The window kit fits vertical and horizontal sliding windows as well as single and double hung windows, which covers more homes than most kits here.
Key Specifications
- Cooling Capacity: 12,000 BTU
- Room Size: Up to 550 sq ft
- Noise Level: Sleep below 40dB, 35 db in the spec sheet
- Power: 1050 watts
- Window Fit: Sliding and hung windows
- Weight: 64.6 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
UTHFY does not say at what fan speed the 35 db figure was measured, so expect more noise on high. It also lacks Wi-Fi, which the GrowthWing and KoolSiln offer.
Best For
This unit is best for a bedroom or home office where the lowest possible noise matters more than smart features.
Check the current price and availability of the UTHFY 12,000 BTU Portable Air Conditioner on Amazon.
#2 GrowthWing 12,000 BTU Smart WiFi Portable Air Conditioner: Best Smart Quiet Pick
Why We Picked It
The GrowthWing HAC905WF combines a quiet sleep mode with full smart control. It has a 4.5 rating from 11 ratings. Sleep Mode runs as low as 42dB and automatically dims the display, so it does not light up a dark bedroom. GrowthWing lists 12,000 BTU ASHRAE for spaces up to 550 sq ft, with an upgraded compressor and a wide 77 degree air outlet.
You control it through the app, by voice or with the included remote, and you can set temperature, fan speed, modes and schedules. The self-evaporating system provides up to 72 hours of drainage-free cooling in most environments, so you will not be woken by a full tank, and a drain hose is included for long dehumidifier sessions. The adjustable window panels fit horizontal and vertical sliding windows from 20.39 to 67 inches, and setup needs no tools. It uses R32 refrigerant and has a dehumidifying capacity of 76 pints.
Key Specifications
- Cooling Capacity: 12,000 BTU ASHRAE
- Room Size: Up to 550 sq ft
- Noise Level: As low as 42dB in Sleep Mode
- Smart Control: App, voice, remote
- Drainage: Up to 72 hours drainage-free
- Weight: 66 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
The 42dB figure applies to Sleep Mode, so it will be louder when cooling at full power during the day. Check that your window slides before you order.
Best For
This unit is best for a bedroom where you want quiet nights, phone and voice control, and no draining.
Check the current price and availability of the GrowthWing 12,000 BTU Smart WiFi Portable Air Conditioner on Amazon.
#3 KoolSiln 14,000 BTU Portable Air Conditioner: Best for Large Rooms
Why We Picked It
The KoolSiln HAC-902WF brings low-noise design to a large-room unit. It has a 3.8 rating from 41 ratings. KoolSiln designs it for light sleepers, with noise-reduction technology that keeps sound as low as 48dB in the features and 44 db in the spec sheet. It delivers 14,000 BTU of cooling for rooms up to 700 sq ft through an enlarged 77 degree air outlet.
Sleep Mode dims the display, reduces fan noise and holds your set temperature all night, and an 8-hour sleep timer lets it switch off on its own. KoolSiln’s 360 degree auto-evaporation tech gives 72-hour drainage-free cooling, converting excess water into vapor so there are no wet messes. You can adjust temperature, fan speed, modes and schedules through the app, by voice or with the remote. It is a 3 in 1 unit with cooling, fan and dehumidifier modes, and the tool-free kit fits vertical and horizontal windows from 20.39 to 67 inches. KoolSiln lists a 1 year+ warranty and lifetime tech support.
Key Specifications
- Cooling Capacity: 14,000 BTU
- Room Size: Up to 700 sq ft
- Noise Level: As low as 48dB (features), 44 db (spec)
- Smart Control: App, voice, remote
- Drainage: 72-hour drainage-free
- Weight: 66.6 pounds
| Pros | Cons |
|---|---|
|
|
Things to Consider
The listing gives two noise figures, so treat 48dB as the safer expectation. As a large unit, it will be louder than the 12,000 BTU picks above at full power.
