how to size an air conditioner for a room

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How To Size An Air Conditioner For A Room?

As a rule of thumb, an air conditioner needs 20 Btu for each square foot of living space. But other considerations, such as the ceiling height and the size of your windows and doorways, might call for more cooling power. To measure your room, multiply the length by the width.May 30, 2021

How do I calculate what size air conditioner I need?

To calculate the size of the air conditioner you need for a room, first, multiply the length of the room with its width. Then multiply it with 25 BTU to get the ample cooling for the room under different weather conditions. For example, if the room is 15 feet long and 12 feet wide, it comes to 180 square feet.

How many BTU do I need for a 12×12 room?

Size and Ceiling Height

Area To Be Cooled (square feet)	Capacity Needed (BTUs per hour)
100 to 150	5,000
150 to 250	6,000
250 to 300	7,000
300 to 350	8,000

How big of a room will 12000 BTU air conditioner cool?

Budget air conditioners range from 5,000 BTU, which can handle about 150 square feet, to 12,000 BTU, enough to cover about 550 square feet.

What size room will a 2.5 KW air conditioner cool?

Room size

Room size	Example	Approx. capacity
Small (up to 20m²)	Bedroom, study, small kitchen	2–2.5kW
Medium (20–40m²)	Bedroom with ensuite, small lounge	2.5–5kW
Large (40–60m²)	Large bedroom, mid-sized lounge, large kitchen	4–6kW
Extra large (60+m²)	Open-plan areas, large lounges	5–9kW

What size air conditioner do I need for a 12×15 room?

That means 12×15=180 square feet. Take the 180 sq. ft. times 25 BTU per square foot and you get the minimum BTU air conditioner you should buy.

What size air conditioner do I need for a 2000 square foot home?

If your home is 2000 square feet, you can calculate your HVAC needs the same as you would for a 1600 square foot home. Assuming one ton of cooling capacity can cool 400 square feet of your home, you’ll need about 5.0 tons of air conditioning capacity. Multiply this by 12,000 BTUs, and you’ll get 60,000 BTUs.

What size room will a 5000 BTU air conditioner cool?

100 to 150 sq ft

“5000 BTU air conditioner can cool a 100 to 150 sq ft room.” Energy Star guidelines for 5000 BTU AC room sizing also recommends that you: Increase capacity for a room with high sun exposure; +10% cooling output. That would reduce the 5000 BTU AC room size to 90-135 sq ft.

Is 8000 BTU enough for a bedroom?

Recommended BTU By Room Size

If you are looking for an air conditioner for a room measuring say 10′ x 15′ (150 square feet), the recommended BTU range is up to 5400. … Once you get into 340 and 400 square feet per room, you’d need an 8,000 or 9,000 BTU air conditioner, respectively.

What size air conditioner do I need for a 3000 square foot house?

“…an air conditioner generally needs 20 BTU for each square foot of living space.” We need to convert BTU to tonnage.
…
Tonnage Table.

Area (Square Feet):	BTU	Tonnage
2,700 sq ft	54,000 BTU	4.5 Tons
3,000 sq ft	60,000 BTU	5 Tons
3,300 sq ft	66,000 BTU	5.5 Tons
3,600 sq ft	72,000 BTU	6 Tons

What size room will 15000 Btu cool?

about 875 sq. ft.

Air conditioners rated at 15,000 Btu should be enough to cool most rooms up to about 875 sq. ft.

What size room will a 10000 BTU air conditioner cool?

300 sq. ft.

10,000 BTUs will cover 300 sq. ft. (2,400 cubic feet)

What size room will a 9000 BTU air conditioner cool?

350 – 400 sq. feet: 9,000 BTUs. 400 – 450 sq. feet: 10,000 BTUs.

What is the difference between 2.5 KW and 3.5 KW?

A 2.5kW system is suitable for a bedroom ideally and this would mean that an area up to 18m2 would be sufficient. … A 3.5kW system is ideal for a large bedroom that is more of a master bedroom with an ensuite.

What size room will a 3.5 KW air conditioner cool?

For a room 20m2 to 30m2, a 3.5kW unit should cool the room; For a room 30m2 to 45m2, a 5-6kW unit should cool the room; and. For a room 45m2 to 65m2, a 7-8kW unit should cool the room.

What size room will a 1.7 KW air conditioner cool?

The size of your air conditioner depends on the size of the room to be cooled. Generally, you will need about 1.25-1.7 kilowatts of power per 10 sqm if the ceiling height is standard. To work out what size you need multiply the width by length of the room to get you floor space.

How many BTUs is 1hp aircon?

