A room can feel unbearable long before the rest of the house does, especially when a bedroom, office, or apartment has one stubborn hot spot. The right air conditioner needs more than a large BTU number. Window fit, exhaust design, noise, drainage, and controls determine whether it actually makes the room comfortable.
Our Best best ac units include compact window models, smart portable units, dual-hose designs, and machines that also heat or dehumidify. The BLACK+DECKER BPACT14WT is our top pick, while the rest cover quieter window cooling, small rooms, four-season use, and larger portable spaces.
Comparison table
| # | Product | Award | Cooling capacity | Type | Noise or control detail | Best for |
|---|---|---|---|---|---|---|
| 1 | BLACK+DECKER BPACT14WT | Best overall | 14, 000 BTU ASHRAE, 10, 200 BTU SACC | Portable, single hose | Wi-Fi, Alexa, Google Assistant, Follow Me remote | Smart portable cooling |
| 2 | Midea U 12, 000 BTU | Best window AC | 12, 000 BTU | U-shaped window | As low as 32 dBA, Wi-Fi | Quiet large-room cooling |
| 3 | GE 5, 000 BTU Window AC | Best for small rooms | 5, 000 BTU | Window | 52 to 56 dBA, mechanical controls | Bedrooms and offices up to 150 sq. ft. |
| 4 | DREO 515S | Best quiet portable | 12, 000 BTU ASHRAE, 8, 000 BTU SACC | Portable | 45 dB, app and voice control | Sleep and work spaces |
| 5 | Midea 12, 000 BTU Heat | Best with heat | 12, 000 BTU | Window AC and heat | 45 dBA, Wi-Fi | Four-season room comfort |
| 6 | ZAFRO 16, 000 BTU Inverter | Best dual-hose portable | 16, 000 BTU, 12, 000 BTU SACC | Dual-hose portable | 42 dB, inverter compressor | Fast, even cooling |
| 7 | Whynter ARC-14S | Best established design | 14, 000 BTU | Dual-hose portable | 51 dBA low speed | Large rooms up to 500 sq. ft. |
| 8 | BLACK+DECKER 14, 000 BTU Heat | Best portable heat pump | 14, 000 BTU cooling, 10, 000 BTU heat | Portable | Wi-Fi, voice control, Follow Me remote | Cooling and supplemental heat |
| 9 | DREO 318S | Best compact smart portable | 8, 000 BTU ASHRAE, 5, 000 BTU SACC | Portable | 45 dB, app and voice control | Small bedrooms |
| 10 | HUMHOLD 14, 000 BTU | Best airflow coverage | 14, 000 BTU ASHRAE, 10, 000 BTU SACC | Portable | Under 48 dB in sleep mode | Large rooms and flexible airflow |
1. BLACK+DECKER BPACT14WT: Best Overall
Pros
- Cooling, fan, and dehumidifier modes
- Wi-Fi and voice control
- Follow Me remote acts as a thermostat
- Window kit is included
Cons
- Single-hose portable design
- Heavy 68.3-pound body
- Large footprint for a portable unit
Best for: someone who wants one smart portable AC with broad room coverage.
The BLACK+DECKER BPACT14WT is the easiest portable unit here to recommend when you want smart controls without giving up useful everyday features. It cools, runs as a fan, and works as a dehumidifier, so it can stay useful after the hottest part of summer. The top-mounted controls and full-function remote keep basic operation simple, while the app handles remote scheduling and temperature changes.
Its 14, 000 BTU ASHRAE rating translates to 10, 200 BTU under the SACC measure included in the product details. BLACK+DECKER lists rooms up to 700 square feet, though actual results depend heavily on insulation, sun exposure, ceiling height, and how well the window kit seals. The Follow Me remote is the standout touch. It can act as the temperature sensor, which is more useful than a sensor on the unit when the machine sits across the room.
The unit supports Wi-Fi through an iOS or Android app and works with Amazon Alexa and Google Assistant. Its listed portable dimensions are 16.5 by 14.06 by 27.09 inches, while the product information lists a 68.3-pound weight. That is manageable on wheels, but moving it between floors is not a casual chore. The included window kit makes setup less complicated, though a single exhaust hose is less efficient at preventing warm air from returning than the dual-hose designs from ZAFRO and Whynter.
