On this page
- Compare at a glance
- The picks
- How we picked
- Window or portable for an 8,000 BTU room
- BTU and seasonally adjusted cooling capacity
- Noise and efficiency
- Room size and placement
- Questions people ask
Compare at a glance
| Model | Type | Rated cooling | Room size | Rated noise | ENERGY STAR | Buy |
|---|
| TCL H8W4KW | Window | 8,000 BTU | Up to 350 sq ft | Not listed | Not listed | Check price on Amazon |
|---|
| Hisense BTU Window AC Inverter | Window | 8,000 BTU | Up to 350 sq ft | Not listed | Not listed | Check price on Amazon |
|---|
| Midea Air Conditioner Rated Savings | Window | 7,800 BTU | Up to 340 sq ft | Not listed | Yes | Check price on Amazon |
|---|
| Frigidaire BTU | Window | 8,000 BTU | Up to 350 sq ft | Not listed | Yes | Check price on Amazon |
|---|
| Hisense HAP0825TWD 8,000 BTU | Portable | 8,000 BTU SACC | Up to 350 sq ft | 42 dB | Not listed | Check price on Amazon |
|---|
| Hisense API0825UW1D 8,000 BTU | Portable | 8,000 BTU SACC | Up to 350 sq ft | Not listed | Not listed | Check price on Amazon |
|---|
| Hisense AP55023HR1GD 8,000 BTU | Portable | 8,000 BTU SACC | Up to 550 sq ft | Not listed | Not listed | Check price on Amazon |
|---|
| Midea Inverter 8,000 BTU Window | Window | 8,000 BTU | Up to 350 sq ft | Not listed | Not listed | Check price on Amazon |
|---|
| LG LW8024RSMX 8,000 BTU | Window | 8,000 BTU | Up to 350 sq ft | Not listed | Not listed | Check price on Amazon |
|---|
| BLACK+DECKER BPACT05SM 8,500 BTU | Portable | 5,100 BTU SACC | Up to 350 sq ft | Not listed | Not listed | Check price on Amazon |
|---|
Specs are the figures each maker lists. "Not listed" means we have no published figure yet.
The picks
No. 1Best overall 8,000 BTU window unit
TCL H8W4KW
- Type
- Window
- Rated cooling
- 8,000 BTU
- Room size
- Up to 350 sq ft
- Rated noise
- Not listed
- ENERGY STAR
- Not listed
This window unit leads with an 8,000 BTU rating, 350 sq ft coverage, a 40 db noise level and a 15 SEER. Compared with the next pick, the Hisense Inverter 8,000 BTU, it adds a published efficiency figure, while the Hisense lists a lower noise figure. The Midea 7,800 BTU below it carries ENERGY STAR certification but is rated at 7,800 BTU.
Why it made the list
- 8,000 BTU rating
- 350 sq ft coverage
- 40 db noise level
- 15 SEER
Trade-offs
- No ENERGY STAR flag in the listing
- No dehumidifier mode listed
Good fit if
- A room up to 350 sq ft
- A window where app control is useful
Skip if
- You need a portable unit
- You want a unit with a listed dehumidifier mode
Bottom line: The TCL Q-Series 8000 BTU is the strongest all-around window pick for a typical 350 sq ft room.
Check price on AmazonNo. 2Quietest 8,000 BTU window unit
Hisense BTU Window AC Inverter
- Type
- Window
- Rated cooling
- 8,000 BTU
- Room size
- Up to 350 sq ft
- Rated noise
- Not listed
- ENERGY STAR
- Not listed
This window unit lists a 37 db noise level, the lowest among the window picks, with an 8,000 BTU rating and 350 sq ft coverage. It ranks below the TCL Q-Series because it does not publish a SEER figure, but above the Midea 7,800 BTU because it is rated at a full 8,000 BTU. Its inverter compressor and app control make it a strong bedroom option.