9,000 BTU

When choosing an air conditioner, usually a 1 HP (horse power) equipment is able to remove 9,000 BTU/hr of heat. With better technology, some machines are able to remove 10,000 BTU/hr of heat with the same capacity. The higher the listed BTU/hr, the greater the cooling capacity.

What size AC do I need for 1200 sq ft?

STEP 1: Determine how many BTUs of heating and tons of AC you need

House Square Footage	BTUs Needed
500 – 700	14,000
700 – 1,000	18,000
1,000 – 1,200	21,000
1,200 – 1,400	23,000

How many square feet is a 12×12 room?

144 square feet
How many square feet is a 12×12 room? The square footage of a room 12 feet wide by 12 feet long is 144 square feet. Find the square footage by multiplying the width (12 ft) by the length (12 ft).

How many sq ft will a 4 ton AC unit cool?

	ZONE 1	ZONE 3
3 Tons	1501 – 1800 sf	1601 – 1900 sf
3.5 Tons	1801 – 2100 sf	1901 – 2200 sf
4 Tons	2101 – 2400 sf	2201 – 2600 sf
5 Tons	2401 – 3000 sf	2601 – 3200 sf

How many square feet does a 2 ton AC unit cover?

Units that are 2 tons can cool off 901-1200 square feet spaces. Units that are 2.5 tons can cool off 1201-1500 square feet, etc. This pattern continues up to units of 5 tons that cool off 2401-3000 square feet, with every half ton increase adding about an additional 300 square feet.

How much does an air conditioner cost for a 2000 sq ft home?

Installing a central air conditioner into a 2000 square ft. home with an existing forced air furnace heating system (that has all ductwork installed properly) would cost between $3,000 to $4,000.

What size room will 7000 BTU?

BTU Chart Based on Room Size
150 sq. ft.	5,000 BTU’s	700 sq. ft.
250 sq. ft.	6,000 BTU’s	1,000 sq. ft.
300 sq. ft.	7,000 BTU’s	1,200 sq. ft.
350 sq. ft.	8,000 BTU’s	1,400 sq. ft.

What size room will a 6000 BTU air conditioner cool?

In general, a 5,000 to 6,000 BTU air conditioner can cool between 100 and 300 square feet. Seven thousand to 8,200 BTU units are adequate for cooling 250 to 550 square feet, while 9,800 to 12,500 BTU models cool up to 950 square feet.

What is the difference between 5000 BTU and 6000 BTU?

The difference between a 5000 BTU vs 6000 BTU air conditioner is that the 5000 BTU unit covers 100 to 150 square feet while a 6000 BTU unit will cover 150 to 250 square feet. Therefore, 6000 BTU air conditioners are suitable for larger rooms than the 5000 BTUs.

How many rooms can a 8000 BTU cool?

8,000 BTU air conditioners can cool down rooms from 250 sq ft (about 16×16) to 400 sq ft (20×20).

Is 12000 Btu too much?

The most common window air conditioning units come in cooling capacities ranging from 5,000 to 12,000 Btu. A 12,000 Btu air conditioner can cool between 450 and 550 square feet of floor space. A 12,000 Btu unit could cool a room 25 feet long by 20 feet wide that has 500 square feet of floor area.

Is it cheaper to run a window air conditioner or central air?

A window unit comes in at a way cheaper price of around $300-$1,500 with monthly running costs of about $30-$80 depending on its usage. However, if you’re planning to cool more than 5 rooms, then one central air conditioner will be cheaper in the long run.

What happens if you oversize an air conditioner?

An oversized HVAC unit can make your home’s inside temperature uncomfortable. An HVAC system with excess capacity can heat or cool your home faster, but that speed often results in a couple of other issues. … As a result, you could end up with a number of hot or cold spots throughout your home.

Is a 2 ton AC big enough?

Pro Tip: as a rule of thumb, the maximum AC unit size you need to install should not be more than 15% more than the BTU’s you need to cool your house. This means that if your house requires a 24,000 BTU unit (2 tons), you should not install one that is larger than 30,000 BTU’s (3 tons) to maintain energy efficiency.

What size AC do I need for 1500 square feet?

Therefore, if your home is 1,500 square feet, your air conditioning unit should be 3.5 to four tons.

How many square feet will a 24000 BTU AC cool?

A 24,000 BTU air conditioner would work best in a room between 1,400 and 1,500 square feet.

Can Window AC cool entire house?

Window air conditioners are designed to cool only a single room. It is very difficult for such AC to cool an entire house. At most you can cool two adjacently connected tiny rooms with a single window AC, but there will be uneven cooling.

How many square feet will 18000 Btu heat?

1,000 square foot

Calculating the number of BTUs needed to heat an area

For example, a 300 square foot room typically requires 7,000 BTUs to maintain a comfortable temperature, while a 1,000 square foot room requires 18,000 BTUs.