The weakness is the conventional portable layout. It gives you flexible placement, but it takes up floor space and cannot match the quiet, sealed feel of the Midea U window unit. Choose it over the DREO 515S if app control and Follow Me sensing matter more than a lower listed noise figure. It is the one we'd keep for a renter who needs strong cooling, smart control, and no permanent installation.
2. Midea U 12, 000 BTU: Best Window AC
Pros
- U-shaped design helps block outdoor noise
- Listed operation as low as 32 dBA
- Wi-Fi and voice control
- Window can open after installation
- Fits windows 22 to 36 inches wide
Cons
- Requires a suitable double-hung or single-hung window
- Installation is more involved than a small fixed-chassis unit
- Not portable between rooms
Best for: someone who wants quiet, connected cooling for a larger room.
The Midea U 12, 000 BTU solves the main annoyance of many window air conditioners: the compressor sits partly outside the room rather than filling the opening with a noisy box. Its U-shaped design leaves space for the window to close around the unit, which helps reduce sound and preserves more of the view. Midea lists operation as low as 32 dBA, an unusually low figure for this category.
The 12, 000 BTU capacity is intended for rooms up to 550 square feet. That makes it a better fit for a living room or open bedroom area than the 5, 000 BTU GE, whose coverage is limited to 150 square feet. The inverter system can adjust its output instead of relying only on repeated full-power cycles. Midea also lists a 15.0 CEER rating and certification from ENERGY STAR.
Installation requires attention to the window dimensions. The included bracket and quick-snap system are designed for windows 22 to 36 inches wide with at least 13.75 inches of opening height. The unit weighs 56.88 pounds and measures 21.97 inches long, 19.17 inches wide, and 13.46 inches high according to the product information. Once mounted, the openable window is a practical advantage, but the bracket still needs to be installed securely.
The drawback is that this is a window solution, not a flexible room-to-room appliance. It beats the portable models for noise and floor space, but it loses to the BLACK+DECKER BPACT14WT if you rent a place where window installation is restricted. If quiet sleep, a clearer window opening, and app control matter most, this is the most refined cooling design in the group. For more window-specific comparisons, see how different window installations affect room comfort.
3. GE 5, 000 BTU Window AC: Best for Small Rooms
Pros
- Sized for rooms up to 150 square feet
- Simple mechanical controls
- Two cooling modes and two fan speeds
- Washable filter
- Auto restart after power outages
Cons
- No app or voice control
- Not suitable for large rooms
- Louder than the Midea U
Best for: a bedroom, home office, dorm room, or other space up to 150 square feet.
The GE 5, 000 BTU Window AC is refreshingly narrow in purpose. It is made for small rooms, and its simple dials make it possible to adjust cooling without an app, account, or wireless setup. For a bedroom or office where the door stays closed, matching the capacity to the room is more sensible than installing an oversized unit.
GE lists two cooling modes, two fan speeds, and 10 temperature settings. Low mode is rated at 52 dBA and high mode at 56 dBA, so it is not silent, but it avoids the digital beeps that some people dislike at night. The unit draws 440 watts, includes a washable reusable filter, and can restart automatically after a power outage.
The compact chassis measures approximately 16.4 inches wide, 13.4 inches deep, and 12.6 inches high. Its 36.5-pound weight is much easier to handle than the larger portable units. The included EZ Mount kit and foam insulation are intended for double-hung windows from 27.125 to 36 inches wide, with a minimum 13.375-inch height.
Its limitation is exactly what makes it useful: 5, 000 BTU is not a solution for an open-plan living area or a sun-baked large bedroom. The Midea U is far quieter and more capable, but it also demands a different installation and room size. Pick the GE when you want straightforward cooling in a small space and would rather turn a dial than manage a connected appliance.
4. DREO 515S: Best Quiet Portable
Pros
- Listed noise level of 45 dB
- Automatic drainage in humidity below 90 percent
- App, remote, and voice controls
- Cooling, fan, and dry modes
- Temperature range from 61 to 86 degrees Fahrenheit
Cons
- Lower SACC capacity than its ASHRAE headline
- Still weighs 62.92 pounds
- Drain hose may be needed in very humid conditions
Best for: a bedroom or work space where quiet smart cooling matters.