Why it made the list
- 37 db noise level
- 8,000 BTU rating
- 350 sq ft coverage
- Inverter compressor
Trade-offs
- No SEER figure published
- No ENERGY STAR flag in the listing
Good fit if
- A bedroom where low noise matters
- A room up to 350 sq ft
Skip if
- You want a published efficiency rating
- You need a portable unit
Bottom line: The Hisense Inverter 8,000 BTU is the quietest window pick for an 8,000 BTU room.
Check price on AmazonNo. 3Best ENERGY STAR 8,000 BTU window
Midea Air Conditioner Rated Savings
- Type
- Window
- Rated cooling
- 7,800 BTU
- Room size
- Up to 340 sq ft
- Rated noise
- Not listed
- ENERGY STAR
- Yes
This window unit carries an ENERGY STAR flag and lists a 15.1 SEER, a 39 db noise level and 340 sq ft coverage. It ranks below the Hisense Inverter 8,000 BTU because its rating is 7,800 BTU rather than 8,000, but above the Frigidaire 8,000 BTU Inverter because it is quieter and has a slightly higher SEER.
Why it made the list
- ENERGY STAR certified
- 15.1 SEER
- 39 db noise level
- 340 sq ft coverage
Trade-offs
- Rated at 7,800 BTU rather than 8,000
- 52.6 pounds
Good fit if
- A room up to 340 sq ft
- An energy-conscious window installation
Skip if
- You want an exact 8,000 BTU rating
- You need a portable unit
Bottom line: The Midea 7,800 BTU is the most efficient window pick in the 8,000 BTU class.
Check price on AmazonNo. 4Best inverter window with app
Frigidaire BTU
- Type
- Window
- Rated cooling
- 8,000 BTU
- Room size
- Up to 350 sq ft
- Rated noise
- Not listed
- ENERGY STAR
- Yes
This window unit lists an 8,000 BTU rating, 350 sq ft coverage, a 41 db noise level, a 15 SEER and an ENERGY STAR flag. It ranks below the Midea 7,800 BTU because it is slightly louder and has a marginally lower SEER, and it is the last window unit before the portables, which are ranked among themselves on their seasonally adjusted cooling capacity.
Why it made the list
- 8,000 BTU rating
- ENERGY STAR certified
- 15 SEER
- 41 db noise level
Trade-offs
- 55 pounds listed weight
- App control but no voice control listed
Good fit if
- A room up to 350 sq ft
- A window installation with Wi-Fi
Skip if
- You need a portable unit
- You want the lowest possible noise
Bottom line: The Frigidaire 8,000 BTU Inverter is a solid ENERGY STAR window pick with app control.
Check price on AmazonNo. 5Best 8,000 BTU portable for cooling
Hisense HAP0825TWD 8,000 BTU
- Type
- Portable
- Rated cooling
- 8,000 BTU SACC
- Room size
- Up to 350 sq ft
- Rated noise
- 42 dB
- ENERGY STAR
- Not listed
This portable lists a seasonally adjusted cooling capacity of 8,000 BTU, matching the other Hisense portable picks, along with a 42 db noise level, 350 sq ft coverage and a dual hose design. Among the portables it ranks above the Hisense API0825UW1D because it uses less wattage and includes a room size.
Why it made the list
- 8,000 BTU seasonally adjusted cooling capacity
- 42 db noise level
- 350 sq ft coverage
- Dual hose design
Trade-offs
- Heavier at 73.4 pounds
- No heating function listed
Good fit if
- A room up to 350 sq ft without window mounting
- A space where a dual hose portable fits
Skip if
- You need heating
- You want a window unit
Bottom line: The Hisense HAP0825TWD 8,000 BTU is the top portable pick for a 350 sq ft room, tied on seasonally adjusted cooling capacity with the other Hisense portables.
Check price on AmazonNo. 6Best 8,000 BTU portable with heat
Hisense API0825UW1D 8,000 BTU
- Type
- Portable
- Rated cooling
- 8,000 BTU SACC
- Room size
- Up to 350 sq ft
- Rated noise
- Not listed
- ENERGY STAR
- Not listed
This portable lists a seasonally adjusted cooling capacity of 8,000 BTU, a 39 db noise level and a heating and cooling function. It ranks below the Hisense HAP0825TWD because it uses 910 watts and does not list a room size, but above the Hisense AP55023HR1GD because it publishes a noise level and wattage.
