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10,000 BTU Air Conditioner

How big a room does a 10,000 BTU AC cool? Check your own room in one step and compare 10,000 BTU window and portable units by their real cooling.

Will 10,000 BTU cool my room?
ft
ft
432 sq ft
Yes, 10,000 BTU fits this room

Assumes an 8 ft ceiling and up to two people. For other cases, use the BTU calculator.

A 10,000 BTU air conditioner cools400–450sq ft37–42 m² · about 18 × 24 ft · 8 ft ceiling, normal sun
Tons
0.83
Kilowatts
2.93
Very sunny room
−10% area

Portable unit? A portable boxed as 10,000 BTU (ASHRAE) usually delivers less. For 10,000 BTU of real cooling, look for a SACC rating of 10,000 or more.

100% private: the math runs in your browser and nothing is sent anywhere. Estimates for one room or open space up to 2,500 sq ft.

10,000 BTU models

10,000 BTU air conditioners

Compare all sizes

Window units rated exactly 10,000 BTU, and portables boxed at 10,000 BTU or delivering about 10,000 BTU of real cooling (SACC). Specs as stated by each manufacturer, checked October 2026. As an Amazon Associate, ComfortSizer earns from qualifying purchases.

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How big a room does a 10,000 BTU air conditioner cool?

According to the ENERGY STAR sizing chart, 10,000 BTU is the recommended capacity for 400 to 450 square feet (about 37 to 42 m²) with an 8 ft ceiling and normal sun. That is roughly a 18 × 24 ft room.

  • Very sunny room: add 10% to the load, so 10,000 BTU covers about 10% less floor area.
  • Shaded room: take 10% off the load.
  • More than two people: add 600 BTU for each extra person who regularly uses the room.
  • Kitchen: add 4,000 BTU.

Window vs portable at 10,000 BTU

A window unit's 10,000 BTU rating is its real cooling. Portables are different: the big number on the box is the ASHRAE rating, while the DOE's SACC figure, which accounts for heat leaking back through the hose and casing, is usually a few thousand BTU lower. In our list, portables boxed at 14,000 BTU deliver about 10,000 BTU of real cooling.

10,000 BTU in tons and kilowatts

10,000 BTU per hour is 0.83 tons of cooling (1 ton = 12,000 BTU) and about 2.93 kW.

ModelTypeBox BTUReal cooling
Midea U MAW10V1UWTWindow10,00010,000Amazon
TCL H10W35WWindow10,00010,000Amazon
BLACK+DECKER BPACT10WTPortable10,0005,550 SACCAmazon
Midea MAP07S1AWT-APortable10,0007,100 SACCAmazon
DREO 516SPortable14,00010,000 SACCAmazon
BLACK+DECKER BPACT14WTPortable14,00010,200 SACCAmazon
FAQ

Questions

How many square feet will a 10,000 BTU air conditioner cool?
400 to 450 square feet, according to the ENERGY STAR chart, for a room with an 8 ft ceiling and normal sun.
Is 10,000 BTU enough for a 18 x 24 room?
A 18 x 24 ft room is 432 sq ft, which falls inside the 400–450 sq ft range for 10,000 BTU. If the room is very sunny or regularly used by more than two people, check the next size up.
How many tons is 10,000 BTU?
0.83 tons. One ton of cooling is 12,000 BTU per hour.
Is a 10,000 BTU portable air conditioner as strong as a 10,000 BTU window unit?
Usually not. Portables are boxed with their ASHRAE rating; their real cooling (SACC) is typically a few thousand BTU lower. Compare the SACC figure with the window unit's rating.