The DREO 515S focuses on the parts of portable AC ownership that usually irritate people: compressor noise, water removal, and awkward controls. DREO lists a 45 dB noise level, making this one of the quieter portable options on paper. Its drainage-free system uses sensors, an algorithm, and a pump to evaporate excess water in environments below 90 percent humidity.
The unit is rated at 12, 000 BTU ASHRAE and 8, 000 BTU SACC. That distinction matters when comparing it with the 14, 000 BTU BLACK+DECKER or the 12, 000 BTU SACC ZAFRO. The 515S is better understood as a strong portable unit for a bedroom or moderate room, not a guaranteed whole-floor cooler. It can set temperatures from 61 to 86 degrees Fahrenheit.
DREO includes cooling, fan, and dry modes, with three functions within each mode. Smart control works through the DREO app, Siri, Amazon Alexa, and Google Home. The product information lists dimensions of 14.37 by 17.32 by 28.13 inches and a weight of 62.92 pounds. Those dimensions are fairly tall, so check the path from storage to the window before buying.
The real compromise is capacity. The DREO 318S is smaller and better suited to compact rooms, while the ZAFRO has a dual-hose layout and stronger SACC rating for fast room-wide cooling. The DREO 515S makes more sense when sleep noise and automated drainage are priorities. Skip it if you need to cool a large, poorly insulated room during extreme heat.
5. Midea 12, 000 BTU Heat: Best with Heat
Pros
- Cooling and supplemental heat in one window unit
- Five modes and three fan speeds
- Wi-Fi, remote, and voice control
- Listed noise as low as 45 dBA
- Washable front filter
Cons
- Heat pump does not operate below 41 degrees Fahrenheit
- Requires a large window opening
- Permanent window installation limits flexibility
Best for: a large room that needs cooling in summer and supplemental heat in cooler weather.
The Midea 12, 000 BTU Heat is the most practical four-season option here because it adds supplemental heat without turning into a complicated home climate system. It is designed for rooms up to 550 square feet, with cooling, dehumidification, and heat available from the same window installation. The important qualifier is that its heat pump will not operate when the outside temperature is below 41 degrees Fahrenheit.
Midea lists five modes, three fan speeds, a 24-hour timer, an ECO setting, and a swing function for directing air up and down. The unit uses 12, 000 BTU cooling capacity, operates on 115 volts, and has a listed CEER of 13.3. A washable front filter and automatic shutoff help keep routine operation manageable.
It is also a connected appliance. The control panel and remote handle normal adjustments, while the Midea SmartHome app extends control to a smartphone or smartwatch. Alexa and Google Assistant support voice commands. The unit measures about 19.41 inches wide, 22.17 inches deep, and 13.9 inches high, and it fits double-hung windows from 24 to 38.5 inches wide with a 14.5-inch vertical opening.
The weakness is seasonal, not cosmetic. This is supplemental heat, and it cannot replace a dedicated heating system in freezing weather. The Midea U is quieter and more distinctive for summer-only cooling, while the BLACK+DECKER portable heat model can move between rooms. Choose the Midea when one properly installed window unit can serve a large room through changing seasons.
6. ZAFRO 16, 000 BTU Inverter: Best Dual-Hose Portable
Pros
- Dual-hose design
- Inverter compressor
- Listed noise as low as 42 dB
- Six modes and four-way oscillation
- Up to 72 hours of drainage-free cooling in stated conditions
Cons
- Large portable chassis
- Dual-hose installation takes more room at the window
- Capacity labels require careful comparison
Best for: someone who wants portable cooling with strong airflow and a dual-hose setup.
The ZAFRO 16, 000 BTU Inverter is built around a more serious portable cooling architecture than a basic single-hose unit. Its dual-hose system brings in and exhausts air separately, which can reduce the negative pressure that lets warm outdoor air seep back into a room. The inverter compressor also adjusts its frequency instead of constantly switching between full output and off.
ZAFRO lists 16, 000 BTU with a 12, 000 BTU SACC rating and airflow of 500 cubic meters per hour. Those are the figures to compare with other portable models, since headline ASHRAE numbers alone do not describe practical cooling output. An Extra mode locks the temperature at 61 degrees Fahrenheit and runs at full power for fast relief.