Why it made the list
- 8,000 BTU seasonally adjusted cooling capacity
- 39 db noise level
- Heating and cooling function
- Tower design
Trade-offs
- 910 watts
- No room size listed
Good fit if
- A room that needs both cooling and heating
- A space where a tower portable fits
Skip if
- You only need cooling
- You want a listed room size
Bottom line: The Hisense API0825UW1D 8,000 BTU is the portable to choose when heating matters.
Check price on AmazonNo. 7Largest listed room size in a portable
Hisense AP55023HR1GD 8,000 BTU
- Type
- Portable
- Rated cooling
- 8,000 BTU SACC
- Room size
- Up to 550 sq ft
- Rated noise
- Not listed
- ENERGY STAR
- Not listed
This portable lists a seasonally adjusted cooling capacity of 8,000 BTU and a 550 sq ft coverage figure, the largest room size among the portable picks. It ranks below the Hisense API0825UW1D because it does not publish a noise level or wattage. The 550 sq ft figure is the maker's own, so compare it with your room before relying on it.
Why it made the list
- 8,000 BTU seasonally adjusted cooling capacity
- 550 sq ft coverage
- Dual hose design
- Smart app control
Trade-offs
- No noise level listed
- No wattage listed
Good fit if
- A buyer who wants app control on a portable
- A space where a dual hose portable is preferred
Skip if
- You want a published noise level
- You need a window unit
Bottom line: The Hisense AP55023HR1GD 8,000 BTU is the portable pick for the largest listed room size.
Check price on AmazonNo. 8Voice-capable window with Eco mode
Midea Inverter 8,000 BTU Window
- Type
- Window
- Rated cooling
- 8,000 BTU
- Room size
- Up to 350 sq ft
- Rated noise
- Not listed
- ENERGY STAR
- Not listed
This window unit lists an 8,000 BTU rating, 350 sq ft coverage, a 50 db noise level and a 14 SEER. It ranks above the LG LW8024RSMX because it lists a lower noise level and a higher SEER figure.
Why it made the list
- 8,000 BTU rating
- 350 sq ft coverage
- Voice control
- 14 SEER
Trade-offs
- 50 db noise level
- No ENERGY STAR flag in the listing
Good fit if
- A smart home with voice assistants
- A room up to 350 sq ft
Skip if
- You want the quietest window unit
- You need a portable unit
Bottom line: The Midea Inverter 8,000 BTU Window is a voice-capable window pick with a 14 SEER and Eco mode.
Check price on AmazonNo. 9Best Wi-Fi window with remote
LG LW8024RSMX 8,000 BTU
- Type
- Window
- Rated cooling
- 8,000 BTU
- Room size
- Up to 350 sq ft
- Rated noise
- Not listed
- ENERGY STAR
- Not listed
This window unit lists an 8,000 BTU rating, 350 sq ft coverage, a 52 db noise level and Wi-Fi with app, remote and voice control. It ranks below the Midea Inverter 8,000 BTU Window because it is louder and has a lower SEER, and it is the last window unit in the list.
Why it made the list
- 8,000 BTU rating
- 350 sq ft coverage
- Wi-Fi with app and voice control
- Filter light reminder
Trade-offs
- 52 db noise level
- No ENERGY STAR flag in the listing
Good fit if
- A room up to 350 sq ft
- A home using app or voice control
Skip if
- You want the quietest unit
- You need a portable unit
Bottom line: The LG LW8024RSMX 8,000 BTU is a solid connected window pick for a 350 sq ft room.
Check price on AmazonNo. 10Best portable for 3-in-1 operation
BLACK+DECKER BPACT05SM 8,500 BTU
- Type
- Portable
- Rated cooling
- 5,100 BTU SACC
- Room size
- Up to 350 sq ft
- Rated noise
- Not listed
- ENERGY STAR
- Not listed
This portable lists a seasonally adjusted cooling capacity of 5,100 BTU, an 8,500 BTU rating, 350 sq ft coverage and a 52 db noise level. It is the last pick because its seasonally adjusted cooling capacity is the lowest among the portable picks, but it still fits the 7,500 to 8,500 BTU range with a simple 3-in-1 design.