Best For
This unit is best for a large bedroom, living room or open office where you need big cooling without a loud unit.
Check the current price and availability of the KoolSiln 14,000 BTU Portable Air Conditioner on Amazon.
Other Models Worth Considering
Tehanld 12000 BTU Portable Air Conditioner (TH1309PAC12). Sleep Mode runs at 42dB and dims the display, and upward airflow with auto-swing avoids blowing straight at you. It covers up to 600 sq ft, lists an 8.1 CEER rating, the best efficiency in this guide, and includes a child lock. It needs manual or hose drainage and has a 4.4 rating from 45 ratings.
Electactic 10,000 BTU Portable Air Conditioner. Lists 45 dB with a quiet sleep mode, a self-evaporating system and a full-tank shutoff. It cools spaces up to 550 sq ft and removes up to 40 pints per day in dehumidifier mode. It has a 4.8 rating from 18 ratings.
DREO 8,000 BTU Portable Air Conditioner (318S). A patented noise isolation system reduces compressor and turbulence noise to just 45dB. The DREO app adds a custom sleep curve and humidity monitoring, and it works with Siri, Alexa and Google Home. It suits a small bedroom and has a 4.2 rating from 1,340 ratings.
What to Expect from Quiet Portable Air Conditioners
A single-hose portable can never be as quiet as a split system, because the compressor runs inside your room. The quietest units use better insulation, slower sleep settings and dimming displays to keep nights calm. Most brands quote their lowest figure, often in sleep mode, so expect daytime cooling at full power to be louder.
For more options, see our guides to portable air conditioners for bedrooms and smart portable air conditioners. The product cards show the current price for each unit.
How to Choose a Quiet Portable Air Conditioner
Size the Unit to the Space
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 |
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.
A unit sized right for your room can run at lower fan speeds, which is quieter than a small unit working flat out.
Read Where the Noise Figure Comes From
Sleep-mode figures like the UTHFY’s below 40dB and the GrowthWing’s 42dB are lower than normal cooling noise. The Electactic and DREO list 45 dB without tying it to a mode.
Look for a Dimming Display
The GrowthWing, KoolSiln and Tehanld dim their displays in sleep mode, which helps in a dark bedroom.
Avoid Night-Time Tank Alerts
The GrowthWing, KoolSiln, Electactic and DREO list drainage-free or self-evaporating systems. The Tehanld needs manual or hose drainage.
How We Evaluate Quiet Portable Air Conditioners
We rank portable air conditioners on manufacturer specifications, listing details and aggregated buyer ratings. For this list we kept only single-hose units that list 45 dB or less at some setting. We weighed listed noise, sleep features and buyer feedback first, giving more weight to ratings from larger numbers of buyers, then compared real-world cooling, room coverage, drainage and controls. Where a listing gives two different figures, we note both and use the more conservative one.
Frequently Asked Questions
What is the quietest portable air conditioner?
In this guide, the UTHFY 12,000 BTU, with a sleep mode below 40dB and a 35 db spec sheet figure.
Is 45 dB quiet for a portable AC?
Yes. Many single-hose portables list figures in the low to mid 50s, so 45 dB or lower is quiet for this type.
Which quiet portable has Wi-Fi?
The GrowthWing and KoolSiln offer app and voice control, and the DREO works with Siri, Alexa and Google Home.
Why is my portable louder than its listed noise?
Brands often quote the lowest setting or sleep mode. At full cooling and high fan speed, noise rises.
Final Verdict
The UTHFY 12,000 BTU Portable Air Conditioner is the best quiet portable air conditioner, with a sleep mode below 40dB and coverage for rooms up to 550 sq ft. If you want smart control as well, choose the GrowthWing 12,000 BTU Smart WiFi Portable Air Conditioner with its 42dB Sleep Mode. For a large room, the KoolSiln 14,000 BTU Portable Air Conditioner keeps noise low at a bigger capacity.
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.