The unit includes Cool, Dry, Fan, Sleep, Extra, and Eco modes. Four-way oscillation moves air vertically and horizontally, while the app and remote provide scheduling and adjustments. ZAFRO lists operation as low as 42 decibels, a 24-hour timer, filter reminders, power-off memory, and dimensions of 14.25 by 16.5 by 27.2 inches. It weighs 56 pounds, which is lighter than several competing portable models.
The catch is physical complexity. Two hoses need a suitable window arrangement, and the machine still occupies floor space even though its 56-pound weight is reasonable for the category. The DREO 515S is a better fit for a quiet bedroom if drainage simplicity is the priority, but the ZAFRO is the more convincing choice for rapid, even cooling across a larger room. Its self-evaporating system is listed for up to 72 hours below 90 percent humidity, with a drain hose for more extreme conditions.
7. Whynter ARC-14S: Best Established Design
Pros
- Dual-hose portable configuration
- Intended for spaces up to 500 square feet
- Built-in dehumidifier
- Three fan speeds
- Carbon filter and washable pre-filter included
Cons
- Tall and heavy at 73 pounds
- Older physical design
- Louder than the quietest models here
Best for: a large room where dual-hose cooling and dehumidification matter more than compact size.
The Whynter ARC-14S is a straightforward dual-hose portable AC with a strong emphasis on room coverage and moisture control. It is rated at 14, 000 BTU and intended for spaces up to 500 square feet. Unlike many newer smart models, it does not try to make app features the center of the experience. The appeal is the cooling layout, thermostatic control, and built-in dehumidifier.
Its three modes are cool, dehumidify, and fan, with three fan speeds. The thermostat range runs from 61 to 89 degrees Fahrenheit. Whynter lists a dehumidifying capacity of 71 pints per day, automatic condensate drainage in most environments, and airflow of 430 cubic meters per hour, or 253 CFM.
This is a substantial machine. It measures 19 inches deep, 16 inches wide, and 35.5 inches high, and weighs 73 pounds. The package includes an extendable intake and exhaust hose, a window kit, an activated carbon filter, a washable pre-filter, and a storage bag. The hose extends up to 60 inches, which helps with placement but also adds to the installation footprint.
The Whynter's main weakness is its size and age compared with the ZAFRO. Its low-speed noise is listed at 51 dBA, while the ZAFRO claims 42 dB and adds inverter operation. The Whynter is the better pick for someone who values a dual-hose arrangement, substantial moisture removal, and a conventional control scheme. It is not the one to choose for a narrow bedroom or frequent stair carrying.
8. BLACK+DECKER 14, 000 BTU Heat: Best Portable Heat Pump
Pros
- Cooling, heat, fan, and dehumidifier modes
- 10, 000 BTU heat capacity
- Wi-Fi and voice control
- Follow Me remote
- Window kit included
Cons
- Single-hose portable design
- Large floor footprint
- Heating and cooling capacity are listed separately
Best for: a renter who wants portable cooling and supplemental heat from one machine.
The BLACK+DECKER 14, 000 BTU Heat takes the familiar portable layout and adds a meaningful second season. It provides 14, 000 BTU ASHRAE cooling, 10, 200 BTU SACC cooling, and 10, 000 BTU of heat. Fan and dehumidifier modes round out the four-in-one design, making it more useful than a cooling-only unit when the room changes throughout the year.
Smart control works through the mobile app, Amazon Alexa, and Google Assistant. The Follow Me remote can serve as a thermostat, which helps when the unit is positioned near a window and the occupied part of the room is several feet away. The included window kit is aimed at making portable installation accessible without permanent changes to the wall.
The product lists a portable size of 16.5 by 14.06 by 27.09 inches. Product information lists a 35-pound weight, although the dimensions and capacity indicate a full-size portable appliance, so buyers should plan for a stable floor location and adequate exhaust clearance. The heating function is best considered supplemental rather than a replacement for a central or dedicated heating system.
The single-hose layout is its biggest limitation. The ZAFRO and Whynter dual-hose units are better engineered for maintaining room pressure during heavy cooling, and the Midea window heat unit avoids floor clutter altogether. Pick this BLACK+DECKER when portability and four-mode flexibility matter more than the most efficient exhaust design.