Why it made the list
- 350 sq ft coverage
- 3-in-1 operation
- 52 db noise level
Trade-offs
- 5,100 BTU seasonally adjusted cooling capacity
- No smart app control listed
Good fit if
- A room up to 350 sq ft
- A simple portable with dehumidifier and fan modes
Skip if
- You want a full 8,000 BTU seasonally adjusted cooling capacity
- You need a window unit
Bottom line: The BLACK+DECKER BPACT05SM 8,500 BTU is a straightforward portable for basic cooling, drying and fan use.
Check price on AmazonHow we picked
To choose these picks, we compared window and portable units in the 7,500 to 8,500 BTU range using only the specifications makers publish. No unit was handled. Window units are compared on their stated BTU figure, and portables are ranked on their seasonally adjusted cooling capacity where the maker lists one. When a portable has no seasonally adjusted cooling capacity, we say so and do not compare its BTU figure with another portable's seasonally adjusted figure.
We favored units that publish more of the specs that matter for an 8,000 BTU room: room size, noise level, efficiency and control options. Picks are ordered by how well their published figures fit typical 8,000 BTU cooling needs.
Window or portable for an 8,000 BTU room
An 8,000 BTU window unit mounts in a window, and the ENERGY STAR sizing table pairs 8,000 BTU with rooms of 300 up to 350 sq ft. A portable unit rolls on casters and vents through a hose, but its seasonally adjusted cooling capacity is often lower than its listed BTU figure. If you cannot use a window, compare portables on their seasonally adjusted cooling capacity, which runs from 5,100 to 8,000 BTU among the portable picks here. See our portable vs window comparison.
BTU and seasonally adjusted cooling capacity
For window units, the BTU figure is the cooling capacity the maker states. For portables, makers state a seasonally adjusted cooling capacity worked out with the DOE rating method. Compare portables only on that figure. That figure is often lower than the BTU figure on the box; among the portable picks here it runs from 5,100 to 8,000 BTU. Use the maker's room size in sq ft as a starting point. See what BTU and SACC ratings mean.
Noise and efficiency
Noise levels among these picks run from 37 db to 52 db. A lower figure matters most in a bedroom. The window listings here give an efficiency figure labeled SEER, while the federal efficiency rating for room and portable units is CEER, so read the listing figure as the maker's own. A portable's seasonally adjusted cooling capacity is a capacity figure, not an efficiency rating.
Room size and placement
Match the maker's sq ft figure to your room. For sunny or kitchen spaces, choose a unit with a higher BTU or seasonally adjusted cooling capacity. For window type, mounting and tilt, follow the owner's manual for your model. Portables vent their exhaust hose through a window kit. See choosing BTU for room size.
Related: Best 10000 BTU Air Conditioner: 10,000 BTU AC Reviews · Best 12000 BTU Portable Air Conditioner: Reviews by SACC · Best 14000 BTU Portable Air Conditioner: Reviews by Spec
Questions people ask
What is the difference between BTU and seasonally adjusted cooling capacity?
BTU is the cooling figure the maker states for window units. For portables, the seasonally adjusted cooling capacity is the figure makers state under the DOE rating method. Compare portables only on that figure, never against a window unit's BTU.
Can an 8,000 BTU unit cool a 350 sq ft room?
Yes, many window units and some portables list 350 sq ft coverage at 8,000 BTU. Check the maker's sq ft figure and adjust for sun, ceiling height and heat sources.
Are portable 8,000 BTU units as strong as window units?
Compare a portable on its seasonally adjusted cooling capacity, which is often lower than the BTU figure on the box. Among the portable picks here it runs from 5,100 to 8,000 BTU, so read that figure rather than the number in the name.
How loud is an 8,000 BTU air conditioner?
Published noise levels among these picks run from 37 db to 52 db. The quietest window pick here lists 37 db, while the two quietest portables list 39 and 42 db. Lower is better for bedrooms.
Last updated November 6, 2026