9. DREO 318S: Best Compact Smart Portable
Pros
- Sized for smaller rooms
- Listed noise level of 45 dB
- Smart app and voice control
- Cooling, fan, and dry modes
- Drainage-free operation below 90 percent humidity
Cons
- 5, 000 BTU SACC capacity limits room size
- Drain hose needed above 90 percent humidity
- Still weighs 55 pounds
Best for: a small bedroom or office that needs smart portable cooling.
The DREO 318S is the smaller, more focused sibling to the 515S. It carries an 8, 000 BTU ASHRAE rating and a 5, 000 BTU SACC rating, which makes it appropriate for a compact room rather than a large open living space. The lower capacity helps define where it belongs: close cooling for a bedroom, office, or similarly contained area.
DREO lists a 45 dB noise level and the same general three-in-one approach found in the larger model. Cool, Fan, and Dry modes are available, and the unit can set temperatures from 61 to 86 degrees Fahrenheit. The drainage-free system evaporates moisture automatically below 90 percent humidity, while a drain hose is required in more humid conditions.
The smart features are unusually complete for a compact portable unit. The DREO app can monitor temperature and humidity and customize a sleep curve, while Siri, Amazon Alexa, and Google Home provide voice control. It measures 15.16 inches long, 13.98 inches wide, and 24.8 inches high, and weighs 55 pounds.
Its weakness is headroom. The DREO 515S is a stronger choice for a larger bedroom because its SACC rating is 8, 000 BTU, while the BLACK+DECKER BPACT14WT is better when the room approaches the upper end of portable cooling needs. Choose the 318S when a smaller footprint and smart bedroom control are more important than raw capacity. Readers focused on especially compact spaces can also compare how smaller portable units handle tight rooms.
10. HUMHOLD 14, 000 BTU: Best Airflow Coverage
Pros
- 14, 000 BTU ASHRAE cooling
- Auto-swing airflow from 30 to 85 degrees
- Cool, dry, and fan modes
- 24-hour timer
- Wheels and hidden handles
Cons
- No app or voice control listed
- Requires continuous draining in some conditions
- Heavy 65-pound body
Best for: a large room where broad airflow and simple remote control matter.
The HUMHOLD 14, 000 BTU puts its effort into coverage and basic convenience. It is rated at 14, 000 BTU ASHRAE and 10, 000 BTU SACC, with stated coverage from 550 to 700 square feet. Those figures place it alongside the largest portable units here, though real performance will depend on the room envelope and the exhaust installation.
It offers Cool, Dry, and Fan modes, with a cooling temperature range from 61 to 90 degrees Fahrenheit. The 30 to 85 degree auto-swing range spreads air across more of the room instead of sending one narrow stream in a fixed direction. A 24-hour timer, sleep mode, and three fan speeds cover the practical controls, while the remote is listed with a range of up to 28 feet.
HUMHOLD lists a noise level below 48 dB in sleep mode. Its self-evaporating system handles normal use, but the product notes that continuous draining is needed in a room around 85 percent humidity or when using Dry mode. The machine measures 13 inches wide, 16 inches deep, and 27 inches high, weighs 65 pounds, and uses four wheels plus hidden side handles to help with movement.
The lack of listed app or voice control makes it less connected than the BLACK+DECKER and DREO models. It also lacks the dual-hose design found in the ZAFRO and Whynter. Still, the HUMHOLD is a sensible choice when wide airflow, a long timer, and uncomplicated remote operation matter more than smart-home integration.
How to choose best ac units
The right air conditioner starts with the room and the window, not the biggest number printed on the box.
Cooling capacity
BTU ratings describe cooling capacity, but portable AC listings often show both ASHRAE and SACC figures. SACC is the more useful comparison for portable models because it accounts more closely for the way a portable unit operates in a room. The GE's 5, 000 BTU rating suits up to 150 square feet, while the larger models are intended for substantially bigger rooms.
Oversizing is not automatically better. A unit that cools the air quickly but does not remove enough moisture can leave a room cold and clammy. Match the capacity to room size, sunlight, insulation, ceiling height, and whether doors remain open.
Window and exhaust design
Window units transfer heat through the wall opening, while portable models need an exhaust hose. Single-hose designs are easier to position, but they can pull replacement air into the room. Dual-hose models such as the ZAFRO and Whynter separate intake and exhaust paths.
Measure the window before choosing. The Midea U fits windows 22 to 36 inches wide, the GE requires 27.125 to 36 inches, and the Midea heat model requires 24 to 38.5 inches. A capable unit is still the wrong purchase if the bracket or panel cannot seal the opening.
The best portable AC is often the one whose window kit seals tightly, not the one with the largest headline BTU number.
Noise
Noise matters most in bedrooms, offices, and rooms where the unit runs for long periods. The Midea U lists operation as low as 32 dBA, while the DREO models list 45 dB and the ZAFRO lists 42 dB. These figures come from product specifications and are not directly interchangeable measurements, so treat them as useful guidance rather than a guarantee.
Compressor design, fan speed, vibration, and the distance between the machine and your bed all affect perceived noise. A window design that places more hardware outside the room can have a major practical advantage.
Moisture handling
Dehumidification is part of what makes an air conditioner feel effective. Self-evaporating systems can reduce manual draining in normal conditions, but high humidity may still require a hose. The DREO models state drainage-free operation below 90 percent humidity, the ZAFRO lists up to 72 hours below that threshold, and HUMHOLD specifies continuous draining for some humid conditions and Dry mode use.
Look for a washable filter and accessible drainage points. If the room is consistently humid, a unit with a clearly usable drain arrangement may be less frustrating than one that only promises automatic evaporation.
Smart controls and seasonal functions
Wi-Fi control is useful when you want to cool a room before arriving, change the temperature from bed, or schedule operation. BLACK+DECKER, Midea, DREO, and ZAFRO include connected controls in their listed features. The GE and HUMHOLD favor direct controls and a remote instead.
Heat adds flexibility, but the details matter. The Midea heat model's heat pump does not operate below 41 degrees Fahrenheit, and the BLACK+DECKER heat unit should be treated as supplemental heating. For a broader look at the portable category, compare the practical trade-offs between portable cooling designs.
Frequently asked questions
Are portable air conditioners better than window units?
Portable units can move between rooms and usually need less permanent installation. Window units generally use space more efficiently and can be quieter because more of the heat-producing hardware sits outside. The better choice depends on window access, installation rules, and whether portability matters.
What does SACC mean on a portable air conditioner?
SACC is a portable air conditioner cooling measure intended to reflect performance under more realistic operating conditions. It is often lower than the ASHRAE headline number. Compare SACC figures when choosing between portable models rather than relying only on the larger ASHRAE rating.
Do portable air conditioners need to be drained?
Some portable ACs automatically evaporate condensation during normal cooling. High humidity, Dry mode, or unusually wet conditions can still require a drain hose. The DREO models specify drainage-free operation below 90 percent humidity, while HUMHOLD notes continuous draining in some humid use.
Is a dual-hose portable AC better?
A dual-hose design uses one hose for intake and another for exhaust. That can reduce the amount of warm replacement air pulled into the room during cooling. It usually makes the window setup larger and less flexible, so it is most useful when sustained cooling performance matters more than easy repositioning.
What size air conditioner is suitable for a bedroom?
The right size depends on the bedroom's area, sunlight, insulation, and ceiling height. The GE 5, 000 BTU unit is specifically listed for rooms up to 150 square feet, while the DREO 318S has a 5, 000 BTU SACC rating for smaller portable cooling needs. Avoid choosing solely by the room-size claim on the product page.
Can an air conditioner also heat a room?
Some models include heating, but the capability may be supplemental. The Midea 12, 000 BTU Heat uses a heat pump that does not operate below 41 degrees Fahrenheit. The BLACK+DECKER heat model lists 10, 000 BTU of heat, but it is still a portable appliance rather than a replacement for a full heating system.
The bottom line
The Best best ac units pick is the BLACK+DECKER BPACT14WT because it combines strong portable cooling, a Follow Me remote, Wi-Fi, voice control, fan operation, and dehumidification in one flexible machine. Its single-hose design and heavy body are real drawbacks, but the feature balance is unusually useful for renters and rooms without a suitable permanent window installation.
For a window, the Midea U 12, 000 BTU is the stronger choice, especially when quiet operation and a partially openable window matter. Choose the GE 5, 000 BTU Window AC for a small room, the DREO 515S for quieter smart portable cooling, or the Midea 12, 000 BTU Heat when supplemental heat matters as much as summer cooling.
If you are undecided, first measure the window and room, then choose the quietest design that has enough SACC capacity for the space